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Extension Publications (pdf)

• PM 1688 A General Guide for Crop Nutrient and Limestone Recommendations in Iowa
• PM 1310 Interpretation of Soil Test Results
• Agricultural Phosphorus Management and Water Quality Protection in the Midwest
  
• NMEP 2 Nutrient Management: Phosphorus Application
• SP 126 Interpreting Mehlich-3 Soil Test Results
• PM 1993 Ten Questions about the Phosphorus (P) Index in Iowa

Newsletter Articles

• Interpreting results of the Mehlich-3 ICP soil phosphorus test (11/2003)
• Phosphorus and the Environment Newsletter Article Series
  • Why manage phosphorus (4/2000)
  • Phosphorus basics (8/2000)
  • Soil testing and available phosphorus (9/2000)
  • Management of phosphorus for crop production (10/2000)
  • Phosphorus in aquatic systems (12/2000)
  • Soil resources of phosphorus
  • Phosphorus and swine feeding (4/2001)
  • Phosphorus losses to surface water (5/2001)
  • Watershed-scale phosphorus management (7/2001)
  • Phosphorus - why the concern about water quality (8/2001)
• Corn and soybean responses to deep-band phosphorus and potassium (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., and J. Prater. 2007. Corn and soybean grain yield, phosphorus removal, and soil-test responses to long-term phosphorus fertilization strategies. In Proc. 19th Annual Integrated Crop Manag. Conf., Ames, IA. 28-29 Nov. 2007. Iowa State Univ., Ames, IA. (pdf)
• Mallarino, A.P., and D.J. Wittry. 2006. Variable-rate application for phosphorus and potassium: impacts on yield and nutrient management. p. 219-224. In Proc. 18th  Annual Integrated Crop Manag. Conf., Ames, IA. 29-30 Nov. 2006. Iowa State Univ., Ames, IA. (pdf)
• Mallarino, A.P., and R. Borges. 2005. Broadcast and deep band placement of phosphorus for soybeans managed with ridge tillage. Better Crops Plant Food 89(1):8-11. (pdf)
• Mallarino, A.P., M.U. Haq, and K. Pecinovsky. 2005. Runoff phosphorus loss as affected by tillage, fertilizer, and swine manure phosphorus management in corn-soybean production systems. p. 46-47. In Annual progress reports-2004. Northeast research and demonstration farm. ISRF04-13. Iowa State Univ., Ames, IA. (pdf)
• Mallarino, A.P., and D. Rueber. 2005. Phosphorus and potassium fertilization and placement methods for corn-soybean rotations managed with no-till and chisel plow tillage. p. 12-13. In Annual progress reports-2004. Northern Research and Demonstration farm. ISRF04-22. Iowa State Univ., Ames, IA. (pdf)
• Mallarino, A.P., and K. Pecinovsky. 2005. Phosphorus and potassium placement methods for corn and soybeans managed with no-till and chisel plow tillage. p. 44-45. In Annual progress reports-2004. Northeast research and demonstration farm. ISRF04-13. (pdf)
• Mallarino, A.P. 2004. On-farm implementation of the phosphorus index: Observed risk ratings and impacts on fertilizer and manure phosphorus management. p. 145-152. In The Integrated Crop Management Conf. Proceedings. Dec. 1-3, Ames, IA. Iowa State Univ. Extension. (pdf)
• Mallarino, A.P., and K. Pecinovsky. 2004. Long-term phosphorus and potassium fertilization strategies for corn-soybean rotations. p. 22-23. In Annual progress reports-2003. Northeast research and demonstration farm. ISRF03-13. Iowa State Univ., Ames, IA. (pdf)
• Kanwar, R., J. Baker, C. Pederson, A.P. Mallarino, J. Sawyer, and K. Pecinovsky. 2004. Impact of swine manure applications on nitrate and phosphorus in subsurface drainage water. p. 26-27. In Annual progress reports-2003. Northeast research and demonstration farm. ISRF03-13. Iowa State Univ., Ames, IA. (pdf)
• Mallarino, A.P., and D. Rueber. 2004. Long-term phosphorus fertilization for corn-soybean rotations. p. 12-13. In Annual progress reports-2003. Northern Research and Demonstration farm. ISRF03-22. Iowa State Univ., Ames, IA. (pdf)
• Mallarino, A.P., and D. Haden. 2004. Phosphorus and potassium placement for corn and soybeans managed with no-till and chisel-disk tillage. p. 14-15. In Annual progress reports-2003. Northwest research and demonstration farm. ISRF03-29,31. Iowa State Univ., Ames, IA. (pdf)
• Mallarino, A.P., B. Havlovic, and J. Butler. 2004. Phosphorus and potassium fertilizer placement for corn and soybeans managed with no-till and chisel-disk tillage. p. 19-20. In Annual progress reports-2003. Armstrong research and demonstration farm. ISRF00-12. Iowa State Univ., Ames, IA. (pdf)
• Mallarino, A.P., J. Sawyer, J. Klatt, R. Kanwar, C. Pederson, J. Baker, and K. Pecinovsky. 2003. Fertilizer and swine manure management systems: impacts on agronomic and environmental soil phosphorus tests and on phosphorus loss with subsurface drainage. Annual progress reports-2002. Northeast Research and Demonstration farm. ISRF02-13. Iowa State Univ., Ames, IA. (pdf)
• Mallarino, A.P. 2003. Starter and foliar fertilization. Are they needed to supplement primary fertilization? p. 113-120. In The Integrated Crop Management Conf. Proceedings. Dec. 3-4, Ames, IA. Iowa State Univ. Extension. (pdf)
• Mallarino, A.P. 2003. Using the Iowa phosphorus index for agronomic and environmental management of fertilizer and manure phosphorus. p. 121-126. In The Integrated Crop Management Conf. Proceedings. Dec. 3-4, Ames, IA. Iowa State Univ. Extension. (pdf)
• Kaiser, D.E., A.P. Mallarino, and M. Bermudez. 2003. In-furrow starter and broadcast phosphorus and potassium fertilization for corn. p. 186-189. In North-Central Extension-Industry Soil Fertility Conf. Proceedings. Vol. 19. Des Moines, IA. (pdf)
• Mallarino, A.P., and D. Rueber. 2003. Long-term evaluation of nitrogen, phosphorus, potassium, and lime requirements of continuous corn. p. 7-8 In Annual progress reports-2002. Northern Research and Demonstration farm. ISRF02-22. Iowa State Univ., Ames, IA. (pdf)
• Mallarino, A.P., and K. Van Dee. 2003. Phosphorus and potassium placement for corn and soybeans managed with no-till and chisel-plow tillage. Annual progress reports-2002. Northwest Research and Demonstration farm. ISRF02-34. Iowa State Univ., Ames, IA. (pdf)
• Klatt, J.G., A.P. Mallarino, and B.L. Allen. 2002. Relationships between soil phosphorus and phosphorus in surface runoff and subsurface drainage. An overview of ongoing research. p. 183-189. In North-Central Extension-Industry Soil Fertility Conf. Proceedings. Vol. 18. Des Moines, IA. (pdf)
• Mallarino, A.P., D. Wittry, and J. Klatt. 2001. Using the Iowa phosphorus index and variable-rate technology for effective agronomic and environmental phosphorus management. p. 151-158. In The Integrated Crop Management Conf. Proceedings. Dec. 5-6, 2001, Ames, IA. Iowa State Univ. Extension. (pdf)
• Mallarino, A.P., and D. Wittry. 2000. How can we make intensive soil sampling and variable-rate P and K fertilization cost-effective? p. 203-210. In The Integrated Crop Management Conf. Proceedings. Nov. 29-30, 2000. Ames, IA. Iowa State Univ. Extension. (pdf)
• Sawyer, J.E. and D. Barker. 1999. Foliar fertilization of corn with mono-potassium phosphate and urea. Final research report. Iowa State Univ., Ames, IA (pdf)
• Mallarino, A.P. 1999. Alternatives for P and K management: A role for deep banding and starter? p. 247-253. In The Integrated Crop Management Conference. Proceedings. Dec. 1-2, 1999. Iowa State Univ. Extension. 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. 1999. Soil phosphorus testing for crop production and environmental purposes. p. 185-192. In The Integrated Crop Management Conf. Proceedings. Dec. 1-2, 1999. Ames, IA. Iowa State Univ. Extension. (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., and D. Rueber. 1998. Evaluation of superphosphate and rock phosphate for a corn-oat-forage rotation. p. 6-8. In Annual progress reports-1997. Northern research and demonstration farm. ISRF97-22. Iowa State Univ., Ames, IA. (pdf)
• Mallarino, A.P., and Haq, M.U. 1998. Foliar fertilization of soybeans. p. 20-26. In North Central Extension-Industry Soil Fertility Conference. Proceedings. Vol. 14. St. Louis, MO. (pdf)
• 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., D.W. Barker, R. Borges, and J.C. North. 1998. Tillage and fertilizer placement for the corn-soybean rotation. p. 231-237. In The Integrated Crop Management Conference. Proceedings. Nov. 17-18, 1998. Iowa State Univ. Extension, Ames, IA.
• Mallarino, A.P., A. Atia, and R. Killorn. 1998. Bioavailability of phosphorus in manured soils. p. 611-616. In Animal Production Systems and the Environment International Conference. Proceedings Vol. II. July 19-22. Des Moines, IA.
• Mallarino, A.P., D.J. Wittry, D. Dousa, and P.N. Hinz. 1998. Variable-rate phosphorus fertilization: On-farm research methods and evaluation for corn and soybean. p. 687-696. In P.C. Robert et al. (ed.). Proceedings, 4d. Int. Conf. on Site-Specific Management for Agricultural Systems. July 19-22, 1998 Minneapolis, MN. ASA, SSSA, ASA. Madison, WI.

