Agronomy Journal Journal of Natural Resources and Life Sciences Education
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Figure 2


Fig. 2. Amino sugar–N test (ASNT) values from four N rate trials sampled throughout the year in 2002 and 2003 at two soil depths. Vertical dashed lines show the change in ASNT values between 14 d sampling periods in fall, early spring, and late spring sampling periods.





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Journal of Natural Resources
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