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Published online 31 May 2006
Published in J Environ Qual 35:1088-1100 (2006)
DOI: 10.2134/jeq2005.0380
© 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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Demonstration of Methods to Reduce E. coli Runoff from Dairy Manure Application Sites

Donald W. Mealsa,* and David C. Braunb

a Ice.Nine Environmental Consulting, 84 Caroline Street, Burlington, VT 05401
b Stone Environmental, Inc., 535 Stone Cutters Way, Montpelier, VT 05602


Figure 1
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  		Fig. 1. Map showing locations of hayland and cornland study sites.

 

Figure 2
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  		Fig. 2. Schematic of plot layouts for hayland and cornland experiments. Plots were arranged to accommodate berms and drainage ditches that isolated plots from up-gradient runoff and to achieve consistent slope among plots.

 

Figure 3
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  		Fig. 3. Levels of E. coli in hayland plot runoff by treatment factors and interactions. Error bars represent ±1 standard deviation; bars labeled with different letter(s) differ significantly (P ≤ 0.1). In (C), treatment codes 0, 30, and 90 indicate age of applied manure in days; H (high) and L (low) indicate vegetation height. In (D), treatment codes H and L indicate high and low vegetation; codes 1 and 3 indicate delay between manure application and simulated rainfall in days.

 

Figure 4
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  		Fig. 4. Levels of E. coli in cornland plot runoff by treatment factors and interactions. Error bars represent ±1 standard deviation; bars labeled with different letter(s) differ significantly (P ≤ 0.1). In (C), treatment codes 0, 30, and 90 indicate age of applied manure in days; codes 1 and 3 indicate delay between manure application and simulated rainfall in days. In (D), treatment codes I and N indicate manure incorporated or not incorporated; codes 1 and 3 indicate delay between manure application and simulated rainfall in days.

 




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Copyright © 2006 by the American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America.