Extension Articles and Publications

Note: An asterisk indicates current or former Mallarino graduate students or research associates

Mallarino, A.P. 2005. Foliar fertilization of soybean: Is it useful to supplement primary fertilization? In The Integrated Crop Management Newsletter. IC-494 (15). http://www.ipm.iastate.edu/ipm/icm/ Iowa State Univ. Extension.

Mallarino, A.P. 2005. Plan carefully for potassium fertilization this fall. In The Integrated Crop Management Newsletter. IC-494 (23). http://www.ipm.iastate.edu/ipm/icm/. Iowa State Univ. Extension.

Mallarino, A.P. 2005. Potassium deficiency symptoms in corn and soybean: What can we do about them? In The Integrated Crop Management Newsletter. IC-494 (15). http://www.ipm.iastate.edu/ipm/icm/. Iowa State Univ. Extension.

Mallarino, A.P., B.L. Allen*, and M.U. Haq*. 2005. Manure management impacts on phosphorus loss with surface runoff and on-farm phosphorus index implementation. An overview of ongoing research. In Agriculture and the Environment Conf. Proceedings [CD-ROM]. March 8-9, 2005. Iowa State Univ. Extension, Ames, IA. (download pdf-file)

Mallarino, A.P., P.A. Barbagelata*, and D.J. Wittry*. 2005. Potassium fertilization guidelines in Iowa: Are they working and should applications be adjusted with high fertilizer prices? p. 161-167. In The Integrated Crop Management Conf. Proceedings. Nov. 30 to Dec. 1, Ames, IA. Iowa State Univ. Extension. (download pdf-file)

Mallarino, A.P., M.M. Barbazan*, and D.J. Wittry*. 2005. Swine manure phosphorus use for crop production in Iowa. p. 91-97. In North-Central Extension-Industry Soil Fertility Conf. Proceedings. Vol. 21. Des Moines, IA. (download pdf-file)

Mallarino, A.P., B.M. Stewart, J.L. Baker, J.A. Downing, and J.E. Sawyer. 2005. Background and basic concepts of the Iowa Phosphorus Index. A support document to the NRCS Field Office Tech. Note 25. Revised June 2005. Available online at http://www.ia.nrcs.usda.gov/technical/Phosphorus/phosphorusstandard.html

Mallarino, A.P. 2004. Revision of potassium soil-test interpretations and fertilizer recommendations. In Indiana Crop Advisers Convention. Proceedings. December 14-16, Indianapolis, IN. (download pdf-file)

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. (download pdf-file)

Mallarino, A.P., P.A. Barbagelata*, and D.J. Wittry*. 2004. Soil-test potassium field calibrations for soybean Iowa interpretations and research update. p. 67-70. In North-Central Extension-Industry Soil Fertility Conf. Proceedings. Vol. 20. Des Moines, IA. (download pdf-file)

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. (download pdf-file)

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. (download pdf-file)

Mallarino, A.P. 2003. Interpreting results of the Mehlich-3 ICP soil phosphorus test. The Integrated Crop Management Newsletter. IC-490 (24). Iowa State Univ. Extension.

Mallarino, A.P. 2003. Use new potassium soil test and fertilizer recommendations. The Integrated Crop Management Newsletter. IC-490 (23). Iowa State Univ. Extension.

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. (download pdf-file)

Mallarino, A.P., J.E. Sawyer, J. Lundvall, and M.M. Barbazan*. 2003. Crop and soil response to liquid swine manure phosphorus application. In Odor and Nutrient Management Newsletter. EDC-129-20, Vol. 6, Issue 2. Iowa State University Extension. Ames, IA.

Sawyer, S., A.P. Mallarino, and R. Killorn. 2003. Take a good soil sample to help make good decisions. Publ. Pm-287 (Rev.). Iowa State Univ. Extension.

Sawyer, J.E., A.P. Mallarino, and J. Lundvall. 2003. Crop and soil response to liquid swine manure phosphorus application. In Odor and Nutrient Management Newsletter. Crop and soil response to liquid swine manure application. EDC-129-19, Vol. 6, Issue 1. Iowa State Univ. Extension. Ames, IA.

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. (download pdf-file)

Lorimor, J., Mallarino, A.P., J.E. Sawyer, and J. Creswell. 2002. Manure resources. Nutrient Management Information Sheet No. 3. Iowa State Univ. Extension.

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. (download pdf-file)

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 Conf. Proceedings. Vol. 17. Des Moines, IA. (download pdf-file)

Mallarino, A.P., J.E. Sawyer, and J. Creswell. 2002. Phosphorus application. Nutrient Management Information Sheet No. 2. Iowa State Univ. Extension.

Mallarino, A.P., J.E. Sawyer, and J. Creswell. 2002. Soil testing. Nutrient Management Information Sheet No. 1. Iowa State Univ. Extension.

