Influence of plant maturity and application timing on efficacy of dicrotophos for control of cotton aphid Academic Article uri icon

abstract

  • Efficacy of dicrotophos for controlling the cotton aphid, Aphis gossypii Glover, was investigated at the Texas Agricultural Experiment Station at Chillicothe in 1992-1994. Cotton was planted in late April, late May, and late June each year, and dicrotophos, at 0,5 lb Al/acre, was applied as aphid numbers began increasing during August A single application was made at different aphid densities within each planting date. A treatment threshold of 35-50 aphids per leaf can be used for all three planting dates A single application prevented development of high numbers for extended periods in the late April and late May planting dates; in some years populations of 50 aphids per leaf did not develop in these two plantings. Multiple applications will probably be necessary to control aphids in late June cotton.

published proceedings

  • SOUTHWESTERN ENTOMOLOGIST

author list (cited authors)

  • Slosser, J. E., Idol, G. B., Rummel, D. R., & Pinchak, W. E.

complete list of authors

  • Slosser, JE||Idol, GB||Rummel, DR||Pinchak, WE

publication date

  • June 1997