Table 1.

Soil collection sites

SiteManagement systemLocationSoil type
AFine fescue, no tillageSilverton, Oreg.Nekia silty clay loam (Xeric Haplohumult)
BTall fescue, no tillageLewisberg, Oreg.Amity silty clay loam (Argiaquic Xeric Argialboll)
C1Perennial ryegrass, conventional tillageTangent, Oreg.Woodburn silt loam (Aquultic Argixeroll)
C2Perennial ryegrass, no tillageTangent, Oreg.Woodburn silt loam (Aquultic Argixeroll)