Working Document Series Open Access Agronomic performance and carotenoid content of Kenyan yellow-fleshed cassava clones R. Edema · J. Kamau · P. Njenga · G. Ooko Vitamin A deficiency is common in Kenya, and is common among populations that depend on cassava as their main staple. Clonal evaluation of 324 locally developed yellow-fleshed cassava clones was carried out in two sites, Thika and Kiboko l… RUF-39352 2018 CC BY 4.0 28 Jul 2021
Working Document Series Open Access The interaction between host plant resistance and biological control presents opportunities for plant breeders in Africa’s integrated pest management programs J. Amoah · R. Edema · J. Karungi · R. Kityo +3 more The concept of integrated pest management (IPM) presents a holistic approach to management of pests, optimizing actions associated with at least two pest management tactics without ecological backlash. However, efficient integration of IPM… RUF-39111 2018 CC BY 4.0 1 Mar 2021
Working Document Series Open Access Enhancing climate resilience of cropping systems: A synopsis of research activities by crop scientists at University of Nairobi G.N. Chemining’wa · O.M. Kitonyo Climate change is associated with rising temperatures, elevated carbon dioxide, variable rainfall patterns and frequent droughts, reduced soil carbon and mineral nutrients, and increased influx of pests and diseases, in addition to adverse… RUF-39096 2018 CC BY 4.0 1 Mar 2021
Working Document Series Open Access Comparative effects of soybean, grain amaranth (Amaranthus spp) and nitrogen on Striga (Striga hermonthica) and maize yield in western Kenya W. K. Ngetich · E. K. Ronoh · V. K. Rotich · C. Serem Western Kenya, the area considered the grain basket of the country, is heavily infested by Striga, reducing maize yields by up to 30-100%. On-farm trials were conducted in two cropping seasons between August 2014 to July 2015 at Ugunja, Si… RUF-38623 2018 CC BY 4.0 4 Sep 2020
Working Document Series Open Access Influence of Niger plant (Guizotia abyssinica l.) on growth and development of common beans (Phaseolus vulgaris) O. A. Auma · L. Ngode · L. M. Oimbo Plants affect other plants growing in their vicinity either positively or negatively by producing exudates known as secondary metabolites. These secondary metabolites, also known as allelochemicals, can be harnessed and utilized in control… RUF-38619 2018 CC BY 4.0 4 Sep 2020
Working Document Series Open Access Effect of sowing date and genotypes on some yield components of kenaf S. I. Idres · S. A. Yousif A study was conducted at the University of Gezira in Wad Medani experimental farm in Sudan during May - September 2014 to determinate the optimum date for sowing kenaf (Hibiscus cannabinus L.). Two kenaf genotypes, i.e., GS and RS were use… RUF-38613 2018 CC BY 4.0 4 Sep 2020
Working Document Series Open Access Characterization of tomato accessions for breeding research in Kenya F. K. Kathimba · P. M. Kimani · L. M. Kiriika · R.D. Narla Understanding the phenotypic traits of germplasm through cultivation and assessing the morphological and agronomic characters facilitates selection of suitable parents for a breeding programme. Although tomato is the leading vegetable crop… RUF-38610 2018 CC BY 4.0 4 Sep 2020
Working Document Series Open Access Evaluation for seed yield and related traits among ecotypes of Cenchrus ciliaris L. G. Chemining’wa · E. C. Kirwa · W. N. Mnene · E. K. Ngugi Cenchrus ciliaris is widely promoted as a choice grass species for reseeding Arid and Semi-arid Lands (ASALs). Nine ecotypes of C. ciliaris collected from selected sites in Kenyan ASALs were evaluated for seed yield and related traits in t… RUF-38602 2018 CC BY 4.0 4 Sep 2020
