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A LOW-SPRAY APPLE-PEST-MANAGEMENT PROGRAM FOR SMALL ORCHARDS

Published online by Cambridge University Press:  31 May 2012

Ronald J. Prokopy
Ronald J. Prokopy
Affiliation:
Department of Entomology, University of Massachusetts, Amherst, MA 01093
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Abstract

From 1981 to 1984, a low-spray management program was employed against injurious arthropods on the 40 disease-resistant apple trees in my experimental orchard in Massachusetts. The program consisted of an annual early-season application of petroleum oil followed by 2 applications of phosmet (1 at petal fall and another 10–14 days later). Visual traps were used to suppress Rhagoletis pomonella flies. For all years combined, a mean of 89.7% of fruit sampled at harvest in this orchard was free of insect injury compared with 0% uninjured fruit on neighboring unsprayed trees. Populations of foliar-feeding pests never reached injurious levels.

Résumé

De 1981 à 1984, on a appliqué un programme de régie basé sur un minimum d'arrosage contre les arthropodes nuisibles à 40 pommiers résistants aux maladies dans mon verger expérimental au Massachusetts. Le programme comprenait une application annuelle hâtive d'huile suivie de 2 applications de phosmet (l'une à la chute des pétales et l'autre 10–14 jours plus tard). Des pièges visuels ont servi à supprimer les mouches de Rhagoletis pomonella. Sur l'ensemble des années, on a observé une moyenne de 89,7% de fruits exempts de dommages dus aux insectes lors de la récolte, comparé à 0% sur des arbres avoisinants non arrosés. Les populations de défoliateurs n'ont jamais atteint de niveaux dommageables.

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Type
Articles
Information
The Canadian Entomologist , Volume 117 , Issue 5 , May 1985 , pp. 581 - 585
Copyright
Copyright © Entomological Society of Canada 1985

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