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Published online 1 March 2008
Published in J Environ Qual 37:535-541 (2008)
DOI: 10.2134/jeq2006.0386
© 2008 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
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Carbon Dioxide Efflux from Soil with Poultry Litter Applications in Conventional and Conservation Tillage Systems in Northern Alabama

T. Robersona, K. C. Reddya,*, S. S. Reddya, E. Z. Nyakatawaa, R. L. Raperb, D. W. Reevesc and J. Lemunyond

a Dep. of Natural Resources and Environmental Sciences, Alabama A&M Univ., P.O. Box 1208, Normal, AL 35762
b USDA-ARS, National Soil Dynamics Lab., 411 S. Donahue Drive, Auburn, AL 36832-5806
c USDA-ARS, J. Phil Campbell Sr. Natural Resource Conservation Center, 1420 Experiment Station Road, Watkinsville, GA 30677
d USDA-NRCS, Central National Technology Support Center, 501 W. Felix Street, FWFC, Bldg. 23, P.O. Box 6567, Fort Worth, TX 76115


Figure 1
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  		Fig. 1. Soil CO2 efflux in conventional tillage (CT), mulch till (MT), no till (NT), and bare fallow (BF) cotton production systems during a growing season and amount of rain fall (RF) + irrigation water (IW) received 1 wk before the day of CO2 efflux measurement, Belle Mina, AL, 2003, 2004, and 2006 (vertical bars = SE).

 

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  		Fig. 2. Influence of N sources on soil CO2 efflux, Belle Mina, AL, 2003, 2004, and 2006. Treatment means under each year followed by the same uppercase letter are not significantly different from each other at P ≤ 0.05. 100 ANN, ammonium nitrate at 100 kg N ha–1; 100 PLN, poultry litter at 100 kg N ha–1; 200 PLN, poultry litter at 100 kg N ha–1.

 




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