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Illinois Fertilizer Conference Proceedings
January 23-24, 1990

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Table 5. Nitrogen fertilizers used in Illinois in 1964 and 1988
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  % of total N added
Material 1964 1988
Anhydrous ammonia 41.9 54.4
Aqua ammonia 8.1 0.1
N solution 9.9 21.3
Ammonium nitrate 11.4 1.2
Urea 1.6 8.6
Ammonium sulfate 3.5 0.2
Diammonium phosphate 1.3 11.1
Others 22.3 3.1

 

 

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