A farmer wants to add nutrients to soil in his agricultural field so that his plants thrive. Suggest a suitable set of plant nutrients that the farmer should add such that it does not cause any water pollution.

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Solution

$∙$ Manure is an organic substance obtained from the decomposition of plant or animal wastes.
$∙$ Vermicompost is the product of decompostion of organic wastes using worms such as earthworms.
$∙$ The use of manure and vermicompost improves the soil texture and replenishes the soil with nutrients.
$∙$ Fertilisers are chemicals that are rich in a particular nutrient and help in increasing the crop yield. However, the excessive use of fertilisers makes the soil infertile and causes water pollution.
$∙$ Urea, ammonium sulphate, NPK and potash are all examples of fertilisers.

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Choose the option that best depicts the relative amount of nutrients that need to be added to the water. (A bigger circle means more amount and vice versa; if a circle is not present, means that the nutrient is not added ).

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