Question

8. Chemicals used to provide nutrients into
the soil.​

Answer 1

Explanation:

Nitrogen, phosphorous, potassium, sulfur, calcium, magnesium and sodium are also needed for plant growth.

Answer 2

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Necessity impelled the development of artificial fertilizers, which are chemical substances containing, in forms readily available to plants, the elements that improve the growth and productivity of crops. The three major nutrient elements that a crop needs are nitrogen, phosphorus, and potassium.

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