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Published online 26 April 2006
Published in J Environ Qual 35:903-911 (2006)
DOI: 10.2134/jeq2005.0266
© 2006 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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Aerating Grassland before Manure Application Reduces Runoff Nutrient Loads in a High Rainfall Environment

L. J. P. van Vlieta, S. Bittmana,*, G. Derksenb and C. G. Kowalenkoa

a Pacific Agri-Food Research Centre, Agriculture and Agri-Food Canada, P.O. Box 1000, Agassiz, BC, Canada V0M 1A0
b Environmental Protection Branch, Environment Canada, 224 West Esplanade, North Vancouver, BC, Canada V7M 3H7


Figure 1
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Fig. 1. Monthly precipitation at Agassiz during the study period and the long-term (1961–1990) average.

 

Figure 2
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Fig. 2. Runoff volume during runoff events following manure application on aerated and unaerated (control) sloping grassland during four winter seasons in coastal British Columbia. Arrows indicate dates of manure application.

 

Figure 3
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Fig. 3. Suspended solid loads for runoff events following manure application on aerated and unaerated (control) sloping grassland during four winter seasons in coastal British Columbia. Arrows indicate dates of manure application.

 

Figure 4
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Fig. 4. Total Kjeldahl nitrogen (TKN) loads for runoff events following manure application on aerated and unaerated (control) sloping grassland during four winter seasons in coastal British Columbia. Arrows indicate dates of manure application.

 

Figure 5
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Fig. 5. Ammonium-N loads for runoff events following manure application on aerated and unaerated (control) sloping grassland during four winter seasons in coastal British Columbia. Arrows indicate date of manure application.

 





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