Efficacy of plants aqueous extracts for greenflies management on six cowpea cultivars in northwest of Benin
The present study allowed evaluating the efficacy of five plant water extracts on aphids and the yield of six cowpea’s cultivars in three villages of the northwest region of Benin. The five aqueous extracts made with Hyptis suaveolens, Azadirachta indica, Manihot esculenta, Thevetia neriifolia and Cymbopogon nardus have been compared to the control treatment without product with six producers in a scattered experimental randomized blocks. The number of aphids present on the cowpea plants at 27, 34, 41, 48, 55 and 62 days after sowing, and the cowpea seeds yield was estimated.