| Prof. Nderitu John Huria Publications |
| 1 | 2018 | James Wanjohi Muthomi,Geoffrey Ongoya Wafula, John Huria Nderitu, George Ndiema Chemining’wa (2018). Integration Of Seed Dressing, Bio-pesticides And Intercropping To Reduce Pesticide Usein Snap Bean Production( 2018). International
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| 2 | 2018 | Mwinzi, D. K.; Kioko, E. N.; Nderitu, J. H.; Kimenju, J. W. (2018)Butterfly Diversity And Abundance In Ngango Forest Edge And Sorrounding Farmlands In Taita-Taveta County, Kenya
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| 3 | 2018 | Oliver Otieno,; Muthomi, J; Nderitu, J. HMechanism Contributing To Poor Crop Emergence And Establishment Of Common Beans Afer Lablab Incorporation. Mid-year Workshop, Kisumu, Kenya
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| 4 | 2018 | Nderitu, J. H.; Mutyambai, D.; Muo Kasina; Mueke, A. (2018) Impact Of False Codling Moth (FCM) In Horticulture In Kenya. Workshop On Management Of False Codling Moth, Machakos, Kenya
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| 5 | 2017 | A Study Of The African White Rice Stem Borer (Maliarpha Separatella Rag.) Population Density Fluctuations At Mwea Irrigation Scheme In Central Kenya
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| 6 | 2017 | OPPORTUNITIES TO PROMOTE A VIBRANT RESEARCH CULTURE IN UNIVERSITIES IN EAST AFRICA
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| 7 | 2017 | A Life Of Struggles
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| 8 | 2017 | Efficacy Of Potassium Salts Of Fatty Acids In The Management Of Thrips And Whitefly On Snap Beans
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| 9 | 2017 | Funded Research And Grants Proposal Writing. (2017. )Review Of Current Trends In Research In East Africa; Their Implications For The Region And For Higher Education And Learning. Programme For The Pedagogy Skills, Workshop For Academic Staff At Moun
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| 10 | 2016 | Assessment Of Yield Loss Caused By The African White Rice Stem Borer (Maliarpha Separatella Rag (Lepidoptera: Pyralidae) At Mwea Irrigation Scheme, Kirinyaga County, Kenya
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| 11 | 2016 | Effectiveness And Profitability Of Insecticide Formulations Used For Managing Snap Bean Pests
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| 12 | 2016 | Role Of AIVs In Climate Smart Agriculture
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| 13 | 2016 | 43. Nderitu, J. H. (2016). Introduction To Organic Production: Principles And Benefits. Training Workshop On Organic Agriculture, University Of Mauritius, Reduit, 1-07 Dec 2016
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| 14 | 2016 | 44. Organic Crop Production Systems - Process Of Conversion. (2016) Training Workshop On Organic Agriculture, University Of Mauritius, Reduit, 1-07 Dec 2016
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| 15 | 2016 | 45. Organic Crop Production Practices: Crop Rotation, Multiple Cropping, Inter-planting, Companion Planting, Diversification Of Plant Species, Buffer Zoning. (2016) Training Workshop On Organic Agriculture, University Of Mauritius, Reduit, 1-07 Dec 2016
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| 16 | 2016 | 46. Organic Crop Production- Nursery And Field Management/ Bio-intensive Tillage Practices /pre And Post Harvest Handling Of Organic Produce. (2016) Training Workshop On Organic Agriculture, University Of Mauritius, Reduit, 1-07 Dec 2016
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| 17 | 2016 | 47. Management Of Pests, Diseases & Weeds.(2016) Training Workshop On Organic Agriculture, University Of Mauritius, Reduit, 1-07 Dec 2016
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| 18 | 2016 | 48. Organic Certification: Standards, Record Keeping, Certification Process, Target Market, Logo/brand. (2016) Training Workshop On Organic Agriculture, University Of Mauritius, Reduit, 1-07 Dec 2016
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| 19 | 2016 | 49. Organic Certification: Conversion Process. Training Workshop On Organic Agriculture, University Of Mauritius, Reduit, 1-07 Dec 2016
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| 20 | 2016 | Nderitu, J. H. 2016. Principles Organic Agriculture
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| 21 | 2015 | Influence Of Cropping And Irrigation Systems On Population Fluctuation Of The African White Rice Stem Borer (Maliarpha Separatella Rag) And Damage On Rice. Journal Of Entomology, 2015
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| 22 | 2015 | Alogit Analysis Of Farmer Knowledge On Rice Blast Disease Pyricularia Grisea [Cook, Sacc] At Mwea Irrigation Scheme, Kirinyaga County, Central Province, Kenya
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| 23 | 2015 | The Potato Sector In Kenya – Key Insights, Challenges, Opportunities And Lessons Learned Potato Dialogue Platform 14th To 17th September, 2015,Giz, Bonn, Germany
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| 24 | 2015 | Assessment Of Yield Loss Caused By The African White Rice Stem Borer (Maliarpha Separatella Rag (Lepidoptera: Pyralidae) At Mwea Irrigation Scheme, Kirinyaga County, Kenya. Journal Of Entomology, 2015
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| 25 | 2015 | Prolonging The Shelf-life Of Seed Potato Tubers At Farm Level: Cold Storage Or Diffused Light Store
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| 26 | 2015 | Fruits Of Our Toil
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| 27 | 2015 | Potato Power Point Presentation On Potato
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| 28 | 2015 | Diversity And Abundance Of Native Bees Foraging On Hedgerow Plants In The Kakamega Farmlands,
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| 29 | 2015 | EXPLORING OPPORTUNITIES OF INFORMATION AND COMMUNICATION TECHNOLOGIES (ICTS) IN HIGHER AGRICULTURAL EDUCATION ENROLMENT IN KENYA
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| 30 | 2015 | Management Bean Pests
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| 31 | 2014 | Feasibility Of Low-Cost Seed Potato Storage In Kenya: The Case Of Diffused Light Storage In Nyandarua County.
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| 32 | 2014 | Yield Performance Of Potato Seed Tubers After Storage In A Diffuse Light Store (DLS). Journal Of Agricultural Sciences. Volume 6(1): 21-28
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| 33 | 2014 | Management Of Thrips In French Bean By Integrating Biological And Synthetic Pesticides In Conventional Spray Regimes
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| 34 | 2014 | Ecological Approaches: Entomological Diversity Including Pollinators
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| 35 | 2014 | Status, Challenges And Marketing Opportunities For Canning Navy Bean In Kenya
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| 36 | 2014 | Bernard Ouma, James Muthomi, John Nderitu, John H. Nderitu, Faith Torotich (2014). Pest Management Practices And Compliance To Market Stawndards Among French Bean Farmers. 14th Conference On HAK, Nairobi, 1-5th December 2014
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PEST MANAGEMENT PRACTICES AND COMPLIANCE TO MARKET STANDARDS AMONG FRENCH BEAN FARMERS
Bernard Ouma, James Muthomi, John Nderitu2 and Faith Toroitich
Department of Plant Science and Crop Protection, University of Nairobi, P. O. Box 30197-00100, Nairobi, Kenya
2. Mount Kenya University, P. O. Box 342-01000, Thika, Kenya
Abstract
The EU commission increased to 10% sampling and pesticide residue analysis of French beans and peas imported from Kenya. This resulted in a 25% dip in bean sales in January 2013. This study aimed at determining pest management strategies used by small scale French bean farmers. A survey to determine farmers’ pest management practices was done in Embu east and Mwea east district, where 32 and 38 farmers were from Embu east and Mwea east, respectively. The farmers considered French beans farming as an important source of income, and up to 50% of the farmers had been in French beans production for a period of three years and more. Most of farmers in the study area entirely relied on synthetic pesticides for pest and disease control. White fly was the major insect pest while rust was the major disease as identified by the majority of farmers. Less than 30% of the farmers were involved in the implementation of GLOBALGAP, with 3.1% of the farmers being certified. The findings showed that farmer’s pest management practices were incompatible with good agricultural practices and export market standards. There is a need to sensitize farmers on the use of alternative pest management strategies and requirements of the export market standards.
