Varietal and Nitrogen-Level Effects on Sweetpotato Whitefly Populations in Cotton

T. F. Watson, J. C. Silvertooth and A. Tellez


Four cotton varieties, each differing in leaf pubescence, and three nitrogen (N) levels were investigated for effects upon development of SPWF populations. The N treatments appeared to have no effect upon population development. However, there was a direct correlation of increased SPWF numbers with increased hairiness. Both DPL 5415 and SALCOT10 had significantly lower seasonal means of all stages than did the more hairy varieties of CB1135 and STV453.

Reprinted from Proceedings of the 1994 Beltwide Cotton Conferences pp. 868 - 869
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998