School of Agriculture and Food Security: Recent submissions
Now showing items 301-320 of 437
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An Analysis of Causality between Tea Exports and its Determinants in Rwanda
(East Africa Research Papers in Economics and Finance, 2018)East Africa Research Papers in Economics and Finance is a series linked to the collaborative PhD program in Economics and Management among East Africa national universities. The program was initiated and is coordinated by ... -
An agronomic and economic evaluation of integrated use of Calliandra callothyrsus and maize stover with urea in western Kenya
(2014)The agronomic effectiveness of integrating organic and inorganic nutrient sources has been demonstrated in Kenya but economic analysis is often lacking in such studies thus denying farmers the ... -
Response of the African nightshade to phosphate fertilizer application in Western Kenya
(Scholars Research Library, 2013)Although the African nightshade is increasingly becoming an important vegetable in Kenya, the consumer demand has not been met due to its low yields occasioned by lack of fertilizer use. The general belief is that traditional ... -
Effects of organic and inorganic materials on soil acidity and phosphorus availability in a soil incubation study
(Hindawi, 2012)We tested the effects of two organic materials (OMs) of varying chemical characteristics that is, farmyard manure (FYM) and Tithonia diversifolia (tithonia), when applied alone or in combination with three inorganic P ... -
Comparative effects of lime and organic materials on selected soil chemical properties and nutrient uptake by maize in an acid soil
(Scholars Research Library, 2011)The use of phosphate fertilizers and lime to mitigate P deficiencies and Al toxicities in Kenya has not been effective due to their high cost. Organic materials (OMs) are therefore being tested as cheaper alternatives but ... -
Effect of organic and inorganic phosphorus sources on maize yields in an acid soil in western Kenya
(Springer Netherlands, 2010-04-01)Springer Netherlands -
Effects of combining organic materials with inorganic phosphorus sources on maize yield and financial benefits in western Kenya
(Cambridge University Press., 2009-10-09)Due to escalating costs of imported fertilizers, there is renewed interest in the use of local nutrient resources in managing soil fertility in Kenya. We tested the effect of two organic materials, farmyard manure (FYM) and ... -
Effect of Sources of Phosphorus on Phosphorus Sorption in Cambisols and Ferralsols of Western Kenya
(2015-02-02)The influence of two organic materials (OMs); Tithonia and FYM and inorganic materials; triple superphosphate (TSP) and Minjingu phosphate rock (MPR) and Busumbu phosphate rock (BPR), when applied alone or in combination, ... -
Management of organic inputs in East Africa: A review of current knowledge and future challenges
(Scholars Research Library, 2011)Organic inputs in Africa are used mainly as sources of crop nutrients but most of the ones available on the farms such as crop residues, animal manures and composts are of low quality and insufficient quantity. Proper ... -
Response of Maize to Organic and Inorganic Sources of Nutrients in Acid Soils of Kenya
(2014-02-25)Maize yield in Kericho County, Kenya is limited by infertile acidic soils. The effect of inorganic sources of nutrients and amendments; triple superphosphate (TSP), calcium ammonium nitrate (CAN) and lime, were compared ... -
The effect of minjingu phosphate rock and triple superphosphate on soil phosphorus fractions and maize yield in Western Kenya
(Hindawi, 2014)We tested the effects of triple superphosphate (TSP) and Minjingu phosphate rock (MPR), when applied at phosphorus (P) rates of 50 or 250 kg P ha−1 in a factorial combination with urea or Tithonia diversifolia green manure ... -
Effects of lime and fertilizer on soil properties and maize yields in acid soils of Western Kenya
(Academic Journals, 2018-03-29)Many soils in Western Kenya are acidic and deficient in nitrogen and phosphorus. Acidity hinders crop responses to fertilizers applied to remedy nutrient deficiencies. The common liming materials used to ameliorate acidity ... -
Effects of Tithonia diversifolia, farmyard manure and urea, and phosphate fertiliser application methods on maize yields in western Kenya
(2015-04-21)Maize production in western Kenya is often limited by deficiencies of nitrogen and phosphorus. We assessed the effectiveness of Tithonia diversifolia green manure (tithonia), farmyard manure (FYM) and urea as sources of ... -
Recent advances towards understanding and managing Kenyan acid soils for improved crop production
(African Journal of Agricultural Reseach, 2014-06-18)This review focused on the efforts made to understand and manage Kenyan acid soils by use of inorganic, organic materials (OMs) and crop germplasms tolerant to soil aluminium (Al) toxicity and/or low soil available phosphorus ... -
Comparison of effects of phosphorus sources on soil acidity, available phosphorus and maize yields at two sites in western Kenya
(Taylor & Francis, 2013-03-01)The effects of farmyard manure (FYM), Tithonia diversifolia (tithonia) and urea when applied alone or in combination with Minjingu phosphate rock (MPR), Busumbu phosphate rock (BPR) or triple superphosphate (TSP) on soil ... -
Symbiotic efficiency of native rhizobia nodulating common bean (Phaseolus vulgaris L.) in soils of Western Kenya
(Hindawi, 2014)This study was conducted to determine the abundance and symbiotic efficiency of native rhizobia nodulating common bean in Kisumu and Kakamega, Kenya. Soil sampling was carried out in three farms that had been used for ... -
Effect of nitrogen sources on the yield of common bean (Phaseolus vulgaris) in western Kenya
(Taylor & Francis, 2018-08-09)Depletion of soil nutrients due to continuous cultivation without adequate external fertilization is one of the challenges facing many smallholder farmers in western Kenya. This study was conducted to assess the effects ... -
Genetic diversity of symbiotic bacteria nodulating common bean (Phaseolus vulgaris) in western Kenya
(Public Library of Science, 2018-11-15)Biological nitrogen fixation (BNF) in legumes plays a critical role in improving soil fertility. Despite this vital role, there is limited information on the genetic diversity and BNF of bacteria nodulating common bean ... -
Response of Sorghum (Sorghum bicolor (L.) Munch) and Chemical Characteristics of Soil to Organic and Inorganic Fertilizers on Kenyan Lower Midlands Acid Soil
(International Journal of Plant & Soil Science, 2019-05-17)Soil acidity, low level of nitrogen (N), phosphorus (P) and soil organic matter are major constraints to sorghum production in Kenya. We investigated the effect of farmyard manure (FYM) and combined application of inorganic ... -
NITROGEN SOURCES AND THEIR EFFECTS ON NITROUS OXIDE EMISSION AND MAIZE YIELD IN WESTERN KENYA.
(2019-09-01)This study assessed the effect of applying inorganic or organic sources of nitrogen, or their combination, on N2O emission, maize yield and Nitrogen Use Efficiency (NUE) at Nyakach, a lowland and Soin, a highland in western ...
