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Illinois Fertilizer Conference Proceedings
January 23-25, 1995

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Table 2: Precision of NO3-N analyses with the Cardy Card Nitrate Meterspacer

Soil NO3-N Determined
Range Mean Std. Deviation
---------- ppm ----------
#4 31 - 33 32.1 0.54
#10 23 - 24 23.4 0.49

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