Cotton Aphid Control and Yield Parameters of Temik® Brand Insecticide Treatments

Monty Christian, James Supak


In 1992 and 1993 trials were conducted to confirm the results of a field trial conducted in 1991, which showed that aldicarb treatments significantly reduced cotton aphid, Aphis gossypii Glover, populations, increased yield, decreased late season defoliation and protected fruit set and fiber quality. In 1992, 3 trials were established with planting dates ranging from April 23 to June 11. In these trials, aldicarb significantly reduced aphid populations over the untreated check. The amount and length of control was rate dependent. As the season progressed and aphid populations increased, aldicarb was more efficacious in controlling aphids on mid-canopy leaves than on petiole leaves. Yields were significantly increased only in the trial with the latest planting date. In another trial, with a moderately late planting date, yields in all the aldicarb treatments numerically out yielded the untreated check. No significant yield differences were observed in the trial with an early planting date. Plant mapping data indicated that aphid control resulted in protecting fruit set and fiber quality. In 1993, 4 trials were established, but aphid populations were very light and didn't influence yield or fiber quality. Even so, aldicarb treatments again significantly reduced aphid populations.

Reprinted from Proceedings of the 1994 Beltwide Cotton Conferences pp. 1021 - 1025
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998