Browsing Department of Soil Science by Title
Now showing items 1-20 of 36
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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 ... -
Comparative analysis of immediate and residual effects of farmyard manure, triple superphosphate, and lime on maize yields in western Kenya
(African Journal of Agricultural Research, 2023-10-26)The effects of farmyard manure (FYM) and triple superphosphate (TSP) as sources of phosphorus, when applied with or without lime, on selected soil chemical properties, and the initial and residual maize yields, were ... -
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 ... -
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 ... -
Depletion of phosphate rock reserves and world food crisis: Reality or hoax?
(African Journal of Agricultural Research, 2020)Phosphate rock (PR) deposits are the major source of phosphate (P) fertilizers for soil fertility replenishment. The demand for P fertilizers in the year 2014 was 42,706,000 tons and was expected to reach 46,648,000 tons ... -
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 ... -
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 ... -
Effect of nitrogen sources on the yield of common bean (Phaseolus vulgaris) in western Kenya
(2018)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 ... -
Effect of organic and inorganic phosphorus sources on maize yields in an acid soil in western Kenya
(Springer Netherlands, 2010-04-01)Springer Netherlands -
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, ... -
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 ... -
Effects of cutting position of rose rootstock cultivars on rooting and its relationship with mineral nutrient content and endogenous carbohydrates
(Elsevier, 2017-11-18)The stem cuttings for propagating rose rootstocks are usually obtained from the shoots on the mother stock irrespective of the position. However, adventitious root formation may be influenced by the cutting position. ... -
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 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 ... -
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 ... -
Effects of Vermicompost, Tithonia Green Manure and Urea on Quality of Swiss Chard (Beta Vulgaris L. Var. Cicla L.) in Kenya
(Canadian Center of Science and Education, 2021)Swiss chard (Beta vulgaris L. var. cicla) is a popular vegetable because it is nutritious, robust, easy to grow. It requires regular applications of nitrogen, which causes accumulation of oxalates and nitrates within the ... -
Evaluation of crop arrangement and phosphorus rate on performance of maize-common bean intercropping in western Kenya
(Archives of Agriculture and Environmental Science, 2020)The effect of phosphorus (P) rate and crop arrangement on the performance of component crops in maize-bean intercropping systems was investigated at two sites; Malanga and Bugeng’i in western Kenya. A split plot design ... -
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 ... -
Influence of Lime and Phosphorus Application Rates on Growth of Maize in an Acid Soil
(HINDAWI, 2017)The interactive effects of lime and phosphorus on maize growth in an acid soil were investigated in a greenhouse experiment. A completely randomized design with 12 treatments consisting of four lime levels, 0, 2, 10, ... -
Influence of plant density and nitrogen application on growth and quality of sweet pepper (capsicum annuum) in Uasin Gishu county
(Research Gate, 2020)Sweet pepper an important export in Uasin Gishu had been facing a problem of rejection at the international market due to failure to meet the specified quality standards. The field experiment was conducted during the ...
