• Extension Publications
• Newsletter Articles
• Conference Proceedings and Reports
• Abstracts
• Presentations
• Links

Extension Publications (pdf)

• PM 1688 A General Guide for Crop Nutrient and Limestone Recommendations in Iowa
• PM 1310 Interpretation of Soil Test Results
• NMEP 2 Nutrient Management: Phosphorus Application
• SP 126 Interpreting Mehlich-3 Soil Test Results
• PM 1714 Nitrogen Fertilizer Recommendations for Corn in Iowa

Newsletter Articles

• Use new potassium soil test and fertilizer recommendations (10/2003)
• Interpreting results of the Mehlich-3 ICP soil phosphorus test (11/2003)
• Nitrate testing: early versus late spring (2/2001)
• Soil testing and available phosphorus (9/2000)
• Effective use of precision agriculture for improved management of phosphorus, potassium and lime (5/1999)
• Interpreting P and K soil test results (1/1999)

Conference Proceedings and Reports

• Mallarino, A.P. 2002. Revised Iowa P and K recommendations: New soil-test K interpretations and support for a new soil P test. p. 161-169. In The Integrated Crop Management Conf. Proceedings. Dec. 4-5, Ames, IA. Iowa State Univ. Extension. (pdf)
• Mallarino, A.P., D.J. Wittry, and P.A. Barbagelata. 2002. Iowa soil-test field calibration research update: potassium and the Mehlich-3 ICP phosphorus test. p. 29-39. In North Central Extension-Industry Soil Fertility Conference. Proceedings. Vol. 18. Des Moines, IA. (pdf)
• Sawyer, J.E. 1999. Making every fertilizer dollar pay. p. 63-78. In Proc. Integrated Crop Manag. Conf., Ames, IA. 1-2 Dec. Iowa State Univ., Ames, IA. (pdf)
• Mallarino, A.P. 1999. Phosphorus and Potassium Management For Cost-Effective Soybean Production. p. 251-258. In World Soybean Research Conf. VI. Proceedings. Aug. 4-7, 1999. Chicago, IL.
• Mallarino, A.P., and D. Wittry. 1999. Challenges for making intensive soil sampling and variable-rate technology pay. p.104-109. In North Central Extension-Industry Soil Fertility Conference. Proceedings. Vol. 15. St. Louis, MO.
• Sawyer, J.E. 1998. Managing crop nutrients and limestone with reduced financial resources. p. 33-36. In Proc. Integrated Crop Manag. Conf., Ames, IA. 17-18 Nov. Iowa State Univ., Ames, IA. (pdf)
• Mallarino, A.P. 1998. The Olsen, Bray-1, and Mehlich-3 P tests: Correlations and field calibration for corn in Iowa soils. Special Workshop. Oct. 18, 1998. ASA Annual Meetings. Baltimore, MD.
• Mallarino, A.P. 1998. Soil test interpretations of Mehlich-3 P and K for corn. Soil and Plant Analyst Workshop. Proceedings. Nov. 10-11, 1998. St. Louis, MO.
• Mallarino, A.P., and D.J. Dunn. 1995. Soil test interpretations for Iowa high pH soils. p. 175-180. In The integrated crop management conference. Proceedings. 29-30 Nov. Iowa State Univ. Extension.

Abstracts

• Mallarino, A.P., and G.W. Rehm. 2000. Successful use of correlation and calibration research produces improved P and K recommendations in conservation tillage. p. 355. In Agronomy Abstracts, ASA, Madison, WI.
• Wittry, D.J., A.P. Mallarino, M. Bermudez*, and A. Bianchini*. 2000. Soil P and soybean response to variable rate manure application based on soil test P. p. 366. In Agronomy Abstracts, ASA, Madison, WI.
• Mallarino, A.P. 1999. Routine and bioavailable soil phosphorus testing for agronomic recommendations. p. 319. In Agronomy Abstracts, ASA, Madison, WI.
• Mallarino, A.P., and A. Atia, and R. Borges. 1999. Field calibration for corn of resin membrane and Mehlich-3 soil P tests. p. 319. In Agronomy Abstracts, ASA, Madison, WI.
• Mallarino, A.P. 1998. Field calibration of the Mehlich-3 extractant for P for corn and soybean. p. 316. In Agronomy Abstracts, ASA, Madison, WI.

Photo Gallery

Presentations

Links

• ISU Research and Demonstration Farms Annual Progress Reports
• ISU Soil and Plant Analysis Laboratory

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