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Nitrous Oxide and Ammonia Fluxes in a Soybean Field Irrigated with Swine Effluent

R. R. Sharpe* and L. A. Harper

Southern Piedmont Conservation Research Center, USDA-ARS, 1420 Experiment Station Road, Watkinsville, GA 30677



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  		Fig. 1. Nitrous oxide flux and rainfall from a soybean field before irrigation with swine waste effluent, day of year (DOY) 200 to 236.

 


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  		Fig. 2. Time course for (A) N2O flux and irrigation (Irr) with effluent, (B) soil moisture and rainfall, and (C) soil temperature from a soybean field.

 


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  		Fig. 3. Time course for NH3 flux and irrigation (Irr) with effluent from day of year (DOY) 237 to 250.

 


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  		Fig. 4. Time course for (A) NH3 flux, (B) differential (delta) NH3 concentrations at 60- and 160-cm heights, and (C) wind direction and windspeed before effluent irrigation from day of year (DOY) 210 to 213.

 


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  		Fig. 5. Time course for (A) NH3 flux, (B) differential (delta) NH3 concentrations at 60- and 160-cm heights, and (C) wind direction and windspeed before effluent irrigation from day of year (DOY) 217 to 221.

 




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Soil Science Society of America Journal Journal of Plant Registrations The Plant Genome
Copyright © 2002 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.