Performance of cowpea intercropped with amaranth in an inland valley of a derived savanna
2009
Adigbo, S.O.,University of Agriculture, Abeokuta (Nigeria). Dept. of Plant Physiology and Crop Production
This study was conducted to investigate the performance of Vigna unguiculata (var. IT90K-76, IT90K-277-2, Oloyin, Drum) intercropped with Amaranthus cruentus in an inland valley in Nigeria during the dry season. The 4 by 2 factorial experiment was carried out during the years 2003/2004 and 2004/2005. Amaranth was intercropped with each cowpea variety. The intercrop proportion mixture and population adopted in this study was additive series. Cowpea grain performance in intercropping was similar to that in sole culture. The four cowpea varieties had similar grain yields in 2003/2004, whereas in 2004/2005 the yields of IT90K-76, IT90K-277-2 and Oloyin were similar but significantly higher than that of Drum. The yield produced would have required 31-90% more land if the crops were planted in pure stands than when they were cultivated intercropped. Intercropping amaranth with cowpea was compatible in terms of insecticidal spray.
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