Yield and Nitrogen Fixation Response by Drought Tolerant Tepary Bean (Phaseolus acutifolius A. Gray Var. Latifolius) in Sole and Maize Intercrop Systems in Semi-arid Kenya

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dc.contributor.authorShisanya, C.A.
dc.date.accessioned2014-07-02T09:04:45Z
dc.date.available2014-07-02T09:04:45Z
dc.date.issued2003
dc.descriptionDOI: 10.3923/ja.2003.126.137en_US
dc.description.abstractTepary bean (TB), a drought tolerant bean variety has become popular among poor small-scale farmers in semi-arid Kenya, where it is predominantly intercropped with maize. Field experiments were conducted on effect of intercropping TB and maize on nitrogen fixation and crop yield in semi-arid Kenya over two cropping seasons. Experimental design was randomised complete block with eight treatments: TB sole crop not inoculated with Rhizobium (R3254) and without N fertilizer (N), TP sole crop not inoculated with R3254 with or without N, TB sole crop inoculated with R3254 without N, TB with maize intercrop not inoculated with R3254 with or without N and maize sole crop with or without N. Each treatment was replicated four times. Significant differences (P≤ 0.05) were observed in total plant dry weight in treatment R3254 at both 21 and 42 days after emergence (DAE). TB yields were significantly reduced in uninoculated intercrop. Inoculated TB treatments had significantly higher seed dry weights and yields ha-1. Intercropping TB and maize suppresses the yield of the former under semi-arid conditions. Inoculating TB with Rhizobium strain R3254 was infective, effective and significantly improved TB yields in sole and intercrop. Soil analysis after the two cropping seasons indicated enhancement of soil N in sole TB plots above pre-planting levels. Maize plots exhibited a decline in soil N. Total N concentration in plant tissues was significantly enhanced in treatment R3254. There was a marked increase in soil P in all treatment plots following amendment.en_US
dc.identifier.citationJournal of Agronomy Volume: 2 | Issue: 3 | Page No.: 126-137en_US
dc.identifier.isbn1812-5417
dc.identifier.issn1812-5379
dc.identifier.urihttp://docsdrive.com/pdfs/medwelljournals/jftech/2005/300-307.pdf
dc.identifier.urihttp://ir-library.ku.ac.ke/handle/123456789/10270
dc.language.isoenen_US
dc.publisherAsian Network for Scientific Informationen_US
dc.subjectcropping systemsen_US
dc.subjectN in the cropsen_US
dc.subjectN and P fertilizationen_US
dc.subjectnodule formationen_US
dc.subjectresidual Nen_US
dc.subjectrhizobium R3254 inoculationen_US
dc.subjectseed yielden_US
dc.titleYield and Nitrogen Fixation Response by Drought Tolerant Tepary Bean (Phaseolus acutifolius A. Gray Var. Latifolius) in Sole and Maize Intercrop Systems in Semi-arid Kenyaen_US
dc.typeArticleen_US
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