Key words: French beans, export market requirements, maximum residue levels, Global G.A.P
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| 37 | 2014 | Efficacy Of Potassium Salts Of Fatty Acides In The Management Of Thrips And Whiteflies On Snapbeans
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EFFICACY OF POTASSIUM SALTS OF FATTY ACIDS IN THE MANAGEMENT OF THRIPS AND WHITEFLIES ON SNAP BEANS
G. O. Wafula*, J. W. Muthomi, J. H. Nderitu and G. N. Chemining’wa
Department of Plant Science and Crop Protection,University of Nairobi. P. O Box 29053-00625 Kangemi, Nairobi, Kenya
Email: ongoya@gmail.com, Tel. 0723144690
Abstract
Snap bean farmers mainly rely on chemical pesticides to manage insect pests and diseases but the introduction of strict maximum residue levels (MRLs) by European markets pose a challenge to the use of pesticides. This has necessitated the search for alternative pest management options that do harmful residues on produce. Therefore, this study was carried out to determine the efficacy of potassium salts of fatty acids as alternative to synthetic chemicals in the management of snap bean pests. Field experiments were carried out in farmers’ fields in Mwea and Embu in 2013 for two cropping cycles. Potassium salts of fatty acids at 0.5%, 1% and 1.5% spray solution were applied weekly starting from three weeks after emergence (WAE) until early podding. The efficacy of the different concentrations was evaluated by assessing population of thrips, whitefly, and pest damaged pods, in addition to pod yield.. The application of potassium salts of fatty acids at 1% and 1.5% of spray solution significantly (P<0.05) reduced white fly and thrips populations by up to 61% and 69% respectively. Pod damage due to thrips was also significantly (P<0.05) reduced by up to 83% and marketable pod yield was significantly (P<0.05) increased by up to 151%. The results demonstrated that potassium salts of fatty acids are a viable alternative to synthetic chemical pesticides thereby enabling farmers to meet the strict European markets maximum residue level requirements.
Key words: Phaseolus vulgaris L., potassium salts of fatty acids, pesticide residues, market access
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| 38 | 2014 | G. O. Wafula, J. W. Muthomi, J. H. Nderitu And G. N. Chemining'wa (2014). Management Of Snapbean Pests By Integrated Seed Dressing, Foliar Sprays And Intercropping With Maize. Conference On HAK, Nairobi, 1-5th December 2014
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MANAGEMENT OF SNAP BEAN PESTS BY INTEGRATING SEED DRESSING, FOLIAR SPRAYS AND INTERCROPPING WITH MAIZE
G. O. Wafula*, J. W. Muthomi, J. H. Nderitu2 and G. N. Chemining’wa
Department of Plant Science and Crop Protection,University of Nairobi. P. O Box 29053-00625 Kangemi, Nairobi, Kenya
2. Mount Kenya University, P. O. Box 342-01000, Thika, Kenya
Email: ongoya@gmail.com, Tel. 0723144690
Abstract
Insect pests remain a major constratint in the production of snap beans and farmers mainly rely on chemical pesticides to manage the insect pests and diseases. However, the introduction of maximum residue levels (MRLs) for export vegetables by European markets pose a challenge to the use of pesticides. This study was carried out to develop sustainable options of managing snap bean pests and reducing chemical residues on snap bean produce.
Field experiments were carried out in farmers’ fields in Mwea and Embu from July 2013 to January 2014 for two planting cycles under irrigation. The integrated pest management strategies evaluated included: i) seed dressing only, ii) seed dressing followed by three neem sprays, iii) seed dressing followed by two pyrethrid sprays and one neem spray, iv) seed dressing followed by three pyrethrin sprays and intercropping snap bean with maize, v) seed dressing followed by two pyrethrin sprays plus one spray with a biological product, vi) seed dressing followed by two neem sprays plus one spray with a biological product, and vii) two pyrethrin sprays and one neem spray only. The data collected included: emergence, plant stand, nodulation, thrips population, bean stem maggot population, whitefly population, yield and pest damage. The combination of seed dressing, two pyrethrin sprays and neem applied at the vegetative stage, early flowering and early podding reduced white fly and thrips population by up to 54% and 60% respectively. Similar results were also observed on plots where seeds dressing was done before planting combined with intercropping with maize plus three pyrethrin sprays at the vegetative stage, early flowering and early podding. Seed dressing had a direct effect on the bean stem maggots that attack the seedling at a very young stage. Spraying with pyrethrin sprays had a quick knockdown effect on the population of whitefly and thrips while the maize intercrop also reduced the pest population. These options also reduced pod damage due to thrips by up to 75 and 93% and increased yield of extra-fine by up to 157 and 162% and fine pods by up to 148 and 133%. The results showed that seed dressing followed by two pesthrin sprays at the vegetative stage and early flowering stage plus a single spray with Nimbecidine at early podding, sprays and intercropping with maize were effective in managing snap bean pests. This demonstrates that integrated pest management options would be viable alternatives to chemical pesticides thereby enabling farmers meet the strict maximum chemical residue level requirements set by European consumers.
Key words: Phaseolus vulgaris L, seed dressing, bio-pesticides, intercropping, integrated pest management
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| 39 | 2014 | Effect Of Incorporating Lablab Biomass In Soils On Root Rot Disease Complex And Yield Of Beans Intercropped With Maize
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| 40 | 2014 | Susceptibility Of Geographically Isolated Populations Of The Tomato Red Spider Mite (Tetranychus Evansi To Commonly Used Acaricides On Tomato Crops In Kenya
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| 41 | 2014 | Report On NCST Seed Potato Project
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| 42 | 2014 | Enhancing Production, Postharvest Handling, Value Addition And Marketing Of Indigenous Vegetables (Cowpea, Nightshade, Pumpkin, Amaranth, Spider Plant), Mushrooms And French Beans Among Smallholder Farmers In Kenya
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| 43 | 2014 | Challenges And Opportunities In Production And Marketing Of Ware And Seed Potatoes
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| 44 | 2014 | CHALLENGES AND OPPORTUNITIES IN PRODUCTION AND MARKETING OF POTATOES
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| 45 | 2014 | Enhancing Production, Postharvest Handling, Value Addition And Marketing Of Indigenous Vegetables (Cowpea, Nightshade, Pumpkin, Amaranth, Spider Plant), Mushrooms And French Beans Among Smallholder Farmers In Kenya
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| 46 | 2013 | Competitiveness Of Smallholder Snap Bean Production In Kirinyaga County, Kenya
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| 47 | 2013 | Mass Production Of Entomopathogenic Nematodes Using Silkworm (Bombyx Mori L.) For Management Of Key Agricultural Pests
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| 48 | 2013 | Policy Implementation And Its Economic Impact On Potato Marketing Value Chain In Kenya
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Potatoes (Solanum tuberosum L.) are second in importance after maize in Kenya as food crop. It is grown mainly by small scale farmers in more than 100,000 ha country wide producing more than 1 million tonnes annually. The marketing value chain has been described as ineffective, with farmers getting far much lesser compared with other players. Recognizing this, the Government of Kenya developed laws in 2005 to streamline the chain and ensure farmers gain from the potato production. It also established some specific laws in 2008 to interpret the 2005 laws in target chain levels. This study was carried out between December 2009 and February 2010 to monitor implementation, enforcement and economic impact of legal notice no. 113 of 2008 of the Government of Kenya using formal questionnaires administered to traders and farmers in selected seven markets and regions. Information was also obtained from focused group discussions as well as stakeholder participation in a workshop. The findings show that traders and farmers are aware of the regulations but are not implementing them. Farmers had higher (97%) knowledge of regulations compared with traders (92%). The major reasons cited by farmers for not being able to implement the regulations included cartels, lack of storage facilities and information about the potato production costs and prevailing market prices at any given time. Calculations show that the contribution of potatoes to the Kenyan economy is 300% higher than what is in government records. This study provides more evidence of the effect of the legal notice on the potato marketing value chain in Kenya and policy recommendations to ensure enforcement of the regulations and streamline the potato value chain.
