title: Residual effects of sewage sludge applied to a clay soil on soil nitrate distribution with three different field management practices.
authors.affiliation: National Instrumentation Center for Environmental Management, College of Agriculture and Life Sciences, Seoul National University, Suwon 441-744, Korea.
authors.forename: S M
authors.initials: SM
authors.lastname: Lee
mesh_terms: D000383:Agriculture; D000538:Aluminum Silicates; D000077215:Clay; D004784:Environmental Monitoring; D005308:Fertilizers; D009566:Nitrates / Q000032:analysis*; D012037:Refuse Disposal; D012722:Sewage / Q000737:chemistry*; D012989:Soil Pollutants / Q000032:analysis*
chemical_list: D000538:Aluminum Silicates; D005308:Fertilizers; D009566:Nitrates; D012722:Sewage; D012989:Soil Pollutants; D000077215:Clay