Lowry A Harper

Summary

Publications

  1. doi request reprint Ammonia emissions from broiler production in the San Joaquin Valley
    L A Harper
    Lowry A Harper Consulting Company, Watkinsville, GA 30677, USA
    Poult Sci 89:1802-14. 2010
  2. ncbi request reprint The effect of biofuel production on swine farm methane and ammonia emissions
    Lowry A Harper
    Lowry A Harper Consulting Co, Trace Gas Emissions Consulting, P O Box 772, Watkinsville, GA 30677, USA
    J Environ Qual 39:1984-92. 2010
  3. ncbi request reprint Nitrogen cycling through swine production systems: ammonia, dinitrogen, and nitrous oxide emissions
    Lowry A Harper
    Southern Piedmont Conservation Research Unit, JPCSNRCC, USDA ARS, 1420 Experiment Station Road, Watkinsville, GA 30677, USA
    J Environ Qual 33:1189-201. 2004
  4. ncbi request reprint Ammonia emissions from Swine waste lagoons in the Utah great basin
    Lowry A Harper
    Southern Piedmont Conservation Research Unit JPCSNRCC, USDA ARS, 1420 Experiment Station Road, Watkinsville, GA 30677, USA
    J Environ Qual 35:224-30. 2006
  5. ncbi request reprint Nitrous oxide and ammonia fluxes in a soybean field irrigated with swine effluent
    R R Sharpe
    Southern Piedmont Conservation Research Center, USDA ARS, Watkinsville, GA 30677, USA
    J Environ Qual 31:524-32. 2002
  6. ncbi request reprint Ammonia emissions from swine houses in the southeastern United States
    Lowry A Harper
    Southern Piedmont Conservation Research Unit, USDA ARS JPCSNRCC, 1420 Experiment Station Road, Watkinsville, GA 30677, USA
    J Environ Qual 33:449-57. 2004
  7. ncbi request reprint Ammonia volatilization from surface-applied poultry litter under conservation tillage management practices
    R R Sharpe
    Southern Piedmont Conservation Research Unit, USDA ARS, 1420 Experiment Station Road, Watkinsville, GA 30677, USA
    J Environ Qual 33:1183-8. 2004

Collaborators

Detail Information

Publications7

  1. doi request reprint Ammonia emissions from broiler production in the San Joaquin Valley
    L A Harper
    Lowry A Harper Consulting Company, Watkinsville, GA 30677, USA
    Poult Sci 89:1802-14. 2010
    ..8 and 8.3% of feed N as NH(3)-N, respectively, or an annual average of 8.1%...
  2. ncbi request reprint The effect of biofuel production on swine farm methane and ammonia emissions
    Lowry A Harper
    Lowry A Harper Consulting Co, Trace Gas Emissions Consulting, P O Box 772, Watkinsville, GA 30677, USA
    J Environ Qual 39:1984-92. 2010
    ..These studies show that what is considered an environmentally friendly technology had mixed results and that all components of a system should be studied when making changes to existing systems...
  3. ncbi request reprint Nitrogen cycling through swine production systems: ammonia, dinitrogen, and nitrous oxide emissions
    Lowry A Harper
    Southern Piedmont Conservation Research Unit, JPCSNRCC, USDA ARS, 1420 Experiment Station Road, Watkinsville, GA 30677, USA
    J Environ Qual 33:1189-201. 2004
    ..Nitrogen input and output in the production system were evaluated, and 95% of input N was accounted for as output N from the system...
  4. ncbi request reprint Ammonia emissions from Swine waste lagoons in the Utah great basin
    Lowry A Harper
    Southern Piedmont Conservation Research Unit JPCSNRCC, USDA ARS, 1420 Experiment Station Road, Watkinsville, GA 30677, USA
    J Environ Qual 35:224-30. 2006
    ..Published estimates of NH3 emissions from lagoons ranged from 36 to 70% of feed input (no error range) compared to our emissions determined from a process model of 9.8% with an estimated range of +/-4%...
  5. ncbi request reprint Nitrous oxide and ammonia fluxes in a soybean field irrigated with swine effluent
    R 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...
  6. ncbi request reprint Ammonia emissions from swine houses in the southeastern United States
    Lowry A Harper
    Southern Piedmont Conservation Research Unit, USDA ARS JPCSNRCC, 1420 Experiment Station Road, Watkinsville, GA 30677, USA
    J Environ Qual 33:449-57. 2004
    ....
  7. ncbi request reprint Ammonia volatilization from surface-applied poultry litter under conservation tillage management practices
    R 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...