Soil Fertility Iowa State University
Extension Publications (pdf)
Flooded Soil Syndrome, Flood Recovery for Cropland
Applying Fertilizer and Lime to CRP Land
PM 1688 A General Guide for Crop Nutrient and Limestone Recommendations in Iowa
PM 1310 Interpretation of Soil Test Results
PM 1714 Nitrogen Fertilizer Recommendations for Corn in Iowa
Dry fall leads to field fires
Estimating losses when cornstalk fields are accidently burnt
Changes in retail fertilizer market impact producers
Nutrient removal when harvesting corn stover
Carbon and nitrogen cycling with corn biomass harvest
High prices and tight supply make tough fertilization decisions
Crop rotation considerations for 2004 management season
Drought impacts on soil fertility management
Watershed-scale phosphorus management
Improving soil fertility management
Conference Proceedings and Reports
Mallarino, A.P., and M.U. Haq. 2015.
Phosphorus loss with runoff after applying fertilizer or manure as affected by the timing of rainfall
. p. 94-99. In 45th North-Central Extension-Industry Soil Fertility Conf. Proceedings. Nov. 19-20 2014. Vol. 31. Des Moines, IA. International Plant Nutrition Institute, Brookings, SD. (pdf)
Mallarino, A.P. 2014.
Using precision agriculture technologies for phosphorus, potassium, and lime management with lower grain prices and to improve water quality
. p. 137-143. In The Integrated Crop Management Conf. Proceedings. Dec. 3-4, 2014. Iowa State Univ. Extension. (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. 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)
Sawyer, J.E. 2004.
With high fertilizer prices is it business as usual or should fertilization practices change?
Proc. 16th Annual Integrated Crop Manag. Conf., Ames , IA. 1-2 Dec. 2004. Iowa State Univ., Ames , IA.
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)
Nutrient Management in Crop Production
ISU Stover Harvest Information
Iowa Nutrient Reduction Strategy
Iowa NRCS Nutrient Management Planning Tools
Iowa NRCS Conservation Practice Standard 590 - Nutrient Management
Iowa NRCS Phosphorus Index
Iowa Department of Natural Resources, Animal Feeding Operations
Iowa Soil and Land Use Information