Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 9/14/2004
Publication Date: 11/3/2004
Citation: Osborne, L.E., Smolik, J., Osborne, S.L. 2004. Nematode community dynamics in no-till crop rotations for the northern great plains [abstract]. Joint meeting of ASA, CSSA, SSSA with the Candadian Society of Soil Science, October 31-November 4, 2004. Seattle, WA.
Technical Abstract: Nematode communities in crop soils are highly variable in their composition and stability. Populations and community composition are influenced by many factors including the plant and microbe communities as well as crop residues in the soil. Nematode populations were measured in a study investigating alternatives to typical corn-soybean rotations practiced throughout much of the Great Plains. The study includes eight four-year rotation schemes and one three-year scheme, incorporating nine different crops (eight unique species) and are compared to a two-year, corn-soybean rotation. To assess the nematode community dynamics in these rotations, two samplings will be conducted per growing season (at planting, and post-harvest) for at least four years. Results of the first sampling are presented, and show dramatic differences in community composition. Nematodes were extracted, enumerated microscopically and identified to the superfamily, family, or the generic level. Nematode populations present included were organized by trophic groups including phytoparasitic, mycophagous, bacteriophagous, predaceous, and omnivorous.