Effect of time of application of moringa (Moringa oleifera L.) leaf powder on root-knot nematode (Meloidogyne spp.) infecting cowpea (Vigna unguiculata L. walp)

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E. Nortaa Kunedeb Sowley Frederick Kankam Haruna Dasmana


The root-knot nematode, Meloidogyne spp. is a major economic pest of cowpea in Northern Ghana. The use of moringa leaf powder is an economical and environmentally friendly alternative for nematode management. The effectiveness of time of application of moringa (Moringa oleifera) leaf powder on the management of root-knot nematode (Melodogyne spp.) for cowpea (Vigna unguiculata) was evaluated at University for Development Studies, Nyankpala, Ghana using a Randomized Complete Block Design. Treatments were; application at planting (AP), application one week after planting (1 WAP), application two weeks after planting (2 WAP) and application three weeks after planting (3 WAP). Application at 1 WAP showed better root-knot nematode suppression resulting in fewer root galls and greater plant growth. There was also an increase in grain yield. Application of moringa leaf powder at 1 WAP has a longer potency and efficacy in reducing or controlling the population of root-knot nematodes of cowpea.  


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Sowley, E. N. K., Kankam, F., & Dasmana, H. (2018). Effect of time of application of moringa (Moringa oleifera L.) leaf powder on root-knot nematode (Meloidogyne spp.) infecting cowpea (Vigna unguiculata L. walp). Advances in Agricultural Science, 6(4), 32-41. Retrieved from http://aaasjournal.org/submission/index.php/aaas/article/view/89


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