Journal of Applied Entomology - Zeitschrift für angewandte Entomologie (2001) 125, 327-331

C. v. Boguslawski and T. Basedow (2001)
Studies in cotton fields in Egypt on the effects of pheromone mating disruption on Pectinophora gossypiella (Saund.) (Lep., Gelechiidae), on the occurrence of other arthropods, and on yields
Journal of Applied Entomology - Zeitschrift für angewandte Entomologie 125 (6), 327-331
Abstract: In 1999, in the Governorate of Fayum, Egypt, an organically managed area of 66 ha (33 ha of cotton) was subjected to pheromone mating disruption (MD) in order to control Pectinophora gossypiella (PBW). Tripherone-PecGos dispensers (Trifolio-M Comp., Lahnau, Germany), evaporating 0.7 mg pheromone per day, were applied, at a density of 300 dispensers per hectare, in mid-June when the first bolls were forming. In a neighbouring area of conventional agriculture, no PBW-MD was used. Instead, two insecticides were sprayed in the cotton fields: Profenophos in early July, and Esfenvalerate in early August. Two cotton fields (0.5–1 ha each) were studied in each area. Boll infestation by PBW was low in the area with mating disruption, and significantly higher in the conventionally managed cotton, prior to insecticide use (June) and in August 1999. Bemisia tabaci, Aphis gossypii and Empoasca lybica infested conventional cotton in significantly higher numbers than organic cotton. Spiders proved to be more common in organically grown cotton (with PBW-MD) than in conventionally managed cotton (with mineral fertilizers and insecticides). The reasons of these differences are discussed. In 1998, the cotton yield had shown no differences between organically and conventionally managed farms (both used insufficient PBW-MD). However, in 1999, the yield from the organically grown cotton (with MD) was significantly (52%) more than that from conventionally managed cotton (with insecticides). In this study, PBW-MD proved to be superior to insecticides in several aspects.
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Link to article at publishers website
Database assignments for author(s): Thies Basedow

Research topic(s) for pests/diseases/weeds:
pheromones/attractants/traps
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Aphis gossypii	Cotton (Gossypium)	Egypt
	Bemisia tabaci	Cotton (Gossypium)	Egypt
	Jacobiasca lybica	Cotton (Gossypium)	Egypt
	Pectinophora gossypiella	Cotton (Gossypium)	Egypt