1. New Minnesota Nitrogen Rate Guidelines

7. Maximum Return to Nitrogen 120-165 #/A.10 ratio corn-corn

8. Previous U of M Nitrogen Recommendations

9. N Price to Crop Value Ratio N price—fall 2007 –NH3=$530/ton or.34¢ / lb. Actual N Some reports of >$700/ton.43 ¢/lb. Actual N –Urea=$460/ton or.50¢ / lb. Actual N (spring 07) –28% =$270/ton or.48 ¢ / lb. Actual N (spring 07) Corn price per bushel –Current cash price= $3.50 per bushel –.34 ¢ / lb. Actual N divided by $3.50=.10 ratio –.50 ¢ / lb. Actual N divided by $3.50=.14 ratio

10. New v.s. Old N Rate Differences Corn following Soybeans

11. New v.s. Old N Rate Differences Corn following Corn