Question

how has the rationing of test kits been done at ground level​

Answer 1

Answer:

Soil testing for NPK. The most common reason for soil testing is to measure the availability of plant nutrients in the soil. Soil tests can also measure things like pH, pollutants both organic and metallic, and humus levels, but the main reason for most soil tests for gardeners is to provide information about the level of nutrients.

Explanation:

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