Working Document Series Open Access Effect of low tannin sorghum on sensory characteristics of layer eggs and broiler meat M.G. Gicheha · L. Kabuage · J.N. Kinyuru · J. N. Mburu +2 more The sensory characterization of food and food products is necessary to measure its consumer acceptance as it rates the preference of consumer with regards to the intervention made. low tannin sorghum is important as a feed but its acceptab… RUF-38568 2018 CC BY 4.0 19 Aug 2020
Journal articles Open Access First record of an entomopathogenic fungus of tomato leafminer, Tuta absoluta (Meyrick) in Tanzania Patrick A. Ndakidemi · M. Chacha · E. R. Mbega · M. Mtambo +2 more Tuta absoluta (Meyrick) is a destructive pest causing adverse environmental and economic effects globally. Management of T. absoluta by synthetic chemicals is of diminutive achievement due to resistance trick of the pest. Harnessing of bio… RUF-38560 2019 CC BY 4.0 17 Aug 2020
Working Document Series Open Access Effects of land use types and seasons on species diversity and abundance of dung beetles in Eldoret, Kenya F. Ayuke · H. Churu · N. Karanja · K. Odhiambo Dung beetles are crucial in livestock systems due to their contribution to dung removal, nutrients cycling, carbon sequestration and sustainable pasture production. There are limited studies to elucidate abundance and species diversity acr… RUF-38544 2018 CC BY 4.0 13 Aug 2020
Working Document Series Open Access Effect of biochar on water use efficiency of legume fodder Dolichos lablab (Lablab purpureus L.) Sweet in semi-arid and arid soils of Mwea and Bura, Kenya C. C. K. Gachene · S. O. Keya · T. J. Njoka · E. A. Ouna +1 more Production of legume fodder in arid and semi-arid regions remains a problem due to constraints of low soil moisture and limited farming technologies that can improve water retention in soil. Mwea and Bura soils are vertisols, compacted, wi… RUF-38523 2018 CC BY 4.0 13 Aug 2020
Working Document Series Open Access Using system of rice intensification practices to mitigate climate change effects on rice production in Western Kenya E. C. Kipkorir · E. M. Mugalavai · C. K. Songok · P. O. W Webi The increasing impacts of climate change and the demand for food threaten the productive and service capacity of agro-ecosystems. Consequently, adoption of irrigation alternatives that enhance water use efficiency in crop production is vit… RUF-38509 2018 CC BY 4.0 12 Aug 2020
Working Document Series Open Access Characterizing cassava marketing value chain in Kenya: A review D. Kilalo · W. O. Kosura · A. W. Mwang’ombe · H. Nyanganga +1 more This paper reviews the cassava value chain with an aim of characterizing the value chain by focusing on the marketing part of the value chain, the actors, and marketing channels. The data used in this review were obtained from secondary so… RUF-38489 2018 CC BY 4.0 12 Aug 2020
Journal articles Open Access Micropropagation of Livingstone Potato (Plectranthus esculentus N.E.Br) T. C. Chitendera · G. T. Kujeke · R. T. Masekesa · A. Matikiti +3 more Livingstone potato (Plectranthus esculentus N.E.Br) is an underutilised indigenous root vegetable grown by communal farmers in the eastern provinces of Zimbabwe. It is vegetatively propagated using unimproved retained tubers from the previ… RUF-38331 2020 CC BY 4.0 24 Jun 2020
Journal articles Open Access Trench layering using indole-3-butyric acid and local organic substrate mixtures to enhance rooting and survival of apple rootstocks R. Agaba · F. Babweteera · S. Balaba Tumwebaze · Nelson Turyahabwe +1 more Apples (Malus domestica) were introduced to enhance nutrition and improve livelihoods of famers in highlands of Uganda. However, adoption and commercialisation of apples is largely constrained by low quality rootstocks due to poor rooting … RUF-37401 2018 CC BY 4.0 10 Apr 2018
Theses & Dissertations Open Access Simulating development, biomass and yield of tef (Quncho variety) using FAO’s AquaCrop model: a case study in Mekelle area Haileselassie Hailay The experiment was carried out in the northern Ethiopia at Mekelle University Main campus in 2012. The objectives were to evaluate the effect of fertilizer and water level on yield and yield component as well as to simulate, development, b… RUF-37392 2013 CC BY 4.0 21 Mar 2018
