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प्रश्न
What are macro-nutrients and why are they called macronutrients?
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उत्तर
Nutrients are supplied to plants by air, water and soil. There are several nutrients that are essential for plants. Air supplies carbon and oxygen, hydrogen comes from water, and soil supplies the other thirteen nutrients to plants. Amongst these, some are required in large quantities and are called macro-nutrients. The six macronutrients required by plants are nitrogen, phosphorus, potassium, calcium, magnesium, and sulphur.
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संबंधित प्रश्न
Distinguish between micronutrients and macronutrients. Give suitable examples.
Name three most important nutrients required for plant growth.
Give two limitations of using manure.
Compare the use of manures and fertilizers in maintaining soil fertility.
Explain the advantages and disadvantages of mixed cropping.
Write down disadvantages of crop rotation.
Explain various methods of weed control.
Explain various effects of weeds on crop plants.
Compare between mixed cropping and intercropping. Write down from advantage of both of these techniques.
Differentiate between the following
Mixed cropping and Intercropping
