Field efficacy of bio-inputs and insecticides against melon fruit fly, Zeugodacus cucurbitae (Coquillett) (Diptera: Tephritidae) in bitter gourd (Mormodica charantia L.)

Abstract

Field efficacy of different bio-inputs and insecticides against melon fruit fly, Zeugodacus cucurbitae (Coquillett) in bitter gourd was carried out in farmer’s field. The effect of different bioinputs (ITK concoction) and insecticides were superior over control in reducing the fruit fly damage and increasing yield. The application of spinosad 45 SC and chlorantraniliprole 18.5 SC gave maximum fruit yield (12,200 and 14,540 kg/ha) and (11,780 and 13,950 kg/ha) followed by agniastram (10,950 and 13,600 kg/ha), karpurakaraisal (10,570 and 13,095 kg/ha) in Kharif and Rabi, respectively. The minimum fruit yield was recorded in ten leaf extract (9560 and 11,110 kg/ha) during Kharif and Rabi. The benefit cost ratio was maximum in spinosad 45 SC (1:2.33 and 1:2.81) and chlorantraniliprole 18.5 SC (1:2.18 and 1:2.61) followed by agniastram (1:2.14 and 1:2.56), karpurakaraisal (1:2.20 and 1: 2.40) in Kharif and Rabi.