Abstract
ABSTRACT Impact of time of sowing and sun drying of cotton stalks and on the management of cotton stem weevil , Pempherulus affinis Faust was studied at Cotton Research Station, Srivilliputtur, Tamil Nadu. In early sown cotton crop infestation and plant mortality was more compared to the late sown cotton crop. It was also observed that off season crop (i.e., Winter season crop in the Summer Cotton Tract) was much affected compared to the regular season crop (i.e.,Summer season crop in the Summer Cotton Tract). Weevil emergence was nil from sun dried cotton stalks kept under sun in situ after pulling out. But weevil emergence was observed in stored / heaped cotton stalks. Importance of in situ drying of cotton stalks after pulling out the cotton stalks to arrest the carry over of the pest to next season is brought out in the present study
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