Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Published online 4 April 2007
Published in Agron J 99:715-722 (2007)
DOI: 10.2134/agronj2006.0221
© 2007 American Society of Agronomy
677 S. Segoe Rd., Madison, WI 53711 USA
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Nutrient Assessment of a Dryland Wheat Agroecosystem after 12 Years of Biosolids Applications

K. A. Barbarick* and J. A. Ippolito

Dep. of Soil and Crop Sci., Colorado State Univ., Fort Collins, CO, 80523-1170


Figure 1
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Fig. 1. Total wheat-grain yields for the first 6 yr (1993–1999), second 6 yr (1999–2005), and for 12 yr (1993–2005) of Littleton/Englewood biosolids application.

 

Figure 2
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Fig. 2. Littleton/Englewood biosolids and N fertilizer effects on the second 6 yr (1999–2005) grain N uptake by dryland wheat near Bennett, CO.

 

Figure 3
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Fig. 3. Littleton/Englewood biosolids and N fertilizer effects on cumulative 12 yr (1993–2005) grain N uptake by dryland wheat near Bennett, CO.

 





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