Soil Fertility Iowa State University

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Soil/Plant Sampling and Testing

Extension Publications

Newsletter Articles

Tissue testing for field crops requires cautious use and interpretation (6/2019)

Conference Proceedings and Reports

Mallarino, A.P. 2016. Value of tissue testing to improve phosphorus, potassium, and micronutrients management for corn and soybean. p. 139-146. In The Integrated Crop Management Conf. Proceedings. Nov. 30-Dec. 1, 2016. Iowa State Univ. Extension.
Mallarino, A.P. 2016. What can long term experiments provide for improving phosphorus and potassium management? p. 12-16. In 65th North-Central Extension-Industry Soil Fertility Conf. Proceedings. Nov. 2-3 2016. Vol. 32. Des Moines, IA. International Plant Nutrition Institute, Brookings, SD.
Mallarino, A.P., and R.R. Oltmans. 2014. Potassium management, soil testing and crop response. p. 45-52. In 44th North-Central Extension-Industry Soil Fertility Conf. Proceedings. Nov. 19-20 2014. Vol. 30. Des Moines, IA. International Plant Nutrition Institute, Brookings, SD.
Mallarino, A.P., and J.E. Sawyer. 2013. Update to Iowa phosphorus, potassium, and lime recommendations. p. 137-143. In The Integrated Crop Management Conf. Proceedings. Dec. 4-5, 2013. Iowa State Univ. Extension.
Mallarino, A.P. 2013. Re-implementation of moist soil testing to improve the assessment of crop-available potassium in Iowa soils. In Proceedings, NCERA-13 Committee (eds.) North Central Region Soil and Plant Analyst Workshop. Feb. 26-27, 2013. Iowa City, IA.
Mallarino, A.P. 2012. Testing field-moist soil samples improves the assessment of potassium needs by crops. p. 137-144. In The Integrated Crop Management Conf. Proceedings. Nov. 28-29, 2012. Iowa State Univ. Extension.
Mallarino, A.P., B.E. Hill, and K.L. Culp. 2011. Iowa Soil Test Summaries 2006-2010. Iowa State Univ., Dep. of Agronomy, Ames, IA
Mallarino, A.P., M.W. Clover, and R.R. Oltmans. 2011. Identification of Reasons for High Temporal Soil-Test Potassium Variation. p. 65-73. In North-Central Extension-Industry Soil Fertility Conf. Proceedings. Vol. 27. Des Moines, IA
Mallarino, A.P, and T.S. Murrell. 2004. Detecting phosphorus with plasma emission spectroscopy may require unique field calibration data. Better Crops Plant Food 88(2):12-15.
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.
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.
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.
Mallarino, A.P., and D.J. Wittry. 2000. Identifying cost-effective soil sampling schemes for variable-rate fertilization and liming. In P.C. Robert et al. (ed.). Fifth Intl. Conf. on Site-Specific Management for Agricultural Systems. Proceedings. CD-ROM. July16-19. Bloomington, MN. ASA, CSSA, SSSA, Madison, WI.
Mallarino, A.P. 1999. Soil phosphorus testing for crop production and environmental purposes. p 185-192. In The Integrated Crop Management Conference. Proceedings. Dec. 1-2, 1999. Iowa State Univ. Extension. Ames.
Sawyer, J.E., and A.P. Mallarino. 1999. Differentiating and understanding the Mehlich 3, Bray, and Olsen soil phosphorus tests. Presented at the 19th Annual Crop Pest Management Short Course, Univ. of Minnesota, Nov. 22, 1999. St. Paul, MN.
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.
Mallarino, A.P. 1995. Comparison of Mehlich-3, Olsen, and Bray-P1 procedures for phosphorus in calcareous soils. p. 96-101. In G. Rehm (ed.) North Central extension-industry soil fertility conference. Proceedings. Vol. 11. St. Louis, MO.

Featured

Take a Good Soil Sample to Help Make Good Fertilization Decisions
Antonio Mallarino, John Sawyer

Learn more about the most important step in soil testing to make fertilization decisions for FIELD CROPS - collecting the soil sample. Includes information on materials needed, when to sample, how to select a sample area, how often to sample and much more.

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North Central Extension-Industry Soil Fertility Conference Proceedings