Using Computer Simulation to Compare Heliothis Sampling Methods in Cotton

M.L. Walters, E.W. Richardson, J.K. Walker, and S.A. Niles


 
ABSTRACT

Intensive sampling for Heliothis zea (Boddie) and H. virescens F. in cotton in the Brazos River Valley near College Station, TX in 1985 indicates that current sampling methods for this pest could be improved. Preliminary analysis suggests examination of the whole cotton plant as opposed to examining only selected plant parts. Where an action threshold of 8,000 larvae per acre is accepted, a sample of 25 single plants detected 8,000 or more larvae/acre 95% of the time, where the real population mean was 18,000 larvae/acre.



Reprinted from 1986 Proceedings: Beltwide Cotton Production Research Conferences pp. 227 - 230
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998