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Published online 11 May 2005
Published in J Environ Qual 34:979-986 (2005)
DOI: 10.2134/jeq2004.0360
© 2005 American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Dairy Farm Effluent Effects on Urine Patch Nitrous Oxide and Carbon Dioxide Emissions

Tim J. Clougha,* and Francis M. Kelliherb

a Soil, Plant and Ecological Sciences Division, PO Box 84, Lincoln University, Canterbury, New Zealand
b Landcare Research, PO Box 69, Lincoln Canterbury, New Zealand



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  		Fig. 1. Fluxes of (a) N2O-N and (b) N2–15N over time. Data points are treatment means (n = 4). Error bars associated with the urine treatment are +LSD at p < 0.05 for treatment comparisons. DFE, dairy farm effluent; UDFE, urine + dairy farm effluent.

 


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  		Fig. 2. Changes in soil inorganic N concentrations over time. Data points are treatment means (n = 3). Error bars associated with the control treatment are +LSD at p < 0.05 for treatment comparisons. Error bars are smaller than symbols between Days 10 to 30. DFE, dairy farm effluent; UDFE, urine + dairy farm effluent.

 


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  		Fig. 3. Changes in (a) soil surface pH and (b) CO2 flux over time. Data points are treatment means (n = 4). Error bars associated with the control treatment are +LSD at p < 0.05 for treatment comparisons. DFE, dairy farm effluent; UDFE, urine + dairy farm effluent.

 




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The SCI Journals Agronomy Journal Crop Science
Journal of Natural Resources
and Life Sciences Education		 Vadose Zone Journal
Soil Science Society of America Journal Journal of Plant Registrations The Plant Genome
Copyright © 2005 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.