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| 49 | 2013 | Management Of Potato Viruses In Seed Potato Production Using Border Crops
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Field experiments were conducted over two croppi ng seasons to investigate the effectiveness of border crops in managing potato aphids and the associated viruses in seed potato production. Potato plots were surrounded with maize, sorghum and wheat borde rs. Aphid population was monitored on leaves and on yellow sticky traps. Other data collected included virus disease incidence and tuber yield. The border crops reduced aphid popula tion on leaves compared to non-bordered potato plots. More alate aphids we re caught on yellow sticky traps placed inside potato plots than on traps placed inside the border crops. In addition, virus disease incidence was reduced in all plots surrounded by the border cr ops. However, plots surrounded by border crops had reduced tuber yield, although the yield of s eed grade was increased. The results indicated that use of border crops would be beneficial in the management of virus diseases in small-holder seed potato production.
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| 50 | 2013 | Management Of Maliarpha Separatella Rag Using Effective Entomopathogenic Nematodes And Resistant Rice Cultivars. Journal Of Entomology,10: 103-1
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| 51 | 2013 | A Logit Analysis Of Farmer’ Knowledge Of African White Rice Stem Borer, Maliarpha Separatella Rag At Mwea Irrigation Scheme, Kirinyaga County, Central Province, Kenya
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| 52 | 2013 | Assessment Of Yield Loss Caused By Maliarpha Separatella Rag.on Rice At Mwea, Kirinyaga County, Kenya. Mount Kenya University Annual Research And Innovation Confer
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| 53 | 2013 | Integrating Biological, Synthetic And Botanical Pesticides On Thrips Population And Yield Of French Beans.
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| 54 | 2013 | Mat Rehabilitation Of Banana Xanthomonas Wilt Infected Orchards In Epidemic Areas Of Western Kenya. Mount Kenya University Annual Research And Innovation Confer
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| 55 | 2013 | Yield Performance Of Potato Seed Tubers After Long Storage In A Diffuse Light Store (DLS)
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| 56 | 2013 | Mugambi, I. K.1, Muthomi, J. W., Ojiem, J., Chemining’wa, G. N. And Nderitu, J. H. (2013). Effect Of Incorporating Lablab Residues On Bean Root Rot And Chafer Grub (2013. Mount Kenya University Annual Research And Innova
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| 57 | 2013 | Nderitu, J. H., Wahome, R. Okemo, P. (2013). Current Status And Proposed Postgraduate Training Model For East Africa Universities. Mount Kenya University Annual Research And Innovation Conference, Nairobi, 28th-30th Augus
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| 58 | 2013 | Factors That Influence Enrolment In Agriculture And Related Sciences In Public Universities In Kenya
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| 59 | 2013 | Evaluation Of Information And Communication Technology (2013). Utilization By Small Holder Banana Farmers In Gatanga District, Kenya. Journal Of Agricultural Education And Extension. 1-15.
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| 60 | 2013 | Status And Spread Of Banana Xanthomonas Wilt In Kenya
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| 61 | 2013 | Management Of Snap Bean Pests By Integrating Seed Dressing, Foliar Sprays And Intercropping With Maize. Hak Conference, Meru, Kenya, 3rd-6th December 2013
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| 62 | 2013 | Ochilo, W., Nyamasyo, G. & Nderitu, J. (2013). Impact Of Soil Fertility Management Practices On A Major Insect Pest And Yield Of Beans (Phaseolus Vulgaris L.) In Taita District, Kenya. African Journal Of Food, Nutrition And Development, 13(5): 8340-83
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| 63 | 2013 | Nderitu, John H. And Arshfod Njenga (2013). Implementation Of Value Chain Development Training Curricula At Selected Universities In Kenya ( January 2013). PSDA/GIZ, Nairobi, Kenya
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| 64 | 2013 | Opportunity For University Intervention In Upgrading Animal Health Service Industry (2013). Workshop Proceedings, REGAL-AG/ACDI/VOCA, Kenya, MKU, August 2013, Marsabit, Kenya
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| 65 | 2013 | K. K. Mutundu, J. H. Nderitu, D. Mureithi, H. Wainaina, B. Ayugi (2013). Baseline Survey On Interventions In Upgrading Animal Health And Production In ASALS Of Marsabit County, Marsabit, Kenya
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| 66 | 2013 | Evaluation Of Rice Genotypes For Susceptibility To African White Rice Stem Borer, Maliarpha Separatella Rag.
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| 67 | 2013 | PROCEEDINGS OF STAKEHOLDERS’ CONSULTATIVE WORKSHOP ONOPPORTUNITIES FOR INTERVENTION IN UPGRADING ANIMAL HEALTH SERVICE INDUSTRY IN ASALs OF KENYA
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| 68 | 2013 | A Logit Analysis Of Farmer’ Knowledge Of African White Rice Stem Borer, Maliarpha Separatella Rag At Mwea Irrigation Scheme, Kirinyaga County, Central Province, Kenya
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| 69 | 2013 | FIRST INTERNATIONAL RESEARCH AND INNOVATION CONFERENCE
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| 70 | 2013 | THE STRUGGLE FOR BETTER TERMS AND CONDITIONS OF SERVICE FOR PUBLIC UNIVERSITY LECTURERS IN KENYA, 2013-2014. Prof John H. Nderitu University Of Nairobi
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| 71 | 2013 | The Importance Of African Honey Bees (Apis Mellifera L.) As Pollinators Of High Value Crops In Kenya: A Case Of Butternut Squash (Cucurbita Moschata Duchsne Ex Poir.) Pollination.
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| 72 | 2013 | TOWARDS ACHIEVING A KNOWLEDGE ECONOMY THROUGH RESEARCH AND INNOVATION
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| 73 | 2013 | Evaluation Of Safe Pesticides And Varieties For Management Of Insect Pests In Snap Beans In Kenya
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| 74 | 2013 | BIO-ECOLOGY AND MANAGEMENT OF AFRICAN WHITE RICE STEM BORER, MALIARPHA SEPARATELLA RAGONOT (LEPIDOPTERA: PYRALIDAE) AT MWEA IRRIGATION SCHEME, KENYA
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| 75 | 2013 | Enhanced Legume Productivity Through Incorporation Of Lablab Residues And Use Of Legume Species Tolerant To Root Rot Disease Complex
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| 76 | 2013 | MANAGEMENT OF THRIPS IN FRENCH BEANS BY USE OF INTEGRATED PESTICIDE APPLICATION REGIMES IN EMBU EAST AND MWEA EAST DISTRICTS
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| 77 | 2013 | Effect Of Nutrient Management And Moisture Conservation Practices On Growth, Yield And Quality Of Snap Bean (phaseolus Vulgaris L.) In Central Kenya
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| 78 | 2013 | ANNUAL PLANNING WORKSHOP FOR NCST SEED POTATO PROJECT
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| 79 | 2013 | KAPAP Vegetables VC Proposal 2ND PHASE- 30-10-2013
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| 80 | 2013 | Research And Development In Mount Kenya University
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| 81 | 2013 | Management Of Thrips
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| 82 | 2013 | BIOLOGICAL CONTROL OF MYZUS PERSICAE AND APHIS GOSSYPII ON POTATO CROP (SOLANUM TUBEROSUM L) IN KENYA
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| 83 | 2012 | Effect Ofsoil Fertility Amendments With Nitrogen, Phosphorus And Farmyard Manure On Crop Nutrient Contents, Bean Stem Maggot Infestation And Yield Of Common Beans (Phaseolus Vulgaris (L.) In Western Kenya
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| 84 | 2012 | On‐farm Seed Potato Storage Practices In Kenya: A Case Study Of Nyandarua
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| 85 | 2012 | Functional Responses Of Cheilomenes Propingua, C. Lunata And C. Sulphurea (Coleoptera: Coccinellidae) To Predation On Aphis Gossypii (Homoptera: Aphididae) In Eastern Tanzania
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| 86 | 2012 | ASSESSMENT OF YIELD LOSS CAUSED BY MALIARPHA SEPARATELLA RAG. ON RICE AT MWEA, KIRINYAGACOUNTY, KENYA 1Kega, V.M., J.H Nderitu2,F. Olubayo3 And M. Kasina4 1Kenya Agricultural Research Institute- Mwea
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| 87 | 2012 | TASKFORCE REPORT ON MKU POSTGRADUATE TRAINING
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| 88 | 2012 | Management Of Thrips ( Thrips Tabaci ) In Bulb Onion By Use Of Vegetable Intercrops
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| 89 | 2012 | Determination Of Levels Of Striga Germination Stimulants For Maize Gene Bank Accessions And Elite Inbred Lines.