Mallarino, A.P., J.E. Sawyer, B. Stewart, and J. Creswell. 2002. Nutrient management plan. Nutrient Management Information Sheet No. 8. Iowa State Univ. Extension.

Sawyer, J.E., and A.P. Mallarino. 2002. Corn leaf potassium deficiency symptoms. In The Integrated Crop Management Newsletter. IC-488(15). Iowa State Univ. Extension.

Sawyer, J.E., A.P. Mallarino, R. Killorn, and S.K. Barnhart. 2002. General guide for crop nutrient recommendations in Iowa. Publ. Pm-1688 (Rev.). Iowa State Univ. Extension.

Creswell, J., A.P. Mallarino, G. Miller, J.E. Sawyer, and M. Tidman. 2001. Phosphorus - Why the concern about water quality? In The Integrated Crop Management Newsletter. IC-486(21). Iowa State Univ. Extension.

Fenton, T., A.P. Mallarino, J.E. Sawyer, J. Creswell, and M. Tidman. 2001. Soil resources of phosphorus. In The Integrated Crop Management Newsletter. IC-486(2). Iowa State Univ. Extension.

Mallarino, A.P. 2001. Phosphorus management for the corn-soybean rotation. p. 20-21. In Iowa Soybean Review. Summer 2001. Iowa Soybean Association, Urbandale, IA.

Mallarino, A.P., R. Borges*, and D. Wittry*. 2001. Corn and soybean response to potassium fertilization and placement. p. 5-11. In North-Central Extension-Industry Soil Fertility Conf. Proceedings. Vol. 16. Des Moines, IA. (download pdf-file)

Mallarino, A.P., B.M. Stewart, J.L. Baker, J.A. Downing, and J.E. Sawyer. 2001. Background and basic concepts of the Iowa phosphorus index. A support document to the NRCS Field Office Tech. Note 25. p. 63-71. In Agriculture and the Environment Conf.: State and Federal Water Initiatives. Proceedings. March 5-7, 2001. Iowa State Univ. Ames, IA. (download pdf file)

Mallarino, A.P., and D. Wittry*. 2001. Management zones soil sampling: A better alternative to grid and soil type sampling? p. 159-164. In The Integrated Crop Management Conf. Proceedings. Dec. 5-6, 2001, Ames, IA. Iowa State Univ. Extension. (download pdf-file)

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. (download pdf-file)

Downing, J., A.P. Mallarino, J.E. Sawyer, J. Creswell, and M. Tidman. 2000. Phosphorus in aquatic systems. In The Integrated Crop Management Newsletter. IC-484 (25). Iowa State Univ. Extension.

Mallarino, A.P. 2000. Corn and soybean responses to deep-band phosphorus and potassium. In The Integrated Crop Management Newsletter. IC-484 (22). Iowa State Univ. Extension.

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. (download pdf-file)

Mallarino, A.P., J.E. Sawyer, J. Creswell, M. Tidman. 2000. Management of phosphorus for crop production. In The Integrated Crop Management Newsletter. IC-484 (23). Iowa State Univ. Extension.

Mallarino, A.P., J.E. Sawyer, J. Creswell, and M. Tidman. 2000. Soil testing and available phosphorus. In The Integrated Crop Management Newsletter. IC-484 (22). Iowa State Univ. Extension.

Sawyer, J.E., and A.P. Mallarino. 2000. Why manage phosphorus? In The Integrated Crop Management Newsletter. IC-484 (6). Iowa State Univ. Extension.

Mallarino, A.P. 1999. Alternative phosphorus and potassium management practices for corn and soybean. In The Eastern Iowa Integrated Crop Management Conf. Cedar Rapids, IA. Iowa State Univ. Extension.

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 Conf. Proceedings. Dec. 1-2, 1999. Ames, IA. Iowa State Univ. Extension. (download pdf-file)

Mallarino, A.P. 1999. Effective use of precision agriculture for improved management of phosphorus, potassium, and lime. p. 12-13. In The Integrated Crop Management Newsletter. IC-482(PrecisAg). Iowa State Univ. Extension.

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. (download pdf-file)

Mallarino, A.P. and J.E. Sawyer. 1999. Interpreting Mehlich-3 soil test results. Publ. SP-126. Iowa State Univ. Extension.

Mallarino, A.P. and J.E. Sawyer. 1999. Interpreting Mehlich-3 soil test results. p. 11-13. In The Integrated Crop Management Newsletter. IC-482(2). Iowa State Univ. Extension.

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 Conf. Proceedings. Vol. 15. St. Louis, MO. (download pdf-file)

Sawyer, J.E., and A.P. Mallarino. 1999. Interpreting P and K soil test results. In The Integrated Crop Management Newsletter. IC-482(1). Iowa State Univ. Extension.

Voss, R.D., J.E. Sawyer, A.P. Mallarino, and R. Killorn. 1999. General guide for crop nutrient recommendations in Iowa. Publ. Pm-1688 (Rev.). Iowa State Univ. Extension.

