Varietal preference and efficacy of various chemicals against red pumpkin beetle (Aulacophora foveicollis L.) (Coleoptera: Chrysomelidae) in different cucumber (Cucumis sativus) cultivars

Experiments were conducted to determine the resistance level of different cultivars and study efficacy various synthetic insecticides against red pumpkin beetle (Aulocohphora foveicollis) at New Developmental Malakandir Farm, University Agriculture Peshawar, during 2018. In first experimental trial, data collected on mean population density three (Desi, Super Green Madam-560) cucumber crop. While in second experiment, (Carbaryl, Cypermethrin, Malathion) an Untreated/Control used effect these Desi (susceptible) Madam 560 (resistant) regarding cultivar. Randomized Complete Block Design (RCBD) was this experiment. The relevant parameters recorded weekly intervals for eleven (1st experiment) four weeks (2nd i.e. till termination experiments. During it observed that significantly lowest (0.82) per plant highest yield (8981.3 kg ha-1) from 560, while (4.06) (7313.7 obtained Significantly maximum number plant-1 seventh week (29 May) Desi, with 6.41, 4.50 1.62 plant-1, respectively. cropping season, reached its peak May). After 7th week, a gradual decline occurred plant-1. adults (0.12), area consumption (3.12 mm2), percentage weight loss (1.60%) (21555 treated Carbaryl, adult (7.09), (36.11 (17.27%) (7247 untreated It followed by cultivar where 5.40, 25.92 mm2, 13.20% 8766 ha-1. is better than as results fruit. Carbaryl compared Malathion Cypermethrin because reduces beetle.