Question

Explain impacts of fertilizers used in agriculture

Answer 1

Answer:

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Explanation:

Nutrients from manure and fertilizers enter lakes and streams through runoff and soil erosion. Generally, when soil-test nitrogen (N) and phosphorus (P) increase, greater amounts of plant-available N and P move with water.

Answer 2

Impacts of fertilizers used in agriculture are-

Positive impacts-

• The use of fertilizers in the soil increases its fertility by adding nutrients to it.
• The use of fertilizers in agriculture increases crop yield.
• Fertilizers protect the crops from pests and soil-borne pathogens.

Negative impacts-

• Excessive use of fertilisers decreases the fertility of the soil and hardens it.
• The fertilizers contain nutrients such as nitrogen and phosphorus that enters the water bodies through agricultural runoff and causes eutrophication.
• It causes soil, water and air pollution by adding harmful chemicals into the environment.