Field efficacy of new insecticides against apple woolly aphid Eriosoma Lanigerum (Hausmann) Singh Joginder*, Bhardwaj Sushma Dr. Y. S. Parmar University of Horticulture and Forestry, Regional Horticultural Research and Training Station, Mashobra, Shimla, Himachal Pradesh, 171007 *Email: drjsverma@yahoo.com
Online published on 27 July, 2018. Abstract The woolly aphid, Eriosoma lanigerum (Hausmann) (Aphididae: Homoptera) on apple, a key pest was studied in its aerial form for field efficacy of five insecticides namely spirotetramat (Movento150OD)0.009, 0.012, 0.015%, flupyradifurone (Sivanto 200SL)-0.02, 0.03, 0.04%, thiamethoxam (Thomson 25WG)-0.012, 0.025% and flonicamid (Ulala 50WG)-0.20, 0.30, 0.40%. These were compared with chlorpyriphos (Dursban 20 EC) 0.04%. The field trial was conducted during October-November of 2015 in apple orchards at Regional Horticulture Research and Training Station, Mashobra. The results revealed that all the treatments were superior, and 21 days after spray, chlorpyriphos (0.04%) and thiamethoxam 25WG (0.025%) were the best with zero infestation; but these were statistically at par with flupyradifurone (0.03 and 0.04%. Spirotetramat was observed to be the least effective. All the insecticides proved safe as regards phytotoxic symptoms. Top Keywords Apple woolly aphid, aerial form, spirotetramat, flupyradifurone, thiamethoxam, flonicamid, chlorpyriphos, phytotoxicity. Top |