Department of Crop Science
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©Karatina University
Recent Submissions
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Identification of Maize Leaf Diseases Based On AlexNet and ResNet50 Convolutional Neural Networks
(2023-08-30)Maize crop protection is crucial for global food security, requiring accurate disease identification. In Kenya, farmers rely on subjective visual analysis of symptomatic leaves, which is time-consuming and prone to ... -
Effect of Intercropping on Potato Bacterial Wilt Disease and Tuber Yield in Kenya
(Karatina University, 2023-12-06)Potato (Solanum tuberosum L.) is a major tuber crop in Kenya, whose productivity is heavily impaired by bacterial wilt disease, caused by Ralstonia solanacearum (Smith). Existing management strategies have not been effective, ... -
The Role of Farmer Field Schools Approach in Improving Tea Production among Smallholding in Kenya.
(2015)Tea production, processing and marketing in Kenya is under management of two sectors. The two sectors include; Kenya Tea Development Agency which manages approximately six hundred thousand small scale farmers and multi-nationals ... -
Enhancement of bacterial wilt resistance and rhizosphere health in tomato using bionanocomposites
(Springer, 2016-12)Biological control agents are useful components in the enhancement of plant disease resistance and improvement of soil properties. Effect of biological control agents (BCAs) as a disease control method in plants is hampered ... -
Control of Bacterial Wilt in Tomato Using Chitosan Intercalated with Tea Extracts.
(OJS/PKP, 2022-04-21)In this study, tea extracts were intercalated in chitosan gel to enhance the inhibitory effect of the complex on bacterial wilt in tomato. The disease caused by Ralstonia solanacearum can result in 100% crop loss under ... -
Management Strategies of Prosopis juliflora in Eastern Africa: What Works Where?
(2024-04-22)Abstract: Prosopis juliflora is a shrub/tree originating from the Americas. Since its introduction for fuel wood afforestation into eastern Africa, it has been invading crop- and rangelands with negative effects on the ... -
Seasonality and potential of Ceranisus menes for control of thrips on French beans
(Sida, 2008-10-22)- -
Home Sustainable Management of Invasive Pests in Africa Chapter Influence of Predatory Mites, Phytoseiulus longipes Evans. on the Within-Plant Diurnal Migration and Distribution of the Red Spider Mite, Tetranychus evansi, Baker and Pritchard on African Nightshade, Solanum scabrum
(Springer, 2020-07-14)Understanding the within-plant diurnal migration and distribution of the Red spider mite, Tetranychus evansi Baker and Pritchard, in the presence of the predatory mite Phytoseiulus longipes Evans, on African nightshade, ... -
Evaluation of biological attributes of a native egg parasitoid, Trichogrammatoidea sp. nr. lutea (girault), kenyan accessions
(2012-09-10)Objective: This study was carried out to evaluate the biological attributes that is, parasitism, adult progeny production, and sex ratio of 21 strains of a native egg parasitoid Trichogrammatoidea sp. nr. lutea Girault ... -
Biological control agents of aphids (Homoptera: Aphididae) on potatoes (Solanum tuberosumL) in Kenya
(2010)A field survey was conducted in four major potato growing areas in Kenya (Kiambu, Nyandarua, Meru and Molo Districts) during January and February, 2008 (short rains crop) and June 2008 (long rains crop) to determine the ... -
The Critical Onion Growth Stages For Selective Protection From Thrips Tabaci Lindeman (Thysanoptera:Thripidae) Infestation
(Kenya Agricultural Research Institute, Nairobi (Kenya), 2006-01)Field trials were conducted during 2000-2001 at KARIandrsquo;s Mwea-Tebere and Kiboko farms to establish the effect of onion thrips, Thrips tabaci Lindeman on onion bulb yields and to identify the critical onion growth ... -
Effect of temperature on the development of Orius albidipennis Reuter, a predator of the African legume flower thrips, Megalurothrips sjostedti Trybom
(2002)The effects of temperature on the development of Orius albidipennis (Reuter) (Hemiptera: Anthocoridae), reared on its prey, Megalurothrips sjostedti (Trybom) (Thysanoptera: Thripidae), were studied in the laboratory. Nymphal ... -
Scope for genetic enhancement of the parasitisation potential of four native strains of Trichogrammatoidea sp. nr. lutea Girault (Hymenoptera: Trichogrammatidae
(Taylor & Francis, 2007-09)In response to emerging interest in commercial mass production of Trichogramma for Helicoverpa armigera biocontrol in eastern Africa, laboratory experiments were undertaken to assess the scope for genetic enhancement of ... -
HOST-PLANT ACCEPTANCE, FECUNDITY AND LONGEVITY OF Tetranychus evansi (Acari: Tetranychidae) ON SELECTED TOMATO ACCESSIONS
(2009)Seventomato (Lycopersicon sp.) accessions wereevaluated for their resistance to thetomato red spider mite, Tetranychus evansi Baker and Pritchard, in the laboratory. Data recorded was: (i) trichome density and ... -
Antimicrobial acitivity of extracts from Tephrosia vogelii Hook F.
(2007-01-29)The dichloromethane extracts of the root and leaf of Tephrosia vogelii Hook F. (Family: Papilionaceae) grown in Kenya, were subjected to antimicrobial assays against Staphylococcus aureus, Escherichia coli and Fusarium ... -
Article Navigation JOURNAL ARTICLE Evidence for Potential of Managing Some African Fruit Fly Species (Diptera: Tephritidae) Using the Mango Fruit Fly Host-Marking Pheromone
(Entomological Society of America, 2012-12-01)We investigated conspecific and heterospecific oviposition host discrimination among four economically important fruit fly pests of mango in Africa (Ceratitis capitata, Wiedemann; C. fasciventris, Bezzi; C. rosa, Karsch, ... -
Leveraging Mobile Phones in Crop Pests and Disease Surveillance-Perspectives of Farmers in Kenya.
(Corpus publishers, 2023)Agriculture plays a crucial role in ensuring food security and employment in Kenya. However, farmers in the country have been struggling with low crop yields due to pests and diseases. To address this issue, mobile-based ...
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