David J. Wittry, Ph.D.

Affiliations: 
2002 Iowa State University, Ames, IA, United States 
Area:
Soil Science Agriculture, Agronomy Agriculture
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Antonio P. Mallarino grad student 2002 Iowa State
 (Uniform and variable-rate fertilizer and manure phosphorus for the corn -soybean rotation.)
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Publications

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Klatt JG, Mallarino AP, Downing JA, et al. (2003) Soil Phosphorus, Management Practices, and Their Relationship to Phosphorus Delivery in the Iowa Clear Lake Agricultural Watershed Journal of Environmental Quality. 32: 2140-2149
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