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Cotton Aphid Infestations in Mississippi: Efficacy of Selected Insecticides and Impact on Yield

M.B. Layton, H.R. Smith G. Andrews


Eleven insecticide treatments were evaluated for efficacy against cotton aphid. Treatments containing Bidrin, Metasystox-R, Lannate, or Provado provided in excess of 90% control at 2 DAT, but aphid populations recovered rapidly following treatment. Treatments providing best overall control were Bidrin at 0.5 lb AI/A and Lannate at 0.45 lb AI/A. Infestation level in the untreated check was extremely heavy, exceeding 800 aphids/leaf at one point and persisting at high levels for more than 3 weeks before being controlled by a natural fungal epizootic. This prolonged, heavy aphid infestation resulted in a yield reduction of 220 lbs. of lint per acre.

Reprinted from Proceedings of the 1996 Beltwide Cotton Conferences pp. 892 - 893
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998