Journal articles Open Access Exploring optimal farm resources management strategy forQuncho-teff (Eragrostis tef (Zucc.) Trotter) using AquaCrop model Haileselassie Hailay Teff is a major staple food crop in Ethiopia. Moisture and soil fertility are the two major factors limitingteff yield. Studies were conducted across three sites in Ethiopa [Mekelle (MK) in 2012 and 2016, Ilala(IL) in 2012 and Debrezeit (D… RUF-37391 2016 CC BY 4.0 20 Mar 2018
Journal articles Open Access Influence of climate variability and length of rainy season on crop yields in semiarid Botswana Jimmy Byakatonda · Piet K. Kenabathob · D.B. Moalafhib · B.P. Paridaa Climate variability and change is expected to affect agricultural productivity among other sectors. Studying the influence of this variability on crop production is one measure of generating climate change resilience strategies. In this st… RUF-37269 2017 CC BY 4.0 9 Nov 2017
Journal articles Open Access Effect of harvesting time on groundnut yield and yield components in Northern Mozambique Emmanuel Jnr. Zuza Groundnut (Arachis hypogaea L.) is one of the most important legume crop in Mozambique which is grown for food as well as cash. It’s an indeterminate growth habit and below the ground nature of fruiting makes it difficult to determine the … RUF-37216 2017 CC BY 4.0 29 Sep 2017
Journal articles Open Access Soil fertility management and impact on sweet potatoes - soybeans growing in Makunga (Kakamega) and (Kibargoi) Elgeiyo Marakwet counties Carolyne Jepkemboi · P.C. Kale · S.J. Kebeney · J.K. Kitilit Sweet potato is a perennial storage tuber crop grown as a food and/or cash crop. Soybean is a multipurpose crop grown for human food, livestock feed, soil fertility improvement, income generation and oil production among the smallholder fa… RUF-36751 2017 CC BY 4.0 14 Aug 2017
Books and Book Chapters Open Access Safflower production Vallantino Emongor · Otsoseng Oagile Safflower is a multipurpose oil seed crop that can be used for cooking oil production, as vegetable crop, cut flower, forage crop for both forage and animal feed, industrial crop for dye production and medicinal crop. Safflower is a drough… RUF-36745 2017 CC BY 4.0 14 Aug 2017
Journal articles Open Access Potential of native rhizobia in enhancing nitrogen fixation and yields of climbing beans (Phaseolus vulgaris L.) in contrasting environments of Eastern Kenya Jacinta M. Kimiti · Gilbert Koskey · John Maingi · Simon W. Mburu +2 more Climbing bean (Phaseolus vulgaris L.) production in Kenya is greatly undermined by low soil fertility, especially in agriculturally prolific areas. The use of effective native rhizobia inoculants to promote nitrogen fixation could be benef… RUF-36665 2017 CC BY 4.0 7 Apr 2017
Theses & Dissertations Open Access Characterization of rainfall and temperature variability and their impact on teff [Eragrostis tef (zucc.)] production at Kersa District of Jimma Zone, Ethiopia Gemechu Raga Osena Climate variability is affecting the whole world and its threat is greater in Ethiopia because of its less adaptive capacity and deepened poverty.This study was there fore designed to investigate the impact of rainfall and temperature vari… RUF-36609 2016 CC BY 4.0 16 Mar 2017
Theses & Dissertations Open Access Effect of drip irrigation on the production and economic returns of sorghum (Sorghum bicolor) in semi arid areas of Tanzania Athuman Juma Mahinda Field trials were conducted in semi arid area of Dodoma, central Tanzania with the aim of assessing the effect of three drip irrigation watering regimes on the production and economic returns of sorghum (Sorghum bicolor). The irrigation tr… RUF-36606 2014 CC BY 4.0 15 Mar 2017