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| 90 | 2012 | Effect Of Grain Moisture Content And Storage Time On Efficacy Of Inert And Botanical Dusts For The Control Of Sitophilus Zeamais In Stored Maize
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| 91 | 2012 | Yield_performance_of_potatoseed_tubers_after_long_storage_in__a_difuse_light_store
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| 92 | 2012 | Proceedings Of The Seed Potato Project Planning Workshop Held At AIRC KARI
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| 93 | 2012 | CURRICULA FOR AGRICULTURAL VALUE CHAIN DEVELOPMENT FOR UNIVERSITIES AND COLLEGES
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| 94 | 2012 | RECORD MANAGEMENT IN UNIVERSITY INSTITUTIONS
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| 95 | 2012 | Efficacy Of Potassium Salts In Management Of Thrips
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| 96 | 2012 | Snap Bean Integrated Crop Management Booklet
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| 97 | 2011 | Spatial Arrangement Of Maize As Border Crop To Manage Aphids And Aphid-Transmitted Viruses In Potato
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Field experiments were conducted over two growing seasons to determine the effect of spatial arrangement of maize as border crop to manage aphid infestation and aphid-transmitted virus diseases in potato (Solanum tuberosum L.). Maize was planted at a distance of 0.5, 1.0, 1.5, 2.0, 2.5 and 3.0 m from the potato crop. Aphid infestation and incidence of virus infection was monitored over the growth period of potato. Aphids were recorded on potato leaves and in water pan traps while virus infection was determined by visual symptoms on the potato plant. At harvest, potato tubers were graded into ware, seed, and chatts and weighed. The results show that placement of maize border up to 0.5 m and 1.0 m reduced aphid population and virus disease incidence by up to 48%. The maize borders had no effect on the yield of seed potato grade but only on the ware. Placing maize border at 0.5m had the greatest reduction of ware potato yield by 48%. Maize borders placed up to 1m from the potato crop would be effective in the management of potato aphids and aphid-transmitted virus diseases. This study shows that the technology would be ideal for propagation plots in small scale seed potato production.
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| 98 | 2011 | Commercialization Of Patented Herbal Medicinal Products In Kenya
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| 99 | 2011 | Effect Of Varying Inorganic Nitrogen Fertilizer Regimes On Growth, Yield And Quality Of Snapbeans.
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| 100 | 2011 | Integrated Management Of Aphid-transmitted Viruses In Potato (Solanum Tuberosum L.)
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| 101 | 2011 | Management Of Thrips In Bulb Onions Using Vegetable Intercrops
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| 102 | 2011 | Proceeding Of The National Public Debate On GMO
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| 103 | 2011 | Status, Constraints And Marketing Opportunities For Canning Navy Beans In Kenya
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| 104 | 2011 | Resistance Of Potato Varieties To Potato Tubermoth (phthorimaea Opercullela (Zeller). ).
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| 105 | 2011 | Farmers Ethno- Ecological Knowledge Of The Termite Problem In Semi-arid Nakasongola
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| 106 | 2011 | CURRICULA FOR AGRICULTURAL VALUE CHAIN DEVELOPMENT FOR UNIVERSITIES AND COLLEGES DEVELOPED BY GESELLSCHAFT FUER INTERNATIONALE ZUSAMMENARBEIT (GIZ), PROMOTION OF PRIVATE SECTOR DEVELOPMENT IN AGRICULTURE (PSDA) AND KENYAN
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| 107 | 2011 | Thumbnail Evaluation Of Drought Tolerance Mechanisms In Mesoamerican Dry Bean Genotypes
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| 108 | 2011 | Spatial And Temporal Fluctuation Of Malliarpha Separatella Rogonot , Lepidoptera: Pyralidae At Mwea Irrigation Scheme
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| 109 | 2011 | Effect Of Intercropping Bulb Onion And Vegetables On Purple Brotch And Downy Mildew
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| 110 | 2011 | Status, Constraints And Marketing Opportunities For Canning Navy Beans In Kenya.
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| 111 | 2011 | Effect Of Varying Inorganic Nitrogen Fertilizer Regimes On Growth, Yield And Quality Of Snapbeans.
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| 112 | 2011 | Efficacy Of Locally Available Materials And Bio-control Agents In The Management Of Potato Tubermoth (Phthorimaea Opercullela (Zeller).
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| 113 | 2011 | Evaluation Of Neonicotinoid Seed Dressing Formulations For Control Of Bean Fly (OPhiomyia Spp.) In Snapbeans In Mwea, Central Kenya
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| 114 | 2011 | Effect Of Biotic And Aboitic Factors On Composition And Foraging Intensity Of Subterranean Termites.
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| 115 | 2011 | Integrated Management Of Aphid-transmitted Viruses In Potato (Solanum Tuberosum L.).
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| 116 | 2011 | Proceeding Of The First Consultative Forum On Commercialization Of Patented Herbal Medicinal Products In Kenya,
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| 117 | 2011 | Distribution Of Potato Tuber Moth (Phthorimea Opercullela (Zeller) And Damage Caused By Potato Tubers (Solanum Tuberosum L.) In Farmers Stores Agro 2011 Biennial Conference, UON, Nair
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| 118 | 2011 | Field Evaluation Of Foliar And Soil Insecticides For The Control Of Aphis Gossypii Glover (Homoptera: Aphididae) On Potatoes In Kenya
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| 119 | 2011 | PROCEEDINGS OF THE LAUNCH OF ON-FARM SEED POTATO STORAGE
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| 120 | 2011 | USE OF NEONICOTINOID INSECTICIDES AND VARIETAL RESISTANCE TO MANAGE BEAN FLY (OPHIOMYIA SPP.) AND OTHER ARTHROPOD PESTS OF SNAP BEAN (PHASEOLUS VULGARIS L.)
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| 121 | 2011 | EFFICACY OF Steinernema Karii AND Heterohabditis. Indica NEMATODES IN THE MANAGEMENT OF THE SWEET POTATO WEEVIL ( Cylas Puncticollis) IN KIBWEZI
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| 122 | 2010 | Baseline Survey For Status Of Banana Xanthomonas Wilt In Kenya
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| 123 | 2010 | Biological Control Agents Of Aphids (Homoptera: Aphididae) On Potatoes(Solanum Tuberosum L.) In Kenya.
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| 124 | 2010 | Effects Of Soil Texture On Virulence And Survival Of Steinernema Karii And Heterorhabditis Indica
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| 125 | 2010 | Mainstreaming And Institutionalization Of Value Chain Approach. Round Table Discussion On Agricultural Value Chain
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| 126 | 2010 | Screening Gene Bank Maize Accessions For Straiga Hermontica Resistance
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| 127 | 2010 | Some Aspects Of Squash ( Cucurbita Pepo L.) Pollination Ecology In Kenya
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| 128 | 2010 | MONITORING AND EVALUATION OF IMPLEMENTATION OF LEGAL NOTICE NO. 113 OF 5TH SEPTEMBER 2008 (THE LOCAL GOVERNMENT (ADOPTIVE BY-LAWS) (AGRICULTURAL PRODUCE) (STANDARD WEIGHT OF PACKAGES) ORDER, 2008)
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| 129 | 2010 | Evaluation Of Chilo Partellus And Busseola Fusca Susceptibility To Endotoxin In Bt Maize
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| 130 | 2010 | Evaluation Of Border Crops Against Infestation And Damage Of Cabbage By Diamond Back Moth (Plutella Xylostella)
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| 131 | 2010 | Effectiveness Of Entomopathogenic Nematodes Against Sweet Potato Weevil (Cylas Puncticollis Boheman (Coleoptera: Apionidae)] Under Semi-Field Conditions In Kenya
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| 132 | 2010 | Some Aspects Of Squash(Cucurbita Pepo L.) Pollination Ecology In Kenya.
