Custor (Ricinus communis Linn.) is one of the important oilseed crops grown in Madras State. The crop is subject to the attack of a number of insect pests and among them the castor shoot and capsule borer, Dichocrocis punctiferalis Guen is the most important one as it reduces the yield of beans considerably by boring into the capsules and tender shoots. Investigations were in progress since 1961 at the Agricultural College and Research Institute, Coimbatore to find out the efficacy of the recent synthetic insecticides in controlling the pest on castor. The results of the observations made during 1961 to 1966 are discussed in this paper.
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