caa a22 4500 386316120 CHVBK 20180307111606.0 cr unu---uuuuu 161130s1988 xx s 000 0 eng 10.1017/S0889189300002083 doi S0889189300002083 pii (NATIONALLICENCE)cambridge-10.1017/S0889189300002083 Weed seed destruction by arthropods and rodents in low-input soybean agroecosystems [Elektronische Daten] Weed seed consumption experiments involving comparison of rates of seed loss by seed feeders were conducted over a five-week period in low-input (no insecticide, low herbicide usage) conventional- and no-tillage soybean agroecosystems. Seeds of four broadleaf weed species (ragweed [Ambrosia artemisiifolia L.], pigweed [Amaranthus retroflexus L.], sicklepod [Cassia obtusifolia L.], and jimsonweed [Datura stramonium L.]) and one grain crop species (wheat [Triticum aestivum L.]) were provided in a free choice design at densities of 10, 25, and 50 seeds/24 cm3. Approximately 2.3 times more seeds overall, and 1.4 times more large seeds as a group were consumed in notillage systems than in conventional-tillage systems. In our experimental low-input, notillage treatments, large ground beetles (Carabidae: Coleoptera) (15-25 mm) and mice preferentially fed on the larger seed species, while small carabids (< 15 mm), ants and crickets, fed almost exclusively on the smaller seed species. Carabid beetles were responsible for more than half of all seeds consumed. Laboratory and field studies indicated that ground beetles selectively consumed specific seed species. In conventional-tillage, ants were one of the dominant consumers of seeds, suggesting different patterns of resource partitioning in each tillage system. We suggest that selective feeding by arthropod seed feeders, in combination with their high number, could affect the species composition and possibly the abundance of weeds in low-input, no-tillage agroecosystems. Copyright © Cambridge University Press 1988 ants nationallicence beetles nationallicence mice nationallicence selective seed eating nationallicence conventional tillage nationallicence no-till nationallicence no insecticide nationallicence minimal herbicide nationallicence Brust Gerald E. Graduate Student, Department of Entomology, Box 7634, North Carolina State University, Raleigh, NC 27695. House Garfield J. Assistant Professor, Department of Entomology, Box 7634, North Carolina State University, Raleigh, NC 27695. American Journal of Alternative Agriculture Cambridge University Press 3/1(1988), 19-25 0889-1893 3:1<19 1988 3 AJA https://doi.org/10.1017/S0889189300002083 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0889189300002083 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Brust Gerald E. Graduate Student, Department of Entomology, Box 7634, North Carolina State University, Raleigh, NC 27695 NATIONALLICENCE 700 1- House Garfield J. Assistant Professor, Department of Entomology, Box 7634, North Carolina State University, Raleigh, NC 27695 NATIONALLICENCE 773 0- American Journal of Alternative Agriculture Cambridge University Press 3/1(1988), 19-25 0889-1893 3:1<19 1988 3 AJA CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge