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प्रश्न
What are fertilizers ? Classify fertilizers.
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उत्तर
Fertilisers are organic or inorganic materials that are mixed in the soil to provide plant nutrients essential to the growth of plants. Fertilisers supply nitrogen, phosphorous, and potassium (NPK).
Fertilisers are classified into four groups:
1. Nitrogenous fertilisers: They contain nitrogen as the major nutrient.
2. Phosphatic fertilisers: They contain phosphate or phosphorus as the major nutrient.
3. Potassic fertilisers: They contain potassium as the major nutrient.
4. Complex fertilisers: They contain a combination of multiple nutrients.
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संबंधित प्रश्न
How do plants get nutrients?
Distinguish between micronutrients and macronutrients. Give suitable examples.
How plants get nutrients ?
Choose plant’s micronutrients and macronutrients from the following Iron, Chlorine, Sulphur, Copper, Nitrogen, Calcium, Manganese, Potassium, Zinc, Magnesium, Molybdenum, Phosphorus.
Explain advantages of irrigation.
Distinguish between mixed cropping and intercropping.
Write down disadvantages of crop rotation.
Describe the biological method of weed control.
Distinguish between fertilizer and manure. Give suitable examples. What are advantages and disadvantages of using fertilizer?
If there is low rainfall in a village throughout the year, what measures will you suggest to the farmers for better cropping?
