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2776

7 janvier 2021 16:33

7 janvier 2021 16:33

Farming practices and the addition of chemical synthetic substances in conventional agroecosystems are detrimental mainly to natural enemies of phytophagous insects, diminishing the natural regulation of pest insects. On the other hand, in organic agriculture, biological processes and care of the environment are favoured, hence an increase in insect biodiversity is predicted in this type of systems. In this work, abundance, richness of insects and proportion of functional groups ZHUH FRPSDUHG WKURXJK D VLQJOH TXDQWLWDWLYH VDPSOLQJ RI LQVHFWV LQ KRUWLFXOWXUDO FURS ¿HOGV WKUHH under organic and three under conventional management practices. Insect species richness, total and IRU JXLOGV SK\WRSKDJRXV DQG HQWRPRSKDJRXV LQVHFWV ZHUH VLJQL¿FDQWO\ KLJKHU LQ RUJDQLF RUFKDUGV and also was the abundance of entomophagous insects. Richness and abundance of all insect orders (with exception of Homoptera abundance), were higher in orchards under organic management, being VLJQL¿FDWLYH WKH GLIIHUHQFHV IRU ULFKQHVV RI &ROHRSWHUD DQG ULFKQHVV DQG DEXQGDQFH RI +\PHQRSWHUD Similar tendencies were observed in data obtained through sweep net in weeds. These results suggest that organic practices increase the diversity of species, particularly that of natural enemies.

None

• AB - Modalité bio
• FREDO environnement
• FREDO lutte
• GEO Argentine
• predator
• agroecosystem
• biodiversité
• comparaison
• insect
• management
• natural enemies
• species richness

Neotropical Entomology

36

765-773

10/2007

1 octobre 2007

10.1590/S1519-566X2007000500019 Le DOI est une URL unique de référencement d'une publication. Il est donc plus fiable et permanent qu'une URL classique

1519-566X L’ISSN est un code de 8 chiffres servant à identifier les journaux, revues, magazines, périodiques de toute nature et sur tous supports, papier comme électronique.