STUDY OF THE EFFECT OF BIOPESTICIDES BASED ON WOOD ASH AND EUCALYPTUS ALBA ON APHIDS AND THE GROWTH OF PEPPERS (CAPSICUM ANNUM L.) IN DAKAR, SENEGAL.

The pepper plant (Capsicum annuum L.) is a vegetable crop that contributes to the socio-economic, food and medicinal development of populations. However, its production is currently facing new environmental challenges, particularly aphid attacks, which have a positive impact on yield. It is therefore necessary to study the effects of these attacks. The overall objective of this study is to contribute to the evaluation of the effect of wood ash and Eucalyptus alba-based biopesticides on aphids in a pepper crop. To do this, a Fisher block experimental design was adopted. The factor studied was the biopesticide product at three levels (wood ash, E. alba and the control) with three replicates. The parameters studied were the effect of the two biopesticides, the incidence of aphids, growth, development and production yield. The results of the experiment showed that Eucalyptusalba (T2) has a repellent effect on aphids and is more effective than wood ash (T1). In terms of average weight, production yields were higher with wood ash (T1), which obtained the highest fruit weight (37.00 g), followed by E. alba (T2) with an average of (35.70 g) and finally the control (T0), which had the lowest average of (35.05 g).