EFFETS COMPARATIFS DE TROIS BIOPESTICIDES SUR LANTHRACNOSE, LA BACTERIOSE ET LA ROUILLE EN VERGERDANACARDIERS EN COTE DIVOIRE

In Cote d Ivoire, among the causes of the decline in production is pest pressure, particularly anthracnose, bacterial blight and rust, which constitute a major threat to cashew orchards. The objective of this study is to evaluate the effectiveness of three biopesticides on these three main cashew diseases. Thus, before the application of biopesticides, the incidence and severity of anthracnose, bacterial blight and rust were evaluated. Afterwards, the three biopesticides (Carapa oil, Neem oil and Fungisei) were applied to cashew trees in the Ferkessedougou timber yard by spraying using an atomizer for four operations at 15-day intervals. The experimental design used is a split plot. Then, at the end of the last application, the incidence and severity of each disease were calculated according to periods 5; 10 and 15 days after the last treatment. The results obtained showed the effective presence of anthracnose, bacterial blight and rust before the treatment of the plot.