Journal Articles: Recent submissions
Now showing items 2081-2100 of 29892
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Controlling soil erosion in smallholder potato farming systems using legume intercrops
(University of Nairobi, 2019)Competition for nitrogen (N) and phosphorous (P) under potato-based intercropping systems decreases the level of nutrients available for potato and subsequently influences nitrogen and phosphorous use efficiency. A field ... -
Nitrogen and phosphorous uptake by potato (Solanum tuberosum L.) and their use efficiency under potato-legume intercropping systems
(University of Nairobi, 2018)Competition for nitrogen (N) and phosphorous (P) under potato-based intercropping systems decreases the level of nutrients available for potato and subsequently influences nitrogen and phosphorous use efficiency. A field ... -
Optimizing yield and economic returns of rain-fed potato ( Solanum tuberosum L.) through water conservation under potato-legume intercropping systems
(University of Nairobi, 2018)Even though potato (Solanum tuberosum L.)-based intercropping systems are widely practised in developing countries, only a few studies have focused on legumes as the companion intercrops. This study was conducted to assess ... -
Potato-legume intercropping on a sloping terrain and its effects on soil physico-chemical properties
(University of Nairobi, 2019)Aims To assess the effects of potato-legume intercropping on selected soil physical and chemical properties after four consecutive growing seasons (from the short rains in 2014 to long rains 2016). Methods The experiment ... -
Combining Ability for Drought Tolerance in Upland Rice Varieties at Reproductive Stage
(University of Nairobi, 2017)Rice is an important food crop for human population ranking second among the mostly consumed cereal grains worldwide. Upland rice production is greatly constrained by drought stress resulting from rainfall variation patterns. ... -
Identification Of Resistance Sources To Wheat Stem Rust From Introduced Genotypes In Kenya
(University of Nairobi, 2017)Stem rust Puccinia graminis Pers. f. sp. tritici of wheat is the most important disease in Kenya. Emergence of race Ug99 and other variants virulent to host resistance genes including Sr31 has rendered 95% of Kenyan cultivars ... -
Viability and Dormancy of Rice Seeds after Storage and Pre-Treatment with Dry Heat and Chemical Agents
(University of Nairobi, 2017)Inappropriate seed packaging and seed dormancy affects seed quality and consequently leads to reduced crop stand, low seedling vigour and reduced yields. The objective of the study was to determine the effect of seed ... -
Assessment of Farmers Maize Production Practices and Effect of Triple-Layer Hermetic Storage on the Population of Fusarium Spp. and Fumonisin Contamination
(University of Nairobi, 2016)Abstract Fumonisin contamination of maize by Fusarium spp. is a major risk in food security, human and animal health. A study was carried out in Kaiti District, Makueni County in Kenya, to assess the effectiveness of ... -
Effect of Soil Fertility and Intercropping on the Incidence and Severity of Root Rot Diseases of Common Bean (Phaseolus vulgaris L.)
(University of Nairobi, 2017)High occurrence of root rots is attributed to continuous and inappropriate cropping systems, low soil fertility levels, low moisture in soil, use of farm saved seeds and use of root rot susceptible bean (Phaseolus vulgaris ... -
Efficacy of Plant Extracts and Antagonistic Fungi in Managing Tomato Pests and Diseases under Field Conditions
(University of Nairobi, 2017)The objective of this study was to evaluate the effectiveness of plant extracts and fungal antagonists in managing pests and diseases of tomato under field conditions. The extracts and the antagonists were evaluated for ... -
The use of near infrared transmittance kernel sorting technology to salvage high quality grain from grain downgraded due to Fusarium damage
(University of Nairobi, 2017)The mycotoxins associated with specific Fusarium fungal infections of grains are a threat to global food and feed security. These fungal infestations are referred to as Fusarium Head Blight (FHB) and lead to Fusarium ... -
Effect of Time after Incorporation of Lablab Green Manure on Root Rot Pathogens and Establishment of Common Bean (Phaseolus vulgaris L.)
(University of Nairobi, 2018)Green manure incorporation is important for restoration of soil quality, particularly buildup of organic matter and supply of nutrients to plants. However, undecomposed plant residues reduce crop establishment and plant ... -
Effect of Lablab Green Manure on Population of Soil Microorganisms and Establishment of Common Bean (Phaseolus vulgaris L.)
(University of Nairobi, 2018): Green manures improve soil health and fertility but application of undecomposed lablab residues lead to low crop establishment. The study was carried out to determine the effect of green manure on microbial population ... -
Quality of Farm Saved Maize (Zea mays l.) Seeds and its Effect on Field Establishment
(University of Nairobi, 2018)– Farmer saved seed consist of inappropriate varieties, infected seeds of poor germination potential resulting in low seedling vigor, crop stand and high incidence of diseases leading to poor yield. The study was conducted ... -
Efficiency of Aphid and Thrips Vectors in Transmission of Maize Lethal Necrosis Viruses
(University of Nairobi, 2018)Maize lethal necrosis disease occur in major growing regions of Kenya, causing losses of up to 100% estimated at 50 million US$ in 2014/15. The study was undertaken to evaluate the efficiency of thrips and aphids in ... -
Combining ability of resistance to pod shattering and selected agronomic traits of soybean
(University of Nairobi, 2018)Eight parents Nyala and SB-8, SB-25, SB-93, SB-19, 915/5/12, 835/5/30 and SB-98 were crossed in a diallel mating scheme to generate 28 F1 progenies in a greenhouse at Kabete, University of Nairobi. The F1 and their parents ... -
Effect Of Intercropping Maize-Soybean On Grain Quality Traits In Kenya
(University of Nairobi, 2017)An study was carried out in Kenya to assess the suitability of three promiscuous soybean varieties (SB19, GAZELLE and TGX1990-5F) intercropped with Maize (Duma 43). A randomised complete block design was used replicated ... -
Effect of Intercroping Maize-Soybean on Grain Quality Traits in Kenya
(University of Nairobi, 2018)An experiment was conducted in Kenya to determine the effect of intercropping maize-soybean on soybean grain quality traits. A randomized complete block design replicated three times with seven treatments was used. ... -
Effect of storage methods of cassava planting materials on establishment and early growth vigour
(University of Nairobi, 2018)Cassava (Manihot esculenta Cruntz.) establishment depends on quality of planting materials. The experiment was done to determine the effects storage and variety on crop establishment and early growth vigour. Karembo and ... -
Integration of Seed Dressing, Bio-pesticides and Intercropping to Reduce Pesticide Use in Snap Bean Production
(University of Nairobi, 2018)Insect pests remain a major constratint in the production of snap beans and farmers mainly rely on synthetic chemical pesticides to manage the insect pests and diseases. However, the introduction of maximum residue levels ...