Reference : Monitoring of the entomological diversity in a pesticide free orchard:Investigation i...
Scientific congresses and symposiums : Paper published in a journal
Life sciences : Entomology & pest control
Monitoring of the entomological diversity in a pesticide free orchard:Investigation in the Gembloux agricultural University conservatory
Poligui, René Noël [Université de Liège - ULiège > > > Form. doct. sc. agro. & ingé. biol.]
Haubruge, Eric mailto [Université de Liège - ULiège > Services administratifs généraux > Vice-Recteur de Gembloux Agro Bio Tech >]
Francis, Frédéric mailto [Université de Liège - ULiège > Sciences agronomiques > Entomologie fonctionnelle et évolutive >]
Communications in Agricultural and Applied Biological Sciences
Coupure links 653
61st International symposium on crop protection
May 19, 2009
Faculty of Bioscience Engineering ,Ghent University
[en] biodiversity ; orchard conservatory ; aphidophagous guild ; aphididae ; integrated pest management
[en] In orchards, the fruit production is currently oriented to integrated pest management. In order to develop efficient pest control strategy by using entomophagous beneficial and lowering the application of pesticides, sufficient knowledge of entomological populations is needed. Here, a systematic monitoring of insect diversity and abundance in a conservatory orchard of Gembloux was performed. Combining yellow traps and visual observations, 19 pest and 34 beneficial families were identified among the 10766 and 3985 insects caught in yellow traps and visual observations respectively. Calculation of diversity indices allowed us to demonstrate the variability according to fruit tree species and insects observation method. Highest insects diversity was registered in apple, then in cherry and finally in the apple-pear association and plum. Pests and beneficials represented 27% and 39% of the insect collections respectively. Aphids represented from 81% to 95%of pests depending on fruit tree species and observation method. The predominant specie was Brachycaudus helychrysi (Kaltenbach). Aphidophagous guild was largely present and mainly constituted by coccinellids and hoverflies. Harmonia axyridis Pallas and Episyrphus balteatus De Geer were the most abundant. Aphididae was found to be the most common orchard pests with a range of related aphidophagous beneficials. These results highlight the need leading to potential reasoning.
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