JEQ Journal of Natural Resources and Life Sciences Education
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Fig. 2. Median Mehlich 3–extractable P concentrations of soils used for established warm- and cool-season grasses (a) and row-crop (b) production from 1995 to 2002 from University of Arkansas soil test data summaries (DeLong et al., 1996, 1997, 1998, 1999, 2000, 2001, 2002, and 2003).





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The SCI Journals Agronomy Journal Crop Science
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Journal of Natural Resources
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Soil Science Society of America Journal