Horticultural Experiment and Training Centre, Chaubattia, (Almora)
Lymantria obfuscata was recorded by the author as an important pest of apple in the hills of Uttar Pradesh. The effectiveness of several insecticides was evaluated against the eggs and larvae of this insect. Mineral oil based ESSO tree spray oil, IOC tree spray oil and Power oil WSE 7267, all at 3, 6 or 9 per cent and Sandolin A, a dinitro or the cresol preparation, at 1, 2 or 3 per cent proved very effective in reducing the viability of the eggs. Application of 5 per cent dust formulation of insecticides like BHC, aldrin, DDT, heptachlor, chlordane or carbaryl in 30 cm wide and 0.5 cm thick bands on the ground around the trunk of the trees or spraying the trees with 0.05 per cent emulsion of insecticides like diazinon, endosulfan, methyl parathion, dichlorvas, quinalphos or fenitrothion resulted in satisfactory control of the larvae.
