Biorational management of sucking pests of tomato

ABSTRACT: The biorational insecticides namely Biomax 1.2 EC, Ripcord 10 EC, Sunmectin 1.8 EC, Spinosad 12.5 SC, Mahogany oil, Neem oil, and Detergent (Veem liquid) with concentrations of 1 ml/L, 2 ml/L, 2 ml/L, 2 ml/L, 5 ml/L, 5 ml/L and 20 ml/L of water, respectively were applied to manage jassid and whitefly attacking tomato ( Solanum lycopersicum ) plants. The efficacy of the biorational insecticides was compared to control treatment (untreated). Results showed that the biorational treatments significantly reduced the incidence of jassid and whitefly, and exerted lower level of virus infection compared to the control. The biorational treatments did not affect the level of K, Ca and Mg contents of the fruit and presented significantly higher amount of yield and benefit-cost ratio than that of control. The biorational treatment Sunmectin 1.8 EC showed the lowest abundances of whitefly and jassid, and revealed the lowest level of virus infected plants, leaves and fruits. The plants treated with Sunmectin 1.8 EC resulted the highest yield (58t/ha) and benefit cost ratio (6.1). The tested biorational approaches specially Sunmectin 1.8 EC may be used as a tool of integrated management program of sucking pests of tomato like jassid and whitefly. 

Keywords: Biorational insecticide, Solanum lycopersicum, jassid, whitefly, yield