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Validation of PC-REDAPOL: Fruit Set Prediction Model for Apples

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The personal computer version of the REDAPOL apple fruit set prediction model has been validated in Arizona and Washington orchards. The PC-REDAPOL computer simulation model is designed to predict the percentage of blossoms setting fruit on apple trees. PC-REDAPOL predictions were within the 95% CI of the actual average percentage of blossoms setting fruit in 16 out of 23 model validation tests. The model also accurately predicted fruit set on limbs where honey bee, Apis mellifera L., visitation and pollination were stopped at different points during bloom. PC-REDAPOL has all the features of the original REDAPOL model, plus additions such as the ability to update estimates of the honey bee foraging population on apple trees during a simulation, pest management information, and a degree-day calculator. The program runs on IBM compatible personal computers and is available on request.

Document Type: Research Article

Publication date: August 1, 1995

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  • Journal of Economic Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes articles on the economic significance of insects and is divided into the following sections: apiculture & social insects; arthropods in relation to plant disease; forum; insecticide resistance and resistance management; ecotoxicology; biological and microbial control; ecology and behavior; sampling and biostatistics; household and structural insects; medical entomology; molecular entomology; veterinary entomology; forest entomology; horticultural entomology; field and forage crops, and small grains; stored-product; commodity treatment and quarantine entomology; and plant resistance. In addition to research papers, Journal of Economic Entomology publishes Letters to the Editor, interpretive articles in a Forum section, Short Communications, Rapid Communications, and Book Reviews.
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