Question:
A farmer adds/ supplies Na, Ca, Mg and Fe regularly to his field and yet he observes that the plants show a deficiency of Ca, Mg and Fe. Give a valid reason and suggest a way to help the farmer improve the growth of plants.
Solution:
The soil becomes infertile when the pH is not maintained. Alkalinity or acidity of the plants when increased they won’t take up nutrients from the soil. It causes iron deficiency also.
Prevention:
The pH of the soil is maintained and using good quality fertilizers.