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Use of COTMAN in Insect Management Research

Andy M. Cranmer, Megha N. Parajulee, James F. Leser, Padma L. Bommireddy, and Ram B. Shrestha


COTMAN was used in insect management research projects as another means to measure the effects of differing planting dates, irrigation, row spacing, and tillage systems on cotton growth and development. Differences in plant growth and development can have a profound effect on the development of insect infestations. Planting date, row spacing and tillage practices had a significant effect on both early crop development and physiological cutout. The irrigation methods evaluated had little effect on plant development. Boll damage assessment based on heat unit-delineated maturity provided a boll safe cutoff value of 350 HU for the western tarnished plant bug (Lygus hesperus Knight), similar to that found for the tarnished plant bug in the Southeast. COTMAN was found to be a useful tool in evaluating the impact of various crop management practices on plant development and end-of-season management decisions. This information can be related to the development of insect infestations.

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Document last modified 04/27/04