Nonconventional additives and byproducts

Extension Publications

• CROP 3074 On-Farm Study Researches Novozymes Fermentation Spent Residuals
• NCERA-103/SF2080 Performance of Commercial Asymbiotic N-Fixing Products
• NCR-533 Soil Cation Ratios for Crop Production
• NCR-347 Crop Responses to AmiSorb in the North Central Region
• NCR-343 Impact of "ACA" on Crop Yield in the North Central Region
• SF-1581 Nitrogen Extenders and Additives
• SF-1321 Effectiveness of Gypsum in the North-Central Region of the U.S.
• SF-1978 Effectiveness of using low rates of plant nutrients

Presentations

• View presentations 2015 and earlier -- click here to expand

  • Gypsum. 2004. J.Sawyer. Crop Advantage Series, Iowa State Univ.

Newsletter Articles

• View newsletter articles 2015 and earlier -- click here to expand

  • Nonconventional soil additives and programs (9/2008)
  • Soil calcium: magnesium ratios (4/2003)
  • Gypsum: an old product with a new use? (4/2003)

Conference Proceedings and Reports

• Mallarino, A.P, M.U. Haq, and L.B. Thompson. 2023. Reducing dissolved and total phosphorus loss with surface runoff by using gypsum as a soil amendment. Final Project Report to Calcium Products Inc. and The Leopold Center for Sustainable Agriculture.
• Mallarino, A.P., and M.U. Haq. 2021. High gypsum application rates impacts on Iowa soil properties, dissolved phosphorus loss, and crop yield. p.75-82. In 51st Annual North-Central Extension-Industry Soil Fertility Conf. Proceedings. 18-19 November 2021. Des Moines, Iowa.
• Mallarino, A.P., M.U. Haq, and M. Al-Kaisi. 2020. High gypsum application rates impacts on soil cation balance, water soluble phosphorus, soil physical properties, and crop yield. Final project report to the Iowa Department of Agriculture and Land Stewardship and Calcium Products Inc.

  View conference proceedings and reports 2015 and earlier -- click here to expand

  • Thompson, L.B., A.P. Mallarino, and K.T. Pecinovsky. 2013. Crop response to phosphorus fertilizer or phosphorus recovered as struvite from corn fiber processing for bioenergy. Northeast Research and Demonstration Farm Annual Reports. ISRF12-13. Iowa State Univ., Ames, IA.
  • Mallarino, A.P., and M.U. Haq. 2012. Alum and gypsum treated poultry manure and fertilizer phosphorus losses with runoff with or without incorporation into the soil. Final project report to the Iowa Egg Council.
  • Rehm, G. 2003. Is there a role for gypsum in Midwest agriculture? p. 99-103. In Proc. Thirty Third North Central Extension-Industry Soil Fertility Conf., Des Moines, IA. 19-20 Nov. 2003. Potash and Phosphate Inst., Brookings, SD

Featured Publication

Links

• NCERA-103 Searchable Compendium of Non-Traditional Materials
• ISU Research and Demonstration Farms Annual Progress Reports
• Iowa Department of Agriculture and Land Stewardship, Feed & Fertilizer Bureau, Laws and Rules

Quick Links

Corn Nitrogen Rate Calculator

ISU Extension and Outreach Store

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ISU Integrated Crop Management Blog

North Central Extension-Industry Soil Fertility Conference