Aldicarb-15 G (Temik®) has been used for several years on cotton in the Mid-South for early-season insect control. In 1997, Rhone-Poulenc, in conjunction with the Agricenter International in Memphis, TN -initiated an extensive trial to investigate the impacts current at-planting systems have on the growth and development of cotton. The objective was to obtain data pertinent to the economic effects of at-planting insecticide treatments on BT cotton and to further explore their impacts on earliness and growth and development which extended beyond sole insect control. Results from the location in West TN- showed that the Temik® treatment provided less thrip injury, fewer plants with aborted terminals, greater initial plant height and first position boll retention, improved earliness, harvest-aid efficacy, fewer days to harvest and increased yield over the comparative treatments. Further data from box-mapping showed that the Temik® treatment increased pounds of lint cotton/acre from nodes 4-8 and 9-14 and increased yield at the first and second fruiting positions. This treatment also increased overall yield, on the average, by 389 pounds of lint cotton/acre.