Regional Agricultural Research Station, Anakapalle, Andhra Pradesh, 531 001.
* Regional Agricultural Research Station, Chintapalle, A.P.
Efficacy of soil application of some insecticides was evaluated for 3 seasons from 1985 through 1987 for controlling the primary source of scale insect infestation in stubbles of sugarcane variety Co A 8201. Scale insect infestation attained maximum intensity by eight months after crop emergency. The differences in scale infestation in the treatments as well as control plots were not significant indicating that soil application of insecticides in pockets at ratooning could not check primary source of infestation in the stubbles.