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| 133 | 2010 | Effect Of Maize Border Crop Placement Distance On Aphid Population And Aphid-transmitted Virus Diseases In Potato.
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| 134 | 2010 | Pest Management Plan (PMP) For Arid And Semi-arid Areas In Kenya. World Bank, Nairobi
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| 135 | 2010 | PEST MANAGEMENT PLAN FOR KENYA ARID AND SEMI-ARID LANDS SWAp
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| 136 | 2010 | DEBATE ON BIOSAFETY BILL AND GENETICALLY MODIFIED ORGANISMS
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| 137 | 2010 | Yield_performance_of_potato Clones With Durable Resistance To Late Blight
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| 138 | 2010 | Contribution Of Bees To Pollination Of Sunflower
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| 139 | 2009 | Use Of Cereal Border Crops In Management Of Aphid-transmitted Viral Diseases During Seed Potato (Solanum Tuberosum) Production
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| 140 | 2009 | Survey, Biology And Control Of Agromyzid Beanflies In Common Beans (Phaseolus Vulgaris L.) In Kenya
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The common beans are the most widely grown pulses in Kenya. They are intercropped with such crops as maize, sorghum, cassava, in high and low potential areas. They are consumed as green leaves, green pods and dry beans and form an economic source of protein to the bulk of Kenya population. However, despite their importance as a major source of protein, their yields are variable for a number of reasons. One of the major limitations to obtaining high yields include insect pests. Among the pests of the beans, certain agromyzid beanflies have been reported to cause heavy losses to beans in Kenya. The control measures for the beanflies include mainly seed treatment with aldrin or dieldrin. However, these insecticides are being withdrawn because of their persistence in the environment. Therefore, the objectives of the research project are as follows: 1) to map the distribution of beanflies in bean growing areas in Kenya in four cropping seasons. 2) to identify the losses of common beans due to beanflies in farmers fields in four seasons. 3) To relate the biology of beanflies to the growth stages of the common beans grown in the field for two seasons. 4) to determine the effectiveness of the insecticides and natural enemies in the control of beanflies on common beans grown in the field for four seasons. 5) to investigate the incidence of beanflies and its natural enemies in different cropping patterns of common beans grown in the field for four seasons. 6) To evaluate soil, seed, foliar and spray treatments for control of beanflies. The project will evolve an integrated control strategy of beanflies for the poor resource farmer. The results will be obtained by undertaking a survey in farmers fields, field and laboratory experiments at the research centres. The cost for all the research activities will be U$12,588. The project is expected to take two years
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| 141 | 2009 | Effect Of Rhizobia Inoculation, Farm Yard Manure And Nitrogen Fertilizers On Nodulation And Yield Of Food Grain Legumes
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| 142 | 2009 | Seed Potato Production And Occurrence Of Transmitted Viruses In Nyandarua District. 7th Workshop On Sustainable Horticultural Production In The Tropics. Universit
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| 143 | 2009 | Incidence Of Aphid-transmitted Viruses In Farmer-based Seed Potato Tubers In Kenya
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| 144 | 2009 | Combining Ability Among Twenty Insect Resistant Maize Inbred Lines Resistant To Chilo Partellus And Busseola Fusca Stem Borers. International Journal Of Plant Production
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| 145 | 2009 | With-plant Distribution And Seasonal Population Dynamics Of Flower Thrips (Thysanoptera: Thripidae) Infesting French Beans (Phaseolus Vulgaris L.) In Kenya
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| 146 | 2009 | Curriculum Development And Approval Process
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| 147 | 2009 | IPM Framework For KAPAP Projects, KAPAP, Nairobi, Kenya
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| 148 | 2009 | Insects Associated With Sweet Potatoes (Ipomea Batata (L) Lamk) In Eastern Kenya
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| 149 | 2009 | Evaluation Of Cropping Systems As A Strategy For Managing Flower Thrips In Kenya.
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| 150 | 2009 | Utilization Of Border Crops To Manage Aphid Colonization And PVY Incidence On Potato (Solanum Tuberosum L.
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| 151 | 2009 | Cultural And Agronomic Practices Used In Small Scale Potato (Solanum Tuberosum L) Production System In Kenya
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| 152 | 2009 | BRIDGING THE PUBLIC KNOWLEDGE DIVIDE:EXPERIENCES IN COMMUNICATING IN UNIVERSITIES
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| 153 | 2009 | EVALUATION OF BORDER CROPS AND VARIETAL RESISTANCE FOR THE MANAGEMENT OF DIAMONDBACK MOTH (Plutella Xylostella L.) ON CABBAGE (Brassica Oleracea Var. Capitata)
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| 154 | 2009 | PROCEEDINGS OF THE NAVY BEAN PROJECT INCEPTION WORKSHOP
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| 155 | 2009 | BRIDGING THE PUBLIC KNOWLEDGE DIVIDE: EXPERIENCES IN COMMUNICATING IN UNIVERSITIES
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| 156 | 2008 | J. W. Muthomi; P. E. Otieno; G. N. Chemingw
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OBJECTIVE: To determine the pattern of occurrence of dental injuries in the 0-15 year-olds. DESIGN: A retrospective study. SETTING: Kenyatta National Hospital, Nairobi. SUBJECTS: Five hundred and five patient records with dental injuries were retrieved and analysed. RESULTS: A total of 505 patient records with dental injuries were retrieved and analysed. Most of the injuries were recorded in the year 1999 (22.2%). Boys were more affected (63.0%) than girls (37.0%). The main presenting complaint recorded was pain (75.8%).The majority of the patients (69.5%) presented for treatment during the same day or the day after trauma. Falls were the leading cause of injuries (73.5%). Most injuries involved two teeth (47.1%) and the maxillary central incisors were the most affected teeth both in the primary (67.5%) and permanent (64.0%) dentitions. Luxation injuries were the most common type of dental trauma with 47.5% occurring in the permanent teeth and 77.3% in the primary teeth. The main radiographic investigation performed was intraoral periapical views (52.9%) following which dental extraction (34.4%) was the main treatment modality offered. CONCLUSION: Prospective cross-sectional studies to determine the prevalence of dental injuries are needed. Furthermore improving the knowledge of dental practitioners through continuing dental education programmes would help in updating them on current trends in managing these injuries. |
| 157 | 2008 | Agricultural Entomology: Learning Agricultural Entomology Through Practice, Equatops Trading
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| 158 | 2008 | Nderitu, J. H.; Nyamasyo, G. H. N; Kasina, J. M. URI: Http://erepository.uonbi.ac.ke:8080/xmlui/handle/123456789/53194 Date: 2008 Show Full Item Record Files In This Item Files Size Format View There Are No Files Associated With This Item. This Item
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| 159 | 2008 | Virulence Of The Entomopathogenic Fungi Beauveria Bassiana And Metarhizium Anisopliae To Sweet Patato Weevil Cylas Puncticollis And Effects On Fecundity And Egg Viability
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| 160 | 2008 | Incorporation Of Green Manure Plants Into Bean Cropping Systems Contribute To Root-Knot Nematode Suppression
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| 161 | 2008 | Diversity Of Sunflower And Their Effect On Seed Yield In Makueni District, Eastern Kenya. Span
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| 162 | 2008 | Evaluating Of Synthetic And Neem-based Insecticides For Managing Aphids On Okra (Malvaceae) In Kenya
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| 163 | 2008 | Management Of Aphids And Aphid-transmitted Viruses In Stored Potatoes In Kenya.
