Published online 13 September 2006
Published in J Environ Qual 35:1960-1965 (2006)
DOI: 10.2134/jeq2005.0308
© 2006 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
Sorption of Atmospheric Ammonia by Soil and Perennial Grass Downwind From Two Large Cattle Feedlots
Xiying Haoa,*,
Chi Changa,
H. Henry Janzena,
George Claytonb and
Brett R. Hilla
a Agricultural and Agri-Food Canada, Lethbridge Research Center, 5403 1st Ave S., Lethbridge, Alberta, T1J 4B1, Canada
b Agricultural and Agri-Food Canada, Lacombe Research Centre, 6000 C and E Trail, Lacombe, Alberta, T4L 1W1, Canada

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Fig. 1. Study sites layout (distance was taken from the NE corner of feedlots).
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Fig. 2. Weekly rate of atmospheric NH3 absorption by soil downwind from 25 000-head cattle feedlots (June-October 2002).
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Fig. 3. Soil NO3-N contents downwind from two cattle feedlots (a) old lot and (b) new lot.
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Fig. 4. (a) Soil and (b) perennial grass TN content downwind from feedlots.
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Copyright © 2006 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.