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Published online 1 May 2008
Published in J Environ Qual 37:1227-1237 (2008)
DOI: 10.2134/jeq2007.0392
© 2008 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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Antibiotic Losses in Leaching and Surface Runoff from Manure-Amended Agricultural Land

Holly Dollivera and Satish Guptab,*

a Dep. of Plant and Earth Science, Univ. of Wisconsin-River Falls, 410 S. 3rd St., River Falls, WI 54022
b Dep. of Soil, Water, and Climate, Univ. of Minnesota, 1991 Upper Buford Circle, St. Paul, MN 55108


Figure 1
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  		Fig. 1. Effect of season, tillage treatment, and manure source on water percolation by year. Bars with the same letter within a manure source and year represent means that are not statistically different (P < 0.1). GS, growing season; NGS, non-growing season.

 

Figure 2
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  		Fig. 2. Effect of season, tillage treatment, and manure source on water runoff by year. Bars with the same letter within a manure source and year represent means that are not statistically different (P < 0.1). GS, growing season; NGS, non-growing season.

 

Figure 3
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  		Fig. 3. Average annual number of chlortetracycline, monensin, and tylosin detections in leachate (A) and runoff (B) by month.

 

Figure 4
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  		Fig. 4. Annual losses of monensin and tylosin in leachate by tillage treatment and manure source. There were no losses of chlortetracycline in leachate during the study period. Error bars indicate SD of the mean.

 

Figure 5
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  		Fig. 5. Annual losses of monensin and tylosin in runoff by tillage treatment and manure source. Error bars indicate SD of the mean.

 

Figure 6
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  		Fig. 6. Total (leaching and runoff) annual losses of chlortetracycline, monensin, and tylosin by manure source.

 




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