New thinking on nitrogen rates

From Agriculture online - New approach to choosing nitrogen rates emphasizes economics

Agronomists from throughout the Corn Belt have developed a new approach for making nitrogen rate recommendations. The new approach puts more emphasis on economic returns. Choosing a nitrogen rate is one of the most difficult cropping decisions many farmers make each year. It's been particularly difficult recently as nitrogen prices soared while corn prices slumped.

Sometimes a better yield does not mean the most money. With rising petroleum prices, I'll bet you'll be seeing more of this.