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| 164 | 2008 | Factors Influencing The Occurrence Of Entomopathogenic Nematodes In The Central Rift Valley Region Of Kenya
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| 165 | 2008 | Management Of Potato Viruses In Seed Potato Production Using Border Crops
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| 166 | 2008 | Management Of Thrips (Thysanoptera; Thripidae) Infestation On French Beans (Phaseolus Vulgaris L.) In Kenya By Combination Of Insecticides And Varietal Resistance
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| 167 | 2008 | Evaluation Of French Bean(Phaseolus Vulgaris L.) Cultivars And Breeding Lines For Resistance To Thrips (Thysanoptera; Thripidae)Pests In Kenya
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| 168 | 2008 | Management Of Thrips (Thysanoptera; Thripidae) In Kenya; Economics Of Insecticide Applications
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| 169 | 2008 | Incidence Of Aphids And Aphid-transmitted Viruses In Farmer-based Seed Potato Production
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| 170 | 2008 | Nyamasyo, D. And Nderitu, J. H. (2004 ). Lecture Notes On Invertebrate Animals.
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| 171 | 2008 | Sweet Potato Weevil Management: An Integrated Approach Based On Entomopathogenic Nematodes, Insecticides And Cultural Practicess
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| 172 | 2008 | Use Of Cereal Border Crops In Management Of Aphid-transmitted Viral Diseases During Seed Potato (Solanum Tuberosum) Production
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| 173 | 2008 | HUMAN CAPACITY BUILDING AT UNIVERSITY OF NAIROBI FACULTY OF AGRICULTURE
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| 174 | 2008 | EVALUATION OF CROPPING SYSTEMS AND PESTICIDES AS STRATEGIES FOR MANAGING FLOWER THRIPS IN SNAP BEANS IN MWEA-TEBERE, CENTRAL KENYA
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| 175 | 2008 | HUMAN CAPACITY BUILDING AT UNIVERSITY OF NAIROBI FACULTY OF AGRICULTURE
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| 176 | 2007 | Muthomi, J.W.; Otieno P.E.; Chemining
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OBJECTIVE: To determine the pattern of occurrence of dental injuries in the 0-15 year-olds. DESIGN: A retrospective study. SETTING: Kenyatta National Hospital, Nairobi. SUBJECTS: Five hundred and five patient records with dental injuries were retrieved and analysed. RESULTS: A total of 505 patient records with dental injuries were retrieved and analysed. Most of the injuries were recorded in the year 1999 (22.2%). Boys were more affected (63.0%) than girls (37.0%). The main presenting complaint recorded was pain (75.8%).The majority of the patients (69.5%) presented for treatment during the same day or the day after trauma. Falls were the leading cause of injuries (73.5%). Most injuries involved two teeth (47.1%) and the maxillary central incisors were the most affected teeth both in the primary (67.5%) and permanent (64.0%) dentitions. Luxation injuries were the most common type of dental trauma with 47.5% occurring in the permanent teeth and 77.3% in the primary teeth. The main radiographic investigation performed was intraoral periapical views (52.9%) following which dental extraction (34.4%) was the main treatment modality offered. CONCLUSION: Prospective cross-sectional studies to determine the prevalence of dental injuries are needed. Furthermore improving the knowledge of dental practitioners through continuing dental education programmes would help in updating them on current trends in managing these injuries. |
| 177 | 2007 | Effect Of Chemical Pesticide Spray On Insect Pests And Yield Of Food Grain Legumes
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| 178 | 2007 | Evaluation Of Pesticide/variety Combinations For Thrips (Thysanoptera: Thripidae) Management On French Beans (P. Vulgaris L.) In Kenya
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A field study was undertaken to evaluate pesticide/variety combinations for thrips infestation and damage in Kabete Field Station, University of Nairobi, Kenya. Four French bean varieties (Amy, Monel, Samantha and Impala) and four insecticides (Lambda-cyhalothrin (Karate 1.75 EC), Petroleum spray oil (DC Tron 500 ML), Spinosad (Tracer 480 SC) and Fipronil (Regent 50 SC)) were used for the study. The study revealed that both the varieties and insecticides influenced thrips infestation independently. Tracer 480 SC and Regent 50 SC gave the lowest thrips numbers in all the varieties. The mean number of F. occidentalis in Karate 1.75 EC sprayed plots was higher and significantly different from plots sprayed with Tracer 480 SC and Regent 50 Sc. The mean number of M. sjostedti was not significantly different for all the plots sprayed with Tracer 480 SC, Regent 50 SC and Karate 1.75 EC. DC Tron 500 ML had no significant effect on thrips infestation.
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| 179 | 2007 | Response Of Snapbean To Inorganic N-fertilizer And Farm And Manure In Mwea
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| 180 | 2007 | Seed Potato Production And Occurrence Of Transmitted Viruses In Nyandarua District
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| 181 | 2007 | Use Of Green Manure Plants In Cropping Systems To Suppress Root-knot Nematodes
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Green manure plants namely Calliandra calothyrsus, Canavalia ensiformis, Chenopodium quinoa, Crotalaria juncea, Desmodium uncinartum, Gliricidia sepium, Leucaena leucocephala, Mucuna pruriens, Tephrosia purpurea, Tithonia diversifolia and Vicia villosa were evaluated to determine their reaction to Meloidogyne javanica. Sesbania sesban and Tagetes minuta were included as susceptible and resistant checks respectively. In the glasshouse, pots were filled with steam-sterilized soil, sown with the green manure plant, and then infested with 4,000 eggs and juveniles of M. javanica. Field experiments were conducted in plots infested with a mixed population of M. javanica and M. incognita. Crotalaria juncea, D. uncinartum, G. sepium, L. leucocephala, M. pruriens, T. diversifolia and T. minuta had galling and eggmass indices lower than 2 and reduced nematode populations by up to 80%. Calliandra calothyrsus, C. quinoa and C. ensiformis had galling indices lower than 4 and eggmass indices less than 3.2. Vicia villosa and T. purpurea were susceptible with galling indices greater than 7 and nematode population buildup of up to 500%. Chenopodium quinoa, C. juncea, D. uncinartum, G. sepium, L. leucocephala, M. pruriens and T. diversifolia are suppressive to root-knot nematodes and can therefore be recommended as rotation, fallow or cover crops.
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| 182 | 2007 | Effects Ofinsecticides Applications On Sunflower (Helianthus Annuus L.) Pollination In East Kenya.
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| 183 | 2007 | Bees In Horticultural Crop Production; Revisiting The Sale Of Pollination In Crop Productivity
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| 184 | 2007 | Sweet Potato Weevil Management: An Integrated Approach Based On Entomopathogenic Nematodes, Insecticides And Cultural Practice. Proceedings Of The 1st KARI Mini Conference, KARI, Nairo
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| 185 | 2007 | Effect Of Root Rot Pathogens And Fungicide Seed Treatment On Nodulation In Food Grain Legumes.
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| 186 | 2006 | Combining Ability Among Twenty Insect Resistant Maize Inbred Lines Resistant To Chilo Partellus And Busseola Fusca Stem Borers
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A partial diallel design was used among 20 maize inbred lines to form 110 F1 hybrids to generate information on the values of these lines for developing insect resistant maize varieties during the short rains season of 2006. The hybrids were evaluated for resistance to the C. partellus and B. fusca, and for agronomic performance over two seasons during long and short rains of 2007 at a mid-altitude dry early maturity site at KARI Kiboko, and the moist mid-altitude medium maturity site at KARI Embu. leaf damage score (using a scale of 1-9 where: 1= No damage and 9= extremely damaged), number of exit holes, cumulative tunnel length, and grain yield were measured as resistance traits. The genotype sum of square was partitioned into general combining ability (GCA) and specific combining ability (SCA) effects. Maize inbred lines with good general combining ability for insect resistance including maize inbred lines with significant and negative GCA`s for leaf damage were identified as lines 12,16,18,19 and 20 at Kiboko and lines 8, 17, 18, and 20 in Embu. Results showed that the problem of stem borers intensified by over 40% within four years in the experimental region of Eastern Kenya; currently mean yield loss due to stem borers was assessed to be about 56%. Several hybrids had significant negative SCA for leaf damage and significant positive SCA for grain yield. The maize inbred lines studied revealed their potential for use in breeding programs for insect resistance that could result in a correlated response for increased grain yield. Recurrent selection would be the best option to develop high yielding insect resistant germplasm for this region of Kenya considering that additive gene action were predominant. Evidently, it would be more difficult to develop host plant resistance to B. fusca than to C. partellus
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| 187 | 2006 | Evaluation Of Pesticide/variety Combinations For Thrips (Thysanoptera: Thripidae) Management On French Beans (P. Vulgaris L.) In Kenya
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| 188 | 2006 | Evaluation Of Companion Crops For Thrips (Thysanoptera: Thripidae) Management On French Bean, Phaseolus Vulgaris L. (Fabaceae)
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| 189 | 2006 | Evaluation Of Companion Crops For Thrips (Thysanoptera: Thripidae) Management On French Bean, Phaseolus Vulgaris L. (Fabaceae).
