Comparative effects of some biopesticides and a chemical pesticide (cypermethrin 10 EC) on insect pests and parasitic diseases of Cowpea Vigna unguiculata (L.) Walp (Fabaceae), Subject description

Abstract

The present study, carried out in Adébour in eastern Niger, investigated the effects of some biopesticides and a chemical pesticide (cypermethrin 10 EC) on insect pests and parasitic diseases of cowpea. The objective of this study is to compare the insecticidal and / or repellent effect of biopesticides and chemicals on pests and parasitic diseases of Cowpea. A total of 6 treatments were used. The data were collected per plot and per treatment and focused on the parameters number of leaves, inflorescences and pods attacked by cowpea pests on the one hand and the number of leaves, aborted inflorescences and diseased pods, on the other hand. In addition, observations focused on pod and grain yields. Analysis of the results showed that the chemical pesticide was the most effective treatment against pests and diseases of cowpea. Treatments with neem leaf juice, chilli juice and tobacco porridge, even though they did not have the best pod and grain yield, reduced pest and disease damage to the leaves, pods and inflorescences of cowpea. At the end of this study, we can recommend to producers the use of organic pesticides with greater losses than with chemical pesticides but which can be offset by the cost / benefit ratio.

Keywords: Comparative effects, Bio pesticide, chemical pesticide, pest, parasitic disease, Cowpea