Effects of Manure, Lime and Mineral P Fertilizer on Soybean Yields and Soil Fertility in a Humic Nitisol in the Central Highlands of Kenya

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dc.contributor.authorDanga, B. O.
dc.contributor.authorMugwe, J. N.
dc.contributor.authorVerde, B.S.
dc.date.accessioned2014-01-06T08:22:43Z
dc.date.available2014-01-06T08:22:43Z
dc.date.issued2013-09
dc.description.abstractSoybean ( Glycine max (L.) Merrill) is one of the most important legume crops being introduced into the smallholder farming systems of the Central Highlands of Kenya (CHK) to improve income and household nutrition of farmers. However, phosphorus fixation, depletion of soil nutrients and soil acidity are major causes of low yields. The objective of this study is to evaluate effects of manure application, liming and phosphorus application on soil properties and soybean performance. The study consisted of 8 treatments: manure (0, 5 and 10 t ha -1 ), lime (0 and 2 tha -1 ) and P fertilizer (0, 30 and 60 kg P ha -1 ). The experiment was laid out in a randomized complete block design (RCBD) with 4 replicates in plots of 4 m × 4.5 m. Manure and lime significantly reduced exchangeable acidity and increased soil pH. Application of manure alone or combined with lime or P fertilizer also increased Mg and K. Treatments that had sole lime, lime combined with manure and manure combined with P applied gave a significant increase in exchangeable Ca. Soybean responded well and significantly to application of manure either alone or combined with lime, P or both. These results showed the potential role of lime, manure and P fertilizer in improving soil fertility and soybean yields.en_US
dc.identifier.citationInternational Journal of Agricultural Science Research Vol. 2(9), pp. 283-291, September 2013en_US
dc.identifier.urihttp://ir-library.ku.ac.ke/handle/123456789/8346
dc.language.isoenen_US
dc.publisherAcademe Research Journalsen_US
dc.subjectManureen_US
dc.subjectLimeen_US
dc.subjectP fertilizeren_US
dc.subjectSoil pHen_US
dc.subjectExchangeable acidityen_US
dc.titleEffects of Manure, Lime and Mineral P Fertilizer on Soybean Yields and Soil Fertility in a Humic Nitisol in the Central Highlands of Kenyaen_US
dc.typeArticleen_US
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