Start Date

3-12-1992 12:00 AM

Description

Iowa crop producers purchase and apply 7.6% of all the nitrogen (N) fertilizer used in the United States to support production of com, small grains, and pasture on nearly twenty million acres annually (Hargett and Berry, 1990). The annual cost of the nitrogen fertilizer (1.5 million tons in 1990) exceeds $300 million.

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Dec 3rd, 12:00 AM

Effect of N Rate and Time of Application on Corn Grain Yield and N Recovery

Iowa crop producers purchase and apply 7.6% of all the nitrogen (N) fertilizer used in the United States to support production of com, small grains, and pasture on nearly twenty million acres annually (Hargett and Berry, 1990). The annual cost of the nitrogen fertilizer (1.5 million tons in 1990) exceeds $300 million.