Hansen, D.J., A.M. Blackmer, and A.P. Mallarino. 1998. Optimizing nitrogen management in manured cornfields. p.121-126. In North-Central Extension-Industry Soil Fertility Conf. Proceedings. Vol. 14. St. Louis, MO.

Mallarino, A.P. 1998. New Iowa State University phosphorus fertilizer recommendations impacts on profitability and water quality. p. 5-7. In Watershed Partnerships Conference. Proceedings. January 20-21. Ames, IA. Iowa State Univ. Extension.

Mallarino, A.P. 1998. Using precision agriculture to improve soil fertility management and on-farm research. p. 12-14. In Integrated Crop Management Newsletter. IC-480(Precision Ag Edition). Iowa State Univ. Extension.

Mallarino, A.P. 1998. What is new in phosphorus and potassium management for soybeans and its impact on water quality. In Proceedings. Midwest Soybean Conf. August 7-9, 1998. Davenport, IA.

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 A. Atia*. 1998. Manure phosphorus in soils: how should we approach upper limits? p. 23-30. In 18th. Annual Crop-Pest Management Short Course (CPM). Proceedings. Nov. 23-24, 1998. Univ. of Minnesota. St. Paul, MN.

Mallarino, A.P., and Haq*, M.U. 1998. Foliar fertilization of soybeans. p. 20-26. In North-Central Extension-Industry Soil Fertility Conf. Proceedings. Vol. 14. St. Louis, MO. (download pdf-file)

Mallarino, A.P., and D. Wittry*. 1998. Soil sampling strategies for variable rate P and K fertilization and liming. p. 251-256. In The Integrated Crop Management Conf. Proceedings. Nov. 17-18, 1998. Ames, IA. Iowa State Univ. Extension.

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 Conf. Proceedings. Nov. 17-18, 1998. Ames, IA. Iowa State Univ. Extension. (download pdf-file)

Blackmer, A.M., R.D. Voss, and A.P. Mallarino. 1997. Nitrogen fertilizer recommendations for corn in Iowa. Publ. Pm-1714. Iowa State Univ. Extension.

Mallarino, A.P. 1997. Improving soil fertility management. p.8-9. In Integrated Crop Management Newsletter. IC-478PAg. Iowa State Univ. Extension.

Mallarino, A.P., and R. Borges*. 1997. Deep banding phosphorus and potassium for no-till corn and soybeans. p.129-135. In North-Central Extension-Industry Soil Fertility Conf. Proceedings. Vol. 13. St. Louis, MO.

Mallarino, A.P., and D. Wittry*. 1997. Use of DGPS, yield monitors, soil testing, and variable rate technology to improve phosphorus and potassium management. p. 267-275. In The Integrated Crop Management Conf. Proceedings. Nov. 17-18, 1997. Ames, IA. Iowa State Univ. Extension.

Blackmer, A.M., and A.P. Mallarino. 1996. Cornstalk testing to evaluate nitrogen management. Publ. Pm-1584 (Rev.). Iowa State Univ. Extension.

Mallarino, A.P. 1996. Phosphorus and potassium fertilization of corn and soybean. Section 8. In Proceedings. Midwest Soybean Conference. August 9-12, 1996. Des Moines, IA.

Mallarino, A.P., J.M. Bordoli*, and R. Borges*. 1996. Phosphorus and potassium placement for no-till corn. p. 133-136. In The Integrated Crop Management Conf. Proceedings. Nov. 19-20. Ames, IA. Iowa State Univ. Extension.

Voss, R., and A.P. Mallarino. 1996. Changes in Iowa's soil test P and K interpretations and recommendations. p. 82-93. In P. Scharf (ed.), North-Central Extension-Industry Soil Fertility Conf. Proceedings. Vol. 12. St. Louis, MO.

Voss, R.D., A.P. Mallarino, and R. Killorn. 1996. General guide for crop nutrient recommendations in Iowa. Publ. Pm-1688. Iowa State Univ. Extension.

Mallarino, A.P., and D.J. Dunn. 1995. Soil test interpretations for Iowa high pH soils. p. 175-180. In The Integrated Crop Management Conf. Proceedings. 29-30 Nov. Ames, IA. Iowa State Univ. Extension.

Mallarino, A.P. 1994. Spatial variability of phosphorus and potassium in no-till corn and soybean fields. p. 115-121. In The integrated crop management conf. Proceedings. Nov. 30-Dec.1, 1994. Ames, IA. Iowa State Univ. Extension.

Blackmer, A.M., and A.P. Mallarino. 1994. Cornstalk testing to evaluate nitrogen management. Publ. Pm-1584. Iowa State Univ. Extension.

Blackmer, A.M., T.F. Morris, B.G. Meese, and A.P. Mallarino. 1993. Soil testing to optimize nitrogen management for corn. Publ. Pm-1521. Iowa State Univ. Extension.