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प्रश्न
How do plants get nutrients?
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उत्तर
Plants require sixteen essential nutrients from nature for their growth and development. All these nutrients are obtained from air, water and soil. Soil is the major source of nutrients. Thirteen of these nutrients are available from soil. The remaining three nutrients (carbon, oxygen and hydrogen) are obtained from air and water.
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संबंधित प्रश्न
Why are manures and fertilizers used in fields?
Explain the term eutrophication with suitable example
Define manure. What are different manures and how do they affect the soil ?
What is green manuring ? Give suitable examples for green manures.
What are fertilizers ? Classify fertilizers.
Why is irrigation essential ?
Define irrigation. Why is irrigation of crops essential? Mention the harmful effects of excessive irrigation.
Compare between mixed cropping and intercropping. Write down from advantage of both of these techniques.
Discuss the various methods which are used to control plant diseases.
Why is organic matter important for crop production?
