Class 8 Science: Crop Production and Management
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Questions and Answers

What is the main difference between Rabi and Kharif crops in India?

  • Rabi crops require less water than Kharif crops.
  • Rabi crops are genetically modified, while Kharif crops are not.
  • Rabi crops are grown during the winter season, while Kharif crops are grown during the monsoon season. (correct)
  • Kharif crops are sown during the winter season.

    • Which of the following is a correct step in soil preparation for crop production?

  • Spraying synthetic growth hormones on the soil
  • Adding excessive water to compact the soil
  • Using chemical pesticides to sterilize the soil
  • Turning and loosening the soil by ploughing (correct)

    • How do new crop varieties impact the use of chemical fertilizers?

  • New crop varieties require smaller amounts of chemical fertilizers
  • New crop varieties increase the need for organic manure only
  • New crop varieties eliminate the need for any fertilizers
  • New crop varieties lead to a significant rise in the use of chemical fertilizers (correct)

    • Which nutrient is commonly found in chemical fertilizers and is essential for plant growth?

    <p>Phosphorus</p> Signup and view all the answers

    What is the primary purpose of manure in agriculture?

    <p>To provide essential nutrients to the soil for plant growth</p> Signup and view all the answers

    Which of the following is a traditional irrigation method according to the text?

    <p>Chain Pump</p> Signup and view all the answers

    Why are food grains usually harvested with more moisture than required for storage?

    <p>To prevent insects and rodents from damaging the grains</p> Signup and view all the answers

    What is animal husbandry primarily concerned with?

    <p>Breeding animals for providing food</p> Signup and view all the answers

    Study Notes

    Crop Production in India

    • Rabi crops are sown during the winter season, whereas Kharif crops are sown during the monsoon season.

    Soil Preparation

    • Tillage is a correct step in soil preparation for crop production.

    Crop Varieties and Fertilizers

    • New crop varieties can reduce the use of chemical fertilizers due to their improved nutrient uptake efficiency.

    Nutrients in Fertilizers

    • Nitrogen is a common nutrient found in chemical fertilizers and is essential for plant growth.

    Manure in Agriculture

    • The primary purpose of manure in agriculture is to act as a natural fertilizer, improving soil fertility and structure.

    Irrigation Methods

    • Basin irrigation is a traditional irrigation method.

    Grain Harvesting and Storage

    • Food grains are usually harvested with more moisture than required for storage to prevent moisture loss during transportation and storage.

    Animal Husbandry

    • Animal husbandry is primarily concerned with the care and breeding of livestock.

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    Description

    Learn about the importance of crop production, proper management, and distribution of food in feeding a large population. Explore the types of crops grown in India based on seasons and how the selection of seeds affects yield.

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