Bio-efficacy of Annona formulation for the management ofAphis gossypii on vegetable crops

Field experiments were conducted to optimize the dose and assess the efficacy of an Annona formulation against Aphis gossypii Glover on vegetable crops such as cucumber, bitter gourd, okra and dolichos. Based on LC50 values, different doses of the Annona formulation were evaluated specifically on bitter gourd and cucumber. The dose optimization study determined that a concentration of 3.5 ml/L of water of the Annona formulation effectively managed A. gossypii under field conditions. Subsequently, the efficacy of this dosage was further evaluated in field trials against A. gossypii in comparison with other botanicals and insecticides. The Annona formulation at 3.5 ml/L of water demonstrated significant effectiveness, reducing aphid populations by 97% compared to alternative botanicals and insecticides. This study suggests that the developed Annona formulation could serve as a promising eco-friendly approach for managing aphids on vegetable crops.