Question

Give two examples of the following .Two tests of finding of the soil fertility.​

Answer 1

For example, a 10-10-15 fertilizer has 10 percent nitrogen, 10 percent (P2O5) available phosphorus and 15 percent (K2O) water-soluble potassium. ... Soil fertility is a complex process that involves the constant cycling of nutrients between organic and inorganic forms.The measurement of the fertility of soils is usually done by chemical analysis for plant nutrients such as nitrogen (N), potassium (K), phosphorus (P) and trace elements, as well as physical measurements of soil structure.

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