Working Document Series Open Access 2010 RUF-34752

Effects of cowpea leaf harvesting initiation time on yields and profitability of dual-purpose sole cowpea and cowpea-maize intercrop

J.N. AguyohF. M. ItulyaS. MwanarusiG. Owour

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Abstract

144 words

Dual-purpose cowpea production is a common component of many tropical and sub tropical subsistence farming systems. However, limited information exists on effects of leaf harvesting initiation time on yields and profitability of dual-purpose cowpea based cropping systems. This study investigated the effects of initiating cowpea leaf harvesting at different times on performance of sole dual-purpose cowpea and dual-purpose cowpea-maize intercrop. Initiating leaf harvesting at 3 and 4 weeks after cowpea emergence (WAE) resulted in highest leaf and grain yields, respectively among leaf harvested cowpea. Overall, cowpea grain yields were highest in control treatment. Yields were lower in intercrop than in monocrop treatments. Maize yields in intercrop treatments were improved following harvesting of leaves of the companion cowpea. Initiating leaf harvesting at 3 and 4 WAE yielded highest returns in cowpeamaize intercrop and sole cowpea, respectively. Intercropping was on overall more profitable than sole cropping.

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