Comparison of soil arthropods and earthworms from conventional and no-tillage agroecosystems |
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Authors: | Garfield J House Robert W Parmelee |
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Institution: | Department of Entomology, North Carolina State University, Box 7613, Raleigh, NC 27695-7613 U.S.A.;Institute of Ecology, University of Georgia, Athens, GA 30602 U.S.A. |
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Abstract: | Soil-arthropod and earthworm densities (number m−2) were higher (P < 0.05) under no-tillage than conventional tillage practices. Enchytraeid worms were higher in conventional tillage. Two predaceous groups, ground beetles (Carabidae: Coleoptera) and spiders (Araneae), comprised more than one-half of all soil macroarthropods collected. All major microarthropod suborders (Oribatids, Prostigmatids, Mesostigmatids, and the order Collembola) were higher (P < 0.01) under no-tillage than conventional tillage. High soil-arthropod and earthworm densities under no-tillage systems suggest an expanded and beneficial involvement for these soil fauna in crop-residue-decomposition processes. |
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