My Account: Log In | Join | Renew
Search
Author
Title
Vol.
Issue
Year
1st Page

Abstract

 

This article in JEQ

  1. Vol. 33 No. 4, p. 1183-1188
     
    Received: Feb 25, 2003
    Published: July, 2004


    * Corresponding author(s): rsharpe@uga.edu
 View
 Download
 Alerts
 Permissions
 Share

doi:10.2134/jeq2004.1183

Ammonia Volatilization from Surface-Applied Poultry Litter under Conservation Tillage Management Practices

  1. R. R. Sharpe *,
  2. H. H. Schomberg,
  3. L. A. Harper,
  4. D. M. Endale,
  5. M. B. Jenkins and
  6. A. J. Franzluebbers
  1. Southern Piedmont Conservation Research Unit, USDA-ARS, 1420 Experiment Station Road, Watkinsville, GA 30677

Abstract

Land application of poultry litter can provide essential plant nutrients for crop production, but ammonia (NH3) volatilization from the litter can be detrimental to the environment. A multiseason study was conducted to quantify NH3 volatilization rates from surface-applied poultry litter under no-till and paraplowed conservation tillage managements. Litter was applied to supply 90 to 140 kg N ha−1 Evaluation of NH3 volatilization was determined using gas concentrations and the flux-gradient gas transport technique using the momentum balance transport coefficient. Ammonia fluxes ranged from 3.3 to 24% of the total N applied during the winter and summer, respectively. Ammonia volatilization was rapid immediately after litter application and stopped within 7 to 8 d. Precipitation of 17 mm essentially halted volatilization, probably by transporting litter N into the soil matrix. Application of poultry to conservation-tilled cropland immediately before rainfall events would reduce N losses to the atmosphere but could also increase NO3 leaching and runoff to streams and rivers.

  Please view the pdf by using the Full Text (PDF) link under 'View' to the left.

Copyright © 2004. American Society of Agronomy, Crop Science Society of America, Soil Science SocietyASA, CSSA, SSSA