Reference : Effects of insecticide treatments on insect density and diversity in vegetable open f...
Scientific journals : Article
Life sciences : Biochemistry, biophysics & molecular biology
http://hdl.handle.net/2268/34189
Effects of insecticide treatments on insect density and diversity in vegetable open fields.
English
Colignon, P. [> > > >]
Hastir, Pierre [> > > >]
Gaspar, Charles [Université de Liège - ULg > > Immunologie et vaccinologie >]
Francis, Frédéric mailto [Université de Liège - ULg > Gembloux Agro-Bio Tech > Gembloux Agro-Bio Tech >]
2001
Mededelingen van de Faculteit Landbouwkundige en Toegepaste Biologische Wetenschappen (Rijksuniversiteit te Gent)
66
2a
403-411
Yes (verified by ORBi)
International
1373-7503
[en] Animals ; Belgium ; Biomass ; Female ; Insecticides ; Insects/classification ; Male ; Pest Control, Biological ; Population Density ; Population Dynamics ; Vegetables/parasitology ; Vicia faba/parasitology
[en] Vegetable open field areas increased for 15 years in Wallonia, mainly in Hesbaye. To be in accordance with quality standards, especially in terms of agro-chimical residues (R.M.L.), biological pest control was developed and allowed to reduce the insecticide use, leading to have safer fresh products. Among cultivated species in Wallonia, leguminous crops represent more than 85% of the vegetable production. To assess the impact of insecticide treatment on both pests (mainly aphids) and beneficial insects (predators and parasitoids), broad bean (Vicia faba L.) fields were investigated during all the production duration. Twelve fields between Waremme and Hannut were visited weakly from May to July. In each field, control untreated and treated plots were investigated. Insects were caught using yellow traps and determined until the family level. Approximately 90.000 insects belonging to 59 major families (99% of captures) and 64 minor families were identified. These results showed that biodiversity in terms of family numbers was significantly higher in unsprayed plots. In addition, biodiversity and biomass (insect density) increased gradually during the season. Evaluation of pest and beneficial diversity and density was discussed in relation to aphicid (lambda-cyhalothrin, pirimicarb) treatments and the development of I.P.M. program in vegetable crops.
http://hdl.handle.net/2268/34189
also: http://hdl.handle.net/2268/73454

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