Question
Nutrient index approach of soil fertility evaluation was
proposed bySolution
Nutrient index approach was given by Parker to evaluate soil fertility of an area and is given by the formula NI= No .of Samples (Low) X 1 + No of Samples (Medium) X 2 + No. of Samples (High) X 3 Total Number of Samples NI< 1.67 (low) NI= 1.67-2.33 (Medium) NI>2.33 (High)
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