David J. Wittry, Ph.D.
Affiliations: | 2002 | Iowa State University, Ames, IA, United States |
Area:
Soil Science Agriculture, Agronomy AgricultureGoogle:
"David Wittry"Parents
Sign in to add mentor| 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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| Mallarino AP, Wittry DJ. (2010) Crop yield and soil phosphorus as affected by liquid swine manure phosphorus application using variable-rate technology Soil Science Society of America Journal. 74: 2230-2238 |
| Mallarino AP, Barcos SR, Prater JR, et al. (2009) Timing of broadcast phosphorus fertilization for no-till corn and soybean Soil Science Society of America Journal. 73: 2143-2150 |
| Wittry DJ, Mallarino AP. (2004) Comparison of Uniform‐ and Variable‐Rate Phosphorus Fertilization for Corn–Soybean Rotations Agronomy Journal. 96: 26-33 |
| Mallarino AP, Wittry DJ. (2004) Efficacy of grid and zone soil sampling approaches for site-specific assessment of phosphorus, potassium, pH, and organic matter Precision Agriculture. 5: 131-144 |
| 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 |
| Mallarino AP, Haq MU, Wittry D, et al. (2001) Variation in Soybean Response to Early Season Foliar Fertilization among and within Fields Agronomy Journal. 93: 1220-1226 |
| Mallarino AP, Wittry DJ, Dousa D, et al. (1999) Variable‐Rate Phosphorus Fertilization: On‐Farm Research Methods and Evaluation for Corn and Soybean Precision Agriculture. 687-696 |