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| 190 | 2005 | Tende, R. M., J. H. Nderitu, Mugo, S., J. M. Songa, F. O. Olubayo And D. Bergvinson (2005). Screening For Development Of Resistance By The Spotted Stem Borer(Chilo Partellus) To Bt Maize.
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OBJECTIVE: To determine the pattern of occurrence of dental injuries in the 0-15 year-olds. DESIGN: A retrospective study. SETTING: Kenyatta National Hospital, Nairobi. SUBJECTS: Five hundred and five patient records with dental injuries were retrieved and analysed. RESULTS: A total of 505 patient records with dental injuries were retrieved and analysed. Most of the injuries were recorded in the year 1999 (22.2%). Boys were more affected (63.0%) than girls (37.0%). The main presenting complaint recorded was pain (75.8%).The majority of the patients (69.5%) presented for treatment during the same day or the day after trauma. Falls were the leading cause of injuries (73.5%). Most injuries involved two teeth (47.1%) and the maxillary central incisors were the most affected teeth both in the primary (67.5%) and permanent (64.0%) dentitions. Luxation injuries were the most common type of dental trauma with 47.5% occurring in the permanent teeth and 77.3% in the primary teeth. The main radiographic investigation performed was intraoral periapical views (52.9%) following which dental extraction (34.4%) was the main treatment modality offered. CONCLUSION: Prospective cross-sectional studies to determine the prevalence of dental injuries are needed. Furthermore improving the knowledge of dental practitioners through continuing dental education programmes would help in updating them on current trends in managing these injuries. |
| 191 | 2005 | Comparative Resistance/tolerance Of Commercial Potato Cultivars In Kenya To Major Aphid Pests
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| 192 | 2005 | "Screening For Development Of Resistance By The Spotted Stem Borer, Chilo Partellus Swinhoe (Lepidoptera: Pyralidae) To Bt-maize Delta-endotoxins
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| 193 | 2005 | Comparative Resistance /tolerance Of Commercial Potato Cultivars In Kenya To Major Aphid Pests.
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| 194 | 2005 | Comparative Resistance /tolerance Of Commercial Potato Cultivars In Kenya To Major Aphid Pests
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| 195 | 2005 | Universities And Trade Unionsim
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| 196 | 2005 | Guidelines_for_postharvest_handling_of_some_fruits__vegetables_and_dry_grain
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| 197 | 2005 | AGRICULTURAL EDUCATION IN UNIVERSITIES BY YEAR 2030
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| 198 | 2004 | Evaluation Of Variety Resistance As Amangement Srategy For Thrips (megalurothrips Sjostedti Trybom And Frankliniella Occidentalis Pergrande) On French Beans (phaseolus Vulgaris L.)
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French bean, phaseolllus vulgaris l. is a major horticultural crop in kenya mainly grown for fresh export market. A major contraint in succesfull production of the crop is pests and diseases. thrips are considered as one of the major inscect pests attacking mainly flowers and causing losses of above 60percentage A lot of pesticides use and hence pesticide resideu has been attributed to thrips control. In view of the introduction of maximum pesticides level by importing countries, there is need to develope intergrated thrips mangement strategy with less pesticide use . Towards this goal, nine french beans varieties were evaluated for resistance to thrips (megalurothrips sjostedti frankliniella occidentalis)during the period (november 2001 to april 2002). This was done in two planting phases using randomised complete block design in four replicates. It was evident from the study that there significant diffrences in resistance to thrips by varieties. monel variety was found to be the most susceptibleand impala the least.Frankliniella occidentalis was more abadunt than megalurothrips sjostedti during the study period. The ratio of M . sjostedti to F. occidentalis on flowers was 1.5and 1.7 during the 1st and 2nd planting respectively.
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| 199 | 2004 | Effects Of Steinernema Kari And Heterohabditis Indica Against The Sweet Potato Weevil (Cylas Puncticollis).
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| 200 | 2004 | Major Insects Of Crops In Kenya
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| 201 | 2004 | Universities And Trade Unionisms . In “ Re- Invigorating The University Madate In A Globalising Environment
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| 202 | 2004 | Effects If Four Biopesticides On The Spider Mite Tetranychanus Evansi Baker And Pritchard In The Laboratory
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| 203 | 2004 | Major Insects Of Crops In Kenya
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| 204 | 2004 | Effects Of Steinernema Kari And Heterohabditis Indica Against The Sweet Potato Weevil (Cylas Puncticollis).
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| 205 | 2004 | EVALUATION OF VARIETAL RESISTANCE AND PESTICIDES AS MANAGEMENT STRATEGIES FOR THRIPS (Megalurothrips Sjostedti Trybom And Frankliniella Occidentalis Pergande) ON FRENCH BEANS (Phaseolus Vulgaris L.)
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| 206 | 2004 | EFFICACY OF Steinernema Karii AND Heterohabditis. Indica NEMATODES IN THE MANAGEMENT OF THE SWEET POTATO WEEVIL ( Cylas Puncticollis) IN KIBWEZI
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| 207 | 2003 | Field And Laboratory Investigations Onspiromesifen And Other Acaricides In The Control Of Red Spider Mites In Tomatoes;
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| 208 | 2003 | Importance And Scope Of Preventative Pest Management For Quarantine Compliance Of Kenyan Export Horticulture Produce At European Destinations.
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| 209 | 2003 | Perfomance Of Synthetic Insecticides, Neem (Azadirchta Indica ) Extract And Mineral Oils In Management Of Aphids And Viruses In Seed Potato In Kenya.
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| 210 | 2003 | The Status Of Potato Leafroll Virus In Kenya. Journal Of Plant Pathology.
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| 211 | 2003 | Effect Of Steinernema Kari And Heterobabditis Indica Against Sweet Potato Weevil
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| 212 | 2003 | Effect Of Steinernema Kari And Heterobabditis Indica Against Sweet Potato Weevil (Cylas Punticollis ).
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| 213 | 2003 | In: 9th Triennial Symposium For International Society For Tropical Root And Tuber Crops- Africa Branch, 31st October
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| 214 | 2003 | Agronomic_Guidelines_for_Organic Farming
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| 215 | 2003 | Potential_to_produce_organic_agricultural_products_for_export_market_from_teso_district_Western_Kenya
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| 216 | 2002 | Development Of An Integrated Aphid And Virus Disease Management Strategies For The Farmer-based Seed Potato Production System In Kenya
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| 217 | 2002 | Development Of An Integrated Pest Management (IPM) System For Thrips On Snapbeans (. Phaseolus Vulgaris L.) In Kenya
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| 218 | 2002 | Incidence Of Pests And Diseases In Farmer-based Seed Potato Production System In Kenya.
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| 219 | 2002 | Occurrence Of Four Major Potato Viruses In Three Main Potato Growing Areas In Kenya
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| 220 | 2002 | Pesticide Use And Implications In Horticultural Export Crops In Kenya
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Horticultural exports earned Kenya 14 billion and 20 billion shillings in the years 2000 and 2001 respectively, from an estimated volume of 99 million tonnes and 93 million tonnes respectively. This indicates an increase in value of the exports, and makes horticulture the second highest foreign income earner after tea. Pesticides are a major production cost in the large-scale enterprises. Every year large amounts of pesticides are used to manage pests in horticulture, so as to ensure high quality production especially for export market. Local markets have also evolved as to demand high quality blemish free horticultural products. This has made farmers to increase use of pesticides and other agrochemicals. The types, quantities and market value of pesticides imported and sold for various crops would indicate the trend of pesticides usage in Kenya. The horticultural exports from this country are subject to stringent European Union (EU) requirements on Maximum Residue Levels (MRLs). The EU being the most important export destination, the issue of MRLs should urgently be addressed. Measures need to be put in place to ensure that Kenya does not lose its horticultural export niche. These may include, developing and devising crop protection strategies based on the farmers’ needs, strengthening various relevant institutions and developing sound pest management policies.
