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Illinois Fertilizer Conference Proceedings
January 23-24, 1990

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Table 2. Nitrogen, phosphorous, and potassium added to corn, soybeans and wheat in Illinois in 1964 and 1988.
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  Pounds per acre applied:
Crop Year Nitrogen Phosphorous Potassium
Corn 1964
64
36
32
Corn 1988
163
77
97
Soybeans 1964
1
1
3
Soybeans 1988
2
17
34
Wheat 1964
29
37
25
Wheat 1988
96
73
76

 

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