An integrated study of nutrient leaching and greenhouse gas emissions.
Tyson Ochsner and Rodney Venterea. USDA-ARS, USDA-ARS, 1991 Buford Circle, St. Paul, MN 55108
Nutrient leaching and greenhouse gas emission are two of the primary environmental impacts of crop production. These processes have been studied at great length separately, but few integrated studies of leaching and greenhouse gas emission have been conducted. We measured nutrient leaching and greenhouse gas emissions simultaneously in field plots under continuous corn and corn-soybean rotation. Fertilizer treatments were urea and anhydrous ammonia at equivalent N rates. Effects of fertilizer form and crop rotation on nutrient leaching and greehouse gas emissions will be presented. Physical and environmental controls on nutrient leaching and greenhouse gas emissions will be examined.