Soil Fertility

Past Current Topics

• Apply Nitrogen or Plant Corn -- May 7, 2013
• Wet Conditions and Change in Soil Profile Nitrate -- May 6, 2013
• Don't Underestimate the Value of Starter Fertilizer for Corn Planted Late -- May 3, 2013
• Soil Profile Nitrate in Corn Fields Following the 2012 Drought -- February 21, 2013
• The Moist Soil Test for Potassium and Other Nutrients - What's It All About? -- September 27, 2012
• Soil Fertility Management Issues Following Drought Damaged Crops -- Phosphorus, Potassium, and pH -- August 22, 2012
• Soil Fertility Management Issues Following Drought Damaged Crops -- Nitrogen -- August 13, 2012
• Phosphorus and Potassium in Silage Harvest of Drought Damaged Corn -- July 27, 2012
• Care with Plant Nutrient Analysis -- June 22, 2012
• Why Are Potassium Deficiency Symptoms Showing Now in Corn and Soybeans? -- June 8, 2012
• Corn Nitrogen Rate Calculator Update -- April 23, 2012
• Soil Fertility and Nutrient Management Short Course -- February 15-16, 2012 -- January 28, 2012
• Change in Phosophorus and Potassium Contents of Cornstalks Over Time -- December 14, 2011
• Anhydrous Ammonia Application and Dry Soils -- October 28, 2011
• Flood Recovery - Flooded Soil Syndrome -- September 12, 2011
• Is Foliar Fertilization Useful to Supplement Pre-plant Fertilization? -- July 21, 2011
• Spring 2011 - Nitrogen and Sulfur Issues -- June 13, 2011
• Corn Nitrogen Rate Calculator Update -- April 12, 2011
• Fact or fiction: Anydrous ammonia application should not exceed 10 lb N per unit soil CEC -- February 22, 2011
• North Central Soil-Plant Analyst's Workshop -- January 14, 2011
• Late Nitrogen Application Demonstration - Corn Yield Update -- October 26, 2010
• Corn Stalk Nitrate Interpretation -- September 14, 2010
• Corn Nitrogen Rate Calculator Update -- August 17, 2010
• Late Nitrogen Application Demonstration -- August 16, 2010
• Energy Efficiency in Corn Nitrogen Fertilization -- July 22, 2010
• Is In-Season Fertilization for Soybean Effective? -- June 19, 2010
• Estimating Nitrogen Loss and Applying Additional Nitrogen -- June 14, 2010
• Wet Soil Conditions and Nitrogen Loss -- May 17, 2010
• Corn Injury from Anhydrous Ammonia -- April 20, 2010
• Glyphosate-Manganese Interactions in Roundup Ready Soybean -- March 11, 2010
• Runoff Phosphorus Loss Shortly After Applying Fertilizer and Animal Manure without Incorporation Into the Soil -- November 25, 2009
• Getting Ready for Fall Fertilization -- August 23, 2009
• Foliar Fertilization of Corn and Soybean -- June 30, 2009
• Soil Nitrate Sampling - Banded Nitrogen -- June 15, 2009
• Corn Seedling Injury from Ammonia -- May 22, 2009
• Effects of Crop Rotation and Nitrogen Fertilization for Corn on Yields of Corn, Silage Corn, Soybean, and Oats -- April 20, 2009
• Corn Nitrogen Rate Calculator Update -- March 27, 2009
• Yellow Corn, Wet Soils, and N Loss - Part 4 -- February 6, 2009
• Liquid Swine Manure Nitrogen Availability -- February 1, 2009
• What Are Average Manure Nutrient Analysis Values? -- January 26, 2009
• Using Layer Manure for Crop Production -- November 5, 2008
• New Manure Crop Nutrient Use Publication -- October 13, 2008
• Escalating Fertilizer Prices and High Production Costs Make Tough Fertilization Decisions -- September 22, 2008
• Corn Nitrogen Rate Calculator Updated -- July 21, 2008
• Yellow Corn, Wet Soils, and N Loss - Part 3 -- July 8, 2008
• What About Foliar Fertilization for Soybean This Year? -- July 5, 2008
• Yellow Corn, Wet Soils, and N Loss - Part 2 -- June 27, 2008
• Yellow Corn, Wet Soils, and N Loss -- June 20, 2008
• Measuring the Nitrogen Status (Part 3) -- June 13, 2008
• Estimating Nitrogen Losses (Part 2) -- June 11, 2008
• Nitrogen Loss - How Does It Happen (Part 1) -- June 10, 2008
• Importance of Nitrogen in Soils -- May 27, 2008
• Surface Waters: Ammonium is Not Ammonia - Part Three -- May 21, 2008
• It's a Late Spring: Should You Apply Nitrogen or Plant Corn? -- May 5, 2008
• Surface Waters: Ammonium is Not Ammonia - Part Two -- April 29, 2008
• Surface Waters: Ammonium is Not Ammonia -- April 21, 2008
• You Couldn't Apply Phosphorus and Potassium Last Fall and Now It's Too Wet? -- April 14, 2008
• What is Meant by Crop Availability of Manure Nutrients? -- April 9, 2008
• Is Manure the Same as Fertilizer as a Crop Nutrient Resource? -- April 3, 2008
• Don't Double Dip Soybean -- March 25, 2008
• New Online Source in Iowa for Crop Production News -- March 20, 2008
• Nitrogen Fertilization for Corn Following Corn -- March 19, 2008
• Welcome -- March 10, 2008