Question

Why are chemical fetilizers used in new farming methods?How could use of fertilizers make soil less fertile?What are the alternative ways of enriching soil?

Answer 1

Answer:

Farmers turn to fertilizers because these substances contain plant nutrients such as nitrogen, phosphorus, and potassium. Fertilizers are simply plant nutrients applied to agricultural fields to supplement required elements found naturally in the soil. Fertilizers have been used since the start of agriculture.

HOW THEY MAKES SOIL LESS FERTILE:

Of all the major fertilizer nutrients, nitrogen is the main nutrient affecting soil pH, and soils can become more acidic or more alkaline depending on the type of nitrogen fertilizer used. ... Phosphoric acid is the most acidifying phosphorus fertilizer. - Potassium fertilizers have little or no effect on soil pH.

ALTERNATIVE WAYS TO ENRICHMENT OF SOIL ARE:

By using manure,natural fertilizers, organic compound etc.

Answer 2

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1. chemical fertilizers provide minerals (nitrogen, phosphorus and potassium )which dissolve in water and are immediately available to plants.

2. but may not be retained in the soil for long.

3. they may be leached from the soil and pollute ground water, rivers and lakes.