L A Harper
Affiliation: University of Georgia
- Direct measurements of methane emissions from grazing and feedlot cattleL A Harper
Southern Piedmont Conservation Research Unit, JPCSNRCC USDA Agricultural Research Service, Watkinsville, GA 30677, USA
J Anim Sci 77:1392-401. 1999....
- Nitrous oxide and ammonia fluxes in a soybean field irrigated with swine effluentR R Sharpe
Southern Piedmont Conservation Research Center, USDA ARS, Watkinsville, GA 30677, USA
J Environ Qual 31:524-32. 2002..5% of total N applied. The large losses of NH3 and N2O illustrate the difficulty of basing effluent irrigation schedules on N concentrations and that NH3 emissions can significantly contribute to N enrichment of the environment...
- Ammonia volatilization from surface-applied poultry litter under conservation tillage management practicesR R Sharpe
Southern Piedmont Conservation Research Unit, USDA ARS, 1420 Experiment Station Road, Watkinsville, GA 30677, USA
J Environ Qual 33:1183-8. 2004..Application of poultry to conservation-tilled cropland immediately before rainfall events would reduce N losses to the atmosphere but could also increase NO(3) leaching and runoff to streams and rivers...