The present study investigates the effect of intercropping (maize-cowpea, maize-okra, maize-okra-cowpea, okra-cowpea) compared to insecticide application on level infestation insect pests and final yield maize, cowpea okra. Field experiments were conducted during 2016 2017 cropping seasons in Guinean Savannah (Dang-Ngaoundere) Sudano Sahelian (Gouna-Garoua) agro-ecological zones Cameroon. Our e...

Bradley J. Cardinale*, Chad T. Harvey, Kevin Gross and Anthony R. Ives Department of Zoology, University of WisconsinMadison, Madison, WI 53706, USA [email protected] [email protected] [email protected] *Correspondence: E-mail: [email protected] Abstract The suppression of agricultural pests has often been proposed as an important service of natural enemy diversity, but few experiments have test...

Abstract Background Synthetic insecticides employed in seed treatment are often phytotoxic, especially at slightest misapplications. Cowpea is mainly attacked by Callosobruchus maculatus . It established that azadirachtin, myristicin and α-humulene based (botanical insecticides) eco-friendly have activity against C. thus considered ideal candidates research efforts targeted developing plant opt...

Single Nucleotide Polymorphism (SNP) markers were used in characterization of 113 cowpea accessions comprising of 108 from Ghana and 5 from abroad. Leaf tissues from plants cultivated at the University of Ghana were genotyped at KBioscience in the United Kingdom. Data was generated for 477 SNPs, out of which 458 revealed polymorphism. The results were used to analyze genetic dissimilarity among...

Cowpea (Vigna unguiculata (L.) Walp.) is one of the most important grain legumes in sub-Saharian regions. It contributes to man food security by providing a protein-rich diet. However, its production is limited by abiotic stresses such as salinity. This study aims to evaluate the salt tolerance of 15 cowpea cultivars, at germination stage. The seed germination process consisted of sowing them i...

The anti-feedant and growth inhibitory effects of seed extracts of custard apple in hexane, ethyl acetate and methanol were tested against neonate and 7 days old larvae of the Khapra beetle, Trogoderma granarium, using a feeding bioassay. The LC50 values for hexane, ethyl acetate and methanol extracts were 1195.41, 305.36 and 1446.32 ppm for neonate larvae; 5805, 1300 and 5815 ppm for 7 days ol...

It has been demonstrated that variant vicilins are the main resistance factor of cowpea seeds (Vigna unguiculata) against attack by the cowpea beetle Callosobruchus maculatus. There is evidence that the toxic properties of these storage proteins may be related to their interaction with glycoproteins and other microvillar membrane constituents along the digestive tract of the larvae. New finding...

The study investigates consumers’ preference for cowpea reflected in the Nigerian markets through price discounts and premiums that consumers pay for different cowpea characteristics. The price data used for this study were obtained through a market survey. A common data collection protocol was employed. Every month, between October 2009 to December 2010, five cowpea samples per seller were bou...

Cowpea (Vigna unguiculata) is a major source of dietary protein and essential component of the cropping systems in semi-arid regions of Sub-Saharan Africa. However, yields are very low due to lack of improved cultivars, poor management practices, and limited inputs use. The objectives of this study were to assess the effects of rhizobia inoculant and P on nodulation, N accumulation and yield of...