Environmental Entomology (1989) 18, 939-944

A.L. Knight and L.A. Hull (1989)
Predicting seasonal apple injury by tufted apple bud moth (Lepidoptera: Tortricidae) with early-season sex pheromone trap catches and brood I fruit injury
Environmental Entomology 18 (6), 939-944
Abstract: Cumulative catches of brood I tufted apple bud moth, Platynota idaeusalis (Walker), males in sex pheromone traps early in the season (before 28 May) provided a significant predictor of total-season fruit injury for the apple cultivars 'Yorking' and 'Delicious' but not for 'Golden Delicious' during 1986 and 1987. Early-season pheromone trap catches were also significant predictors of brood I injury for 'Yorking' in 1986 and 'Delicious' in 1987. Incorporating a measure of tree size with these cumulative trap catches improved the prediction of total fruit injury for the cultivars 'Delicious' and 'Yorking' in 1987. Significant regressions of total fruit injury with first-brood injury also were found for each cultivar except 'Golden Delicious' in 1987. The potential use of these early-season measures of population densities to more effectively manage tufted apple bud moth on apple is discussed.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): Alan L. Knight

Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution
thresholds/decision-support systems

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Platynota idaeusalis	Apple (Malus)	U.S.A. (NE)