Field Variability of Anhydrous Ammonia Distribution
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The Iowa State University Integrated Crop Management Conference is Iowa's premier crop production education event. No other program in Iowa brings together the diverse range of topics, slate of expert presenters and results of the latest University research.
The ICM Conference offers workshops focusing on the latest in crop production technology. Experts from Iowa and surrounding states will provide research updates and results in soil fertility, soil and water management, crop production and pest management.
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Abstract
Nitrogen fertilizer is a major input into production costs of corn, cotton, wheat and other crops. Anhydrous ammonia is the most popular form of nitrogen application. In the United States 4.9 million tons of anhydrous ammonia were applied in both 1996 and 1997 (Terry and Kirby, 1997). Comparing fertilizer usage by source, anhydrous ammonia supplied 4.0 million pounds of nitrogen to U.S. crops while the next most popular source, nitrogen solutions, supplied just 3. 0 million pounds of nitrogen.