Soil Fertility

Nitrogen

Decision Tools

• N Rate Calculator

Fact Sheets

• Best Management Practices for Nitrogen Use in Minnesota
• Best Management Practices for Nitrogen Use in Northwestern Minnesota
• Best Management Practices for Nitrogen Use in South-Central Minnesota
• Best Management Practices for Nitrogen Use in Southeastern Minnesota
• Best Management Practices for Nitrogen Use in Southwestern and West-Central Minnesota
• Best Management Practices for Nitrogen on Coarse Textured Soils
• Soil N Test for N Recommendations in Corn
• Using the Soil Nitrate Test in Minnesota
• Providing Proper N Credit for Legumes
• Understanding Nitrogen in Soils
• Validating Nitrogen Rates for Corn on Farm Fields in Southern Minnesota
• Supplemental Nitrogen Worksheet for Corn (1 MB PDF)
• Fertilizer Urea
• Using Anhydrous Ammonia Safely on the Farm

Crop News Articles

• Nitrogen and Sulfur Sources for Side-Dress Application (June, 2011)
• Supplemental N for Corn? (May, 2011)
• Non-Harvested Soybean: Can You
  Expect an Extra N Credit? (October, 2010)
• Fall Application of Urea: A Risky Practice? (October, 2010)
• On-Farm Validation of Alfalfa N Credits to Corn (February, 2010)
• Nitrogen Management for 2008 Corn (September, 2008)
• Nitrogen Efficiency in Corn Production: it's Better Than it Used to Be (September, 2006)
• The Basal Stalk Nitrate Test for Corn (August, 2005)
• Nitrogen Status of Corn Fields (June, 2005)
• Nitrogen Credit Contribution by Alfalfa to Corn (January, 2005)
• The Value of Free Advice: N Recs after the Rains last Spring (November, 2004)
• Fall Soil Sampling for Nitrate-N (September, 2003)
• In Season Nitrogen for Corn (January, 2003)
• Anhydrous Ammonia This Fall? (October, 2002)
• Soil Nitrate: Fall 2002 (October, 2002)
• Considerations for Fall Nitrogen - 2002 (September, 2002)
• Nitrogen Loss: Same Song, Second Verse (July, 2002)
• Was Fall Nitrogen Lost? (July, 2002)
• Optimum Nitrogen Rates for Corn after Soybeans Using Farmer's Fields in Southern Minnesota (May, 2002)
• Corn Yields - Potsdam N Validation Trial (January, 2002)

On-farm Research Results from Northwest and West Central Minnesota

• Corn Nitrogen Rate Fertility Trials in NW and WC Minnesota (2009)
• Corn Nitrogen Rate Fertility Trials in NW and WC Minnesota (2008)
• Corn Nitrogen Rate Fertility Trials in NW Minnesota (2007)

Research Results from Southern Minnesota

• Recent Publications and Abstracts