Campus Units

Entomology, Plant Pathology and Microbiology, Horticulture, Economics

Document Type

Article

Publication Version

Published Version

Publication Date

1994

Journal or Book Title

HortTechnology

Volume

4

Issue

2

First Page

136

Last Page

141

Abstract

Integrated peat management (IPM) strategies for control of apple scab and codling moth (Cydia pomonolla) were compared with a traditional protestant spray program in an Iowa apple orchard over a 3-year period. IPM tactics for scab included a postinfection spray program and an integrated, reduced-spray program based on the use of demethylation inhibitor fungicides. Codling moth spray timing was determined by pheromone-trap captures and degree-day models. The IPM tactics resulted in an average of three fewer fungicide sprays and two fewer insecticide sprays than the protestant program. Neither yield, incidence of fruit scab, nor incidence of codling moth injury on fruit was significantly different among the two IPM treatments and the protestant treatment. A no-fungicide treatment had significantly lower yield and greater scab incidence than the other treatments. A partial budget analysis indicated that the treatment using the postinfection strategy was more costly per acre than the protectant program for orchardsacres, about equivalent in cost for 20 acres, but leas costly for 40 acres. A treatment incorporating the integrated, reduced-spray strategy was less costly than either postinfection or protestant strategies at orchard sizes from 5 to 40 acres. Return (total revenue - cost for control of primary scab and codling moth) per acre for the IPM strategies was somewhat lower than for the protestant program.

Comments

This article is published as Gleason, Mark L., M. K. Ali, Paul A. Domoto, D. R. Lewis, and M. D. Duffy. "Comparing integrated pest management and protectant strategies for control of apple scab and codling moth in an Iowa apple orchard." HortTechnology 4, no. 2 (1994): 136-141. Posted with permission.

Copyright Owner

American Society for Horticultural Science

Language

en

File Format

application/pdf

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