Question

why are manure and fertilizers used in fields?​

Answer 1

Answer:

Manures and fertilizers are used in fields to supply plant nutrients to the soil, increasing soil fertility to ensure good vegetative growth that results in high crop production. It helps in enriching the soil with nutrients, organic matter, and increasing soil fertility.

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Answer 2

Answer:

Manures and fertilizers are used in fields to supply plant nutrients to the soil,, increasing soil fertility to ensure good vegetative growth that results in high crop production. It helps in enriching the soil with nutrients, organic matter and increasing soil fertility.

Explanation:

Manures and fertilizers are required in fields to enrich the soil with the desirable nutrients.

1. Fertilizers are added in measured quantities after testing the quality of the soil in the laboratory. This eliminates excessive indiscriminate addition.
2. However, manures can be added as and when required as they are processed organic wastes and addition in excess quantities do not have an adverse effect on the soil microflora like the fertilizers.

Both manures and fertilizers replenish the soil of depleted nutrients and help increase the yeild.

• Examples of fertilizers are - NPK, Ferrous Sulphate, Lime, Ammonium Phosphate etc.
• Examples of Manures are; Farm Yard Manure, Vermicompost etc