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While baseball players are picking up bats and taking practice swings, all across North America there are farmers, crop advisers, fertilizer dealers, and others equally intent with pencils and calculators. There are tough decisions to be made soon for the 2009 crop season. There has been plenty of talk about price dictating 2009 cropping plans. Many crop producers have been holding off on decisions hoping for better prices; some are considering cutting back on phosphate or potash or both. There is no single answer that fits all circumstances, but it is important to remember that fertilizer is an investment that offers longer term benefits.

IPNI scientific staff have prepared a series of articles that may be helpful in dealing with the dilemma of fertilizer decisions this year. Here are titles of the topics posted here as PDF files. They are:
  • Chances of Losing Yield from Fertilizer Rate Reductions
  • Don't Make a Fertilizer Decision this Spring without a Soil Test
  • Optimum Nitrogen and Phosphorus Rates in Times of Changing Grain and Fertilizer Markets
  • There Is No Substitute for Adequate Crop Nutrition
  • Crop Nutrient Economics: Price Ratios

In addition, decision aids to help farmers and advisers make informed decisions are available in the Toolbox section of IPNI's website: www.ipni.net/toolbox

 Chances of Losing Yield from Fertilizer Rate Reductions

Fert09EconSer_F Feb 23.pdf



 Don't Make a Fertilizer Decision this Spring without a Soil Test

Fert09SoilTest_F Feb 23.pdf



 Optimum Nitrogen and Phosphorus Rates in Times of Changing Grain and Fertilizer Markets

Fert09OptimumNitrogen_F Feb 23.pdf



 There Is No Substitute for Adequate Crop Nutrition

Fert09NoSubstitute_F Feb 23.pdf



 Crop Nutrient Economics: Price Ratios

Fert09PriceRatios_F Feb 23.pdf





Additional Resources

Click Here for More Information on Fertilizer Economics

IPNI Toolbox: Software tools for decision making.

Fertilizer BMPs: Best Management Practices for corn, potatoes, cotton, turf, and more.


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