Evaluation of In-Furrow Insecticides for Control of Thrips on Cotton, 1997A

Insecticides were evaluated at the North Mississippi Research and Extension Center in Verona, Mississippi, in a RCB design with 4 replications. Plot size was 4 rows wide (38-inch row spacing) by fifty feet long. Insecticides applied in-furrow at planting on 12 May were applied with belt-cone applicators (Temik, Orthene, and Thimet treatments). On 15 Jul CGA-293343 5 FS was mixed with liquid fertilizer for one treatment, and knifed into the soil approximately 2 inches from the row. Five plants/plot were collected at random by cutting plants at ground level with scissors and gently placing them into Ziploc bags for transport to the lab. Thrips were than washed off the samples onto filter paper and were counted. Adults were identified to species under dissection microscope. During the evaluation, there was a total of 10.81 inches of rainfall, and adequate rainfall continued throughout the growing season. Yield (lb seed cotton/acre) was determined by mechanically harvesting the center 2 rows of each plot, and calculating yield based on measurement of the actual area picked.