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| 221 | 2002 | Evaluation Of Varietal Resistance As A Management Strategy For Thrips(Megalurothrips Sjsotedti Trybom And Franliniella Occidentalis Pergrade) On French Bean, Phaseolus Vugaris L.).
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| 222 | 2002 | Valuation Of Varietal Resistance As A Management Strategy For Thrips(Megalurothrips Sjsotedti Trybom And Franliniella Occidentalis Pergrade) On French Bean, Phaseolus Vugaris L.)
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| 223 | 2002 | Incidence Of Pests And Diseases In Farmer-based Seed Potato Production System In Kenya.
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| 224 | 2002 | Pesticide Use And Implications In Horticultural Export Crops In Kenya.
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| 225 | 2002 | (Companion Cropping As An Integrated Pest Management(IPM) Component For Management Of Thrips In French Beans(Phaseolus Vulgaris L.)
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| 226 | 2002 | Towards_production_and_marketing_of_organic_produce_by_smallholdres_in_teso_district_western_kenya
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| 227 | 2002 | Sustainable_agricultural_production_and_marketing_by_small__holder_farmers_in_Mbeere_district.pdf
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| 228 | 2002 | Principles_and_practice_of_conservation_farming
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| 229 | 2001 | Controlling Field Pests. In “ Managing Dryland Resources: An Extension Manual For Eastern And Southern Africa
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| 230 | 2001 | Current French Bean Pests And Disease Management At Mwea-Tebere, Central Kenya. Workshop On Sustainable Horticultural Production In The Tropics Held On 2- 6 October
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| 231 | 2001 | Natural Enemies Associated With Arthropod Pests Of Pigeon Pea In Easter Africa. International Chickpea And Pigeon Pea
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| 232 | 2001 | Principles And Practice Of Conservation Farming.
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| 233 | 2001 | Controlling Field Pests
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| 234 | 2000 | A Case Study On Developing And Disseminating Integrated Pest Management Technologies For Bean Root Rots In Eastern And Central Africa.
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| 235 | 2000 | The Potential Of Organic Agriculture In Kenya.
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| 236 | 1999 | Challenges On Agricultural Information Dissemination And Networking: Case Of A Kenyan Ngo Programme.
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| 237 | 1999 | Natural Enemies Associated With Arthropod Pests Of Pigeon Pea In Easter Africa.
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| 238 | 1999 | Resistance Of Some Promising Potato Clones To Potato Leafroll Virus(PLRV) And Its Vectors, Myzus Persicae Sul. And -22- 22 Macrosiphum Euphorbiae Thom.
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| 239 | 1998 | Determination Of The Effect Of Nutrient Sources On Enhancement In Western Kenya
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| 240 | 1998 | Bean Research In Western Kenya: Lessons And Experiences
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| 241 | 1998 | Bean Research In Western Kenya: Lessons And Experiences. 2nd Biennial Crop Protection Conference
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| 242 | 1998 | Interaction Between Bean Stem Maggot And Bean Root Rot And Soil Fertility.
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| 243 | 1998 | A Survey Of Insect Pests And Farmers' Control Measures On Snapbeans In Kirinyaga District, Kenya.CIAT Publication No. 23.
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| 244 | 1998 | Major Diseases And Insect Of Vegetable Crops Under Intensive Productions Systems: Kibwezi Experience.
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| 245 | 1998 | Determination Of The Effects Of Nutrient Sources On Enhancement Of Crop Tolerance To Bean Root Rot And Bean Stem Maggot In Western Kenya.
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| 246 | 1997 | Growing Of Climbing Beans(Maharagwe Tambarizi) In Kenya.
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| 247 | 1997 | Management Of Bean Root Rots And Bean Stem Maggot In The African Highlands. AHI Coordinating Office, ICRAF,
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| 248 | 1997 | Relationship Between Bean Stem Maggot, Bean Root Rots And Soil Fertility: Literature Review With Emphasis On Research In Eastern And Central Africa
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| 249 | 1997 | The Effect Of Maize Stem Borers Infestation On Yield Of Maize.
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| 250 | 1996 | Incidence And Severity Of Bean Stem Maggot In Western Kenya.
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| 251 | 1996 | Integrated Pest Management On Beans. Lecture For Integrated Management Of Crop Pests Course Organized For Agriculturalists From Tanzania By Icipe,
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| 252 | 1996 | Selective Use And Application Of Chemical Pesticides In Pest Management.
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| 253 | 1996 | Evaluation Of Some Promising Potato Clones For Tolerance To Potato Leafroll Virus(PLRV) And For Resistance To Its Vectors Myzus Persicae Sulzer And Macrosiphum Euphorbiae Thomas. Af
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| 254 | 1996 | Efficacy Of The Current Insecticidal Control Of Major Pests Of French Beans In Central Kenya
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| 255 | 1995 | Assessment Of Beanfly Incidence, Damage And Losses In Subsistence Farmers'fields In Kenya.
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| 256 | 1995 | Review On Weeds, Pests, Diseases, Nutrition And Nutrient Disorders On Crops In Kenya
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| 257 | 1995 | Crop Protection By Bean Farmers. Kenya Farmer,
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| 258 | 1993 | Survey Of The Pests And Current Control Measures Of Major Pests Of French Beans
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| 259 | 1993 | Evaluation Of Bean Cultivars At Different Stages Of Growth For Resistance To Beanflies.
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| 260 | 1992 | Review Of Agricultural Entomology Research Activities In Kenya
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| 261 | 1992 | A Review On Pests Of Grain Legumes
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| 262 | 1992 | Sweet Potato Insect Pests: Identification And Mode Of Damage
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| 263 | 1991 | Evaluation Of Common Beans Cultivars For Resistance To Beanflies In Single Plantings At Different Seasons
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| 264 | 1991 | Insects Associated With The Potato Crop In Kenya
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| 265 | 1991 | Evaluation Of Common Beans Cultivars For Resistance To Beanflies In Single Plantings At Different Seasons
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| 266 | 1991 | Prevention And Management Of Exotic Insect Pests On Plants In Kenya. African Association Of Insect Scientists (AAIS)
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| 267 | 1990 | Monitoring And Control Of Aphids On Potatoes (Solanum Tuberosum L.).
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| 268 | 1990 | Beanfly Infestation On Common Bean
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The population patterns of eggs, larvae and puparia on bean plants and leaf punctures made by adults were investigated during cropping (March-July; October-January) and noncropping (July-October) seasons at two sites in Kenya. Bean grown in noncropping seasons had more leaf punctures, eggs, larvae and puparia than bean grown in cropping seasons. Bean sown in noncropping seasons attracted unusually high beanfly populations from surrounding weeds as well as previous crops. Under field conditions, the Onhiomyi beanfly species, sencerella Greathead and 0. phasepli Tryon, bean infested plants in all seasons. Both species normally oviposited in punctures on the leavesbut 0. spencerella also oviposited in the stems of bean seedlings.
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| 269 | 1990 | Review On Insect Survey And Host Plant Resistance Evaluation Methods On Sweet Potato Production
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| 270 | 1990 | Beanfly Infestation On Common Beans (Phaseolus Vulgaris L.) In Kenya
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| 271 | 1990 | Beanfly Infestation On Common Beans (Phaseolus Vulgaris L.) In Kenya
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| 272 | 1989 | Susceptibility Of Eight Potato Cultivars To Myzus Persicae Sulzer In The Greenhouse
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| 273 | 1989 | Susceptibility Of Eight Potato Cultivars To Myzus Persicae Sulzer In The Greenhouse
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| 274 | 1987 | Potato Virus Vectors And Their Control In Kenya. Cip Integrated Pest Management Course, Nairobi.
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