1Division of Agricultural Chemicals, Indian Agricultural Research Institute, New Delhi, 110012
2Division of Entomology, Central Potato Research Institute, Simla, 171001 (H. P.)
*C. P. P. T. I., Hyderabad-500 030.
Phorate granules at 0.75, 1.5 and 2.0 Kg. ai ha and oxydemeton-methyl spray at 150, 300 & 400g ai/ha applied 4–5 times during the growing season to the potato crop to control aphids has been evaluated for residues.