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

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.
La production du niébé à double usage est un élément commun à de nombreux systèmes agricoles de subsistance sous tropicales et tropicales. Cependant, peu d’informations existent sur les effets du temps d’initiation des feuilles de récolte sur les rendements et la rentabilité de niébé à double fin des systèmes de culture. Cette étude a examiné les effets de l’ouverture de la récolte des feuilles de niébé à différents moments sur le rendement du niébé à double usage unique et à double usage intercalaire du niébé-maïs. Le lancement de la récolte des feuilles à 3 et 4 semaines après la levée du niébé (WAE) a entraîné au plus haut des feuilles et des rendements des céréales, le niébé, respectivement chez les feuilles récoltées. Dans l’ensemble, les rendements en grains de niébé ont été plus élevés en matière de contrôle du traitement. Les rendements ont été inférieurs en inter-culture que dans les traitements monoculture. Les rendements du maïs en culture du traitement d’insertion ont été améliorés après la récolte des feuilles de niébé . Le lancement de la récolte des feuilles à 3 et 4 WAE a donné le rendement le plus élevés en culture d’insertion du niébé-maïs et de niébé, respectivement. La culture d’insertion a été sur l’ensemble la plus rentable que la culture pure.
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Region Focus: 
East Africa
RUFORUM Conferences and Workshops
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Open Access
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Printed resource


"The 2010 RUFORUM Biennial Conference was the second in the series. The main objective of the Biennial conferences is to provide a platform for agricultural research for development stakeholders in Africa and beyond to actively exchange findings and experiences, while at the same time learning lessons towards improving performance of the agricultural sector and ultimately people’s livelihoods. The biennial conference is RUFORUM’s most comprehensive meeting for the diversity of stakeholers in agriculture. It is especially dedicated to graduate students and their supervisors, grantees in RUFORUM member universities and alumni. It is a platform for peer review, quality control, mentorship, networking and shared learning. This record contains an extended abstract accepted under the theme agronomy".