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THE EFFECTS OF A SPUNBONDED POLYESTER ROW COVER ON CAULIFLOWER YIELD LOSS CAUSED BY INSECTS

Published online by Cambridge University Press:  31 May 2012

Katherine V. Millar
Affiliation:
Department of Plant Science, University of British Columbia, Vancouver, British Columbia, Canada V6T 2A2
Murray B. Isman
Affiliation:
Department of Plant Science, University of British Columbia, Vancouver, British Columbia, Canada V6T 2A2

Abstract

A field trial was conducted to evaluate a spunbonded polyester row cover (Reemay) as a means of protecting cauliflower plants from insect pests. Total yield variables (curd weight, size, and color) did not differ significantly between plants under the row covers and those treated with insecticides, although plants under the row covers did produce a greater yield at an early harvest date. Plants in control plots failed to produce any marketable heads, owing to attack by cabbage maggots, Delia radicum (L.). Row covers may be a useful alternative to insecticides for pest control via physical exclusion of the key pest(s) from the crop plant.

Résumé

On a fait un test de terrain afin d’évaluer l’utilité de couvertures de rangs en polyester (Reemay) comme moyen de protection du chou-fleur contre les insectes nuisibles. Les variables du rendement total (poids, taille et couleur de la pomme) n’ont pas montré de différences significatives entre des plants sous couvertures et des plants traités aux insecticides, alors que les plants couverts avaient un rendement supérieur et ce à une date avancée de récolte. Des parcelles témoins n’ont pas produit de pommes commercialisables dû aux attaques de la mouche du chou, Delia radicum (L.). Les couvertures de rang pourraient être une alternative aux insecticides en protection des végétaux par l’exclusion physique des ravageurs primaires de la récolte.

Type
Articles
Copyright
Copyright © Entomological Society of Canada 1988

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