Orchard floor management (OFM) impacts nutrient fluxes among faunal populations, soil microorganisms and trees. Soil nematodes, which span multiple trophic levels, have been shown to reflect nutrient dynamics and functional diversity in soils. Two indices using nematode community data are of particular interest: the enrichment index (EI), a measure of the relative abundance of enrichment opportunists and the structural index (SI), a measure of the complexity of the nematode community. The effects of two OFM strategies during establishment (trees planted 2005) of organic sweet cherry research plots in Corvallis and Hood River, OR on nematode community indicators, soil N status, and overall tree nutrient status were examined. Nematode community structure and the calculated indices were determined three times since treatment implementation. Additionally, samples from eight mature commercial orchards were analyzed in 2005 and 2006 to determine how orchard management, soil type, and climate affect nematode community composition. No significant treatment effects on EI and SI were detected at the research sites. We also found no significant correlation between EI or SI and soil N status. However, total nematode counts were positively correlated with mineralizable N (r=0.6058, p<0.0022). Plotting SI vs. EI revealed a clustering of commercial orchards from the Willamette Valley that separated from samples collected in Hood River/The Dalles areas. In general, Willamette Valley samples had greater SI values than those from the Hood River region.