On-Farm Research
Step-by-step instructions for simple statistical analysis in Microsoft Excel
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Finding Trends in Soil Test Data
This tutorial provides step-by-step instructions for using Microsoft Excel to visualize changes in variability and average soil test levels
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Nutrient Costs in Corn Production: 2010 Update
1975 - 2010
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Fertilizer Statistics
Data from 1955 to 2009
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How To Compare One pH Level to Another
A lookup table plus information on how the table was generated
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Average Nutrient Removal Rates for Crops in the Northcentral Region
Nutrient removal rates for various crops
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PKalc - Nutrient Budget Estimation Spreadsheet
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Rate Reduction Calculator v2.0
A Microsoft Excel 2007 spreadsheet that estimates yield losses from nutrient rate reductions
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Dry Matter Content Often Used when Reporting Crop Yields
A table showing moisture contents and test weights of crops
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Crop Production Statistics
Crop production statistics to 2008
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Comparative Nutrient Use Efficiency by Candidate Biofuel Crops
2008 - present
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Comparison of Ammonium Sulfate Nitrate and Ammonium Sulfate to Other Turf Nitrogen Fertilizer Sources
2010 - present
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Evaluation of Ammonium Sulfate Nitrate as a Nitrogen Source for Potato and Sweet Corn on Sandy Soils
2010 - present
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Variability in Soil Test Potassium and Crop Yield
1999 - present
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Evaluation of Corn Response to Sulfur Fertilization in Iowa
2007-2009
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Evaluation of Mosaic MicroEssentials Sulfur Fertilizer Products for Corn Production
2009 - present
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The Science behind the Nitrogen Credit
20 Jan. 2012
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Nitrogen Plays Well with Others
30 Aug 2011
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Managing Crop Nutrients for Weather Extremes
16 Aug. 2011
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Floods and Fungi and Phosphorus - Oh My!
1 Jun 2011
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How Does One pH Compare to Another?
3 Mar. 2011
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Starter Fertilizer - Why It's Done
Winter 2010
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Not All Fertilizer Bands Play the Same Song
Fall 2010
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A Treatment for My Grains
Summer 2010
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A Distant Early Warning Line for Potassium
Spring 2010
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What can I expect when skipping a phosphorus or potassium application?
21 November 2009
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