Taxonomic and geographic distributions of background P concentration in soils are important when Taxonomic and geographic distributions of background P concendeciding whether a site is influenced by anthropogenic trations are important in assessing whether a soil P level is influenced by anthropogenic activities. This study was conducted to establish an input of P. Knowledge of background conce...

outcomes to readily measurable parameters, we should be able to better optimize management within different We tested the hypothesis that particulate organic matter (POM) regions and cropping systems. and aggregate dry mean weight diameter (DMWD) are related to This work follows up on previous findings suggesting fertilizer-use efficiency (FUE) and leaching susceptibility. Soil cores measures o...

introduction: the infiltration process is one of the most important components of the hydrologic cycle. quantifying the infiltration water into soil is of great importance in watershed management. prediction of flooding, erosion and pollutant transport all depends on the rate of runoff which is directly affected by the rate of infiltration. quantification of infiltration water into soil is also...

Surface water nitrate (NO~-) pollution from agricultural production is well established, although few studies have linked field N budgets, NO~loss in tile drained watersheds, and surface water NO~loads. This study was conducted to determine field sources, transport, and river export of NO~from an agricultural watershed. The Embarras River watershed at Camargo (48 173 ha) in east-central Illinoi...

Crop residues are among the cellulosic feedstocks expected to provide renewable energy. The availability of crop species and residue availability varies across the United States. Estimates of harvestable residues must consider all the residues produced during the entire rotation. Inclusion of fallow or low residue producing crops requires that less feedstock be harvested. A re-occurring theme a...