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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.
संबंधित प्रश्न
Choose plant’s micronutrients and macronutrients from the following Iron, Chlorine, Sulphur, Copper, Nitrogen, Calcium, Manganese, Potassium, Zinc, Magnesium, Molybdenum, Phosphorus.
Distinguish between farmyard manure and compost manure.
Explain, how efficiency of irrigation can be increased.
Distinguish between mixed cropping and intercropping.
Write down disadvantages of crop rotation.
Explain various steps in hybridization of crop plants.
Mention three different ways in which insect pests can attack the crop plant.
Give two examples of narrow leaved rabi season weed.
Define irrigation.
Compare between mixed cropping and intercropping.
