ABSTRACT
Pheromone trap catches of Helicoverpa zea moths from small groups of traps (clusters) in four North Carolina counties closely tracked the mean moth trap catches over the entire area in 1991 and 1992. Catches of moths in 1992 were highly correlated with H. zea eggs deposited on cotton terminals in fields associated with each trap cluster, but were not correlated with eggs in fields outside of the cluster areas. When pyrethroids were applied on a standard rate/seven day interval vs a high rate/14 day interval performance against bollworm and European corn borer was usually comparable. Some products appeared to perform more favorably as a high rate/extended interval treatment. Results suggested the use of pheromone traps and high pyrethroid rate/extended interval nay allow a simplified scouting and treatment strategy.
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