A scientific-extension lecture under the production assistant project entitled "Cotton Pest Management" was delivered by Dr. Gholam Reza Golmohammadi, the faculty member of the Agricultural Entomology Research Department of the Institute on Monday, September 7, organized by the Department of Research and Technology affairs of the Institute in the presence of faculty members, researchers and experts in the field of agriculture and extension in the form of a video conference.
In this lecture, methods of diagnosis, damage, time of emergence and occurrence of important pests of cotton, including: thrips, mites, aphids and leaf-hoppers (beginning of season), whitefly (mid and end of season), bollworm and spiny cotton bollworm (end of season) and their control based on integrated management was discussed. The best way to control thrips and sucking pests at the beginning of the season is to disinfect the seeds. The most important pest of cotton is bollworm, which can be controlled at the right time by integrated management. The best time to spray pesticide for cotton bollworm is when 10 to 12 larvae per 100 plants is observed or one week after the peak of butterfly flight in the pheromone trap. The best time to spray for cotton whitefly is when 5 nymphs or 10 adult insects are observed on each shrub.