Abstracts

• Allen, B.L., A.P. Mallarino, J.L. Baker, and J.F. Lore. 2004. Lateral phosphorus movement through subsoil to tile drains. Agron. Abs. CD-ROM. ASA-CSSA-SSSA. Madison, WI.
• Bermudez, M., and A.P. Mallarino. 2003. Comparison of liquid N-P starter rates and mixtures applied in the furrow for corn: Grain yield, early growth, and early N-P uptake. Agron. Abs. CD-ROM. ASA-CSSA-SSSA. Madison, WI.
• Bermudez, M., and A.P. Mallarino. 2003. Does N or P starter fertilizer increase yield of no-till corn in high-testing soils? Agron. Abs. CD-ROM. ASA-CSSA-SSSA. Madison, WI.
• Allen, B.L., A.P. Mallarino, J.G. Klatt, J.L. Baker, and M. Camara. 2002. Soil and runoff phosphorus relationships for five typical Iowa soils. Agron. Abs. CD-ROM. ASA-CSSA-SSSA, Madison, WI.
• Bermudez, M., A.P. Mallarino, and D.J. Wittry. 2002. Grain yield and soil-test spatial variability under uniform or variable-rate phosphorus and potassium fertilization. Agron. Abs. CD-ROM. ASA-CSSA-SSSA, Madison, WI.
• Kaiser, D.E., A. P. Mallarino, and M. Bermudez. 2002. Influence of broadcast and in-the-furrow starter phosphorus and potassium fertilization on corn grain yield, early growth, and nutrient uptake. Agron. Abs. CD-ROM. ASA-CSSA-SSSA, Madison, WI.
• Klatt, J.G., A.P. Mallarino, J.L. Baker, J.C. Lorimor, R.S. Kanwar, and C.H. Pedersen. 2002. Phosphorus in soil and tile water as affected by fertilizer and manure applications to artificially drained Iowa fields. Agron. Abs. CD-ROM. ASA-CSSA-SSSA, Madison, WI.
• Allen, B.L., and A.P. Mallarino. 2001. Impact of long-term P applications on soil-test P, total soil P, and soil P saturation. Agron. Abs. CD-ROM. ASA-CSSA-SSSA, Madison, WI.
• Bermudez, M., A.P. Mallarino, and D. Wittry. 2001. Variable-rate phosphorus and potassium fertilization. 1. Impact on grain yield response. Agron. Abs. CD-ROM. ASA-CSSA-SSSA, Madison, WI.
• Hoeft, R.G., L.G. Bundy, A.P. Mallarino, and I. Daverede. 2001. Management practice effects on the potential for P loss from Midwestern soils. Agron. Abs. CD-ROM. ASA-CSSA-SSSA, 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., J.L. Baker, J.A. Downing, T.E. Fenton, G.A. Miller, J.E. Sawyer, B.M. Stewart, and J.L. Kovar. 2000. Development of a phosphorus assessment tool for Iowa. p. 328. In Agronomy Abstracts, ASA, Madison, WI.
• Bermudez, M., and A.P. Mallarino. 2000. Corn response to starter fertilizer and reduced tillage in fields with no-till management. p. 366. In Agronomy Abstracts, ASA, Madison, WI.
• Borges, R., and A.P. Mallarino. 2000. Interactions between starter and preplant P-K fertilization in no-till and ridge-till corn. p. 366. In Agronomy Abstracts, ASA, Madison, WI.
• Joern, B.C., A.P. Mallarino, L.G. Bundy, T. Bailey, B.M. Stewart, and J. Kaap. 2000. Phosphorus indexes: The Midwest experience. p. 329. In Agronomy Abstracts, ASA, Madison, WI.
• Klatt, J.G., and A.P. Mallarino. 2000. Soil P testing in manured soils in relation to P loss to water supplies. p. 367. In Agronomy Abstracts, ASA, Madison, WI.
• Stewart, B.M., and A.P. Mallarino. 2000. Iowa nutrient management standard revision process. p. 333. 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., and M. Ul-Haq. 1999. Soybean response to early foliar fertilization with N, P, K, S, and microniutrients. p. 257. In Agronomy Abstracts, ASA, Madison, WI.
• Borges, R., and A.P. Mallarino. 1999. Estimating P and K availability by plant analysis in corn-soybean fields receiving band fertilization. p. 318-319. In Agronomy Abstracts, ASA, Madison, WI.
• Borges, R., and A.P. Mallarino. 1999. Soil P and K stratification when deep-banding for the corn-soybean rotation. p. 319. In Agronomy Abstracts, ASA, Madison, WI.
• Bermudez, M., and A.P. Mallarino. 1999. Relationship between yield and early growth responses to starter fertilizer in no-till corn. p. 257. In Agronomy Abstracts, ASA, Madison, WI.

Links

• Iowa NRCS Phosphorus Index
• Iowa Department of Natural Resources, Animal Feeding Operations
• SERA 17 - Minimizing Phosphorus Losses from Agriculture
• ISU Research and Demonstration Farms Annual Progress Reports

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