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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Comparison of effects of phosphorus sources on soil acidity, available phosphorus and maize yields at two sites in western Kenya
Archives of Agronomy and Soil Science, Volume 59, No. 3, Year 2013
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Description
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 acidity, P availability, maize yields and financial benefits were evaluated at Bukura and Kakamega in western Kenya. A reduction in exchangeable acidity and Al was observed in most tithonia- and FYM-treated soils, but not with inorganic P sources when applied in combination with urea. The effectiveness in increasing available soil P followed the order; TSP > MPR > BPR among inorganic P sources, and FYM > tithonia among organic materials at both sites. At Bukura, a site higher in both available P and Al saturation compared with Kakamega, maize did not respond to inorganic P sources applied in combination with urea. Maize, however, responded when inorganic P sources were applied in combination with FYM or tithonia at this site. At Kakamega, maize responded to TSP but not to MPR or BPR when applied with urea. Application of TSP in combination with tithonia gave the highest maize yields at both sites. Of the tested technologies, only FYM when applied alone at Bukura was economically attractive. © 2013 Copyright Taylor and Francis Group, LLC.
Authors & Co-Authors
Opala, Peter Asbon
Kenya
Kabianga University College
Okalebo, John Robert
Kenya, Eldoret
Moi University
Othieno, Calleb O.
Kenya, Eldoret
Moi University
Statistics
Citations: 21
Authors: 3
Affiliations: 2
Identifiers
Doi:
10.1080/03650340.2011.627681
e-ISSN:
14763567
Study Approach
Qualitative
Study Locations
Kenya