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प्रश्न
Classify nutrients according to their sources.
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उत्तर
Nutrients are classified into three groups according to their sources.
| Source | Nutrients | |
| 1. | Air | Carbon (C) and oxygen (O) |
| 2. | Water | Hydrogen (H) |
| 3. | Soil | Nitogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), sulphur (S), iron (Fe), manganese (Mn), boron (B), zinc (Zn), copper (Cu), molybdenum (Mo), and chlorine (Cl) |
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संबंधित प्रश्न
Choose plant’s micronutrients and macronutrients from the following Iron, Chlorine, Sulphur, Copper, Nitrogen, Calcium, Manganese, Potassium, Zinc, Magnesium, Molybdenum, Phosphorus.
Compare the use of manures and fertilizers in maintaining soil fertility.
Write down two advantages of fertilizer over manure
How does chemical nature of the soil change due to continued use of chemical fertilizers ?
What is green manuring?
Explain the objectives of mixed cropping.
Write about three main criteria which should be considered while selecting the crops for rotation?
Mention three different ways in which insect pests can attack the crop plant.
What is the advantage of using insect resistant varieties?
Explain what will happen if in a cultivated field only manures are supplied and in another field only fertilizers are supplied, keeping all other conditions similar.
