Efficacy of new insecticides for the management of diamondback moth, Plutella xylostella (Linnaeus) on cauliflower and cabbage.

摘要

Field studies to determine the efficacy of new insecticides, namely Spinosad 2.5 SC (spinosyn A 50% minimum and spinosyn D 50% maximum) at 600 ml/ha, Proclaim 05 SG (emamectin benzoate) at 170 g/ha and KN 128 15 EC (indoxacarb) at 333 ml/ha for the control of Plutella xylostella on cauliflower and cabbage were conducted during 2006 in Ludhiana, Punjab, India. The insecticides were compared with the standard controls Thiodan 35 EC (endosulfan) at 1000 ml/ha and Padan 50 SP (cartap hydrochloride) at 500 g/ha. The three new insecticides resulted in significantly maximum reduction in P. xylostella larval population ranging from 84.54 to 93.58% on cauliflower and 89.24 to 91.49% on cabbage crop compared to 43.14-58.60% reduction in standard controls on cauliflower and 68.61-77.45% reduction on cabbage crop, respectively. The marketable yield was significantly more in Spinosad 2.5 SC treatment (193.03 q/ha of cauliflower and 320.26 q/ha of cabbage crop).