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Questions and Answers
Why is it important to properly dry freshly harvested grains before storing them?
To reduce moisture and prevent spoilage or attack by organisms
What is the purpose of using neem leaves when storing food grains at home?
To protect the grains from pests like insects and rats
How do large godowns protect stored grains from pests and microorganisms?
By employing specific chemical treatments
What is the difference between fertiliser and manure?
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Explain the process of obtaining organic manure.
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How does continuous cultivation of crops impact soil fertility?
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How are fertilisers different from manure?
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How can the soil be replenished with nutrients through crop rotation?
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Why are legumes grown as fodder in one season and wheat in the next season in northern India?
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How does the excessive use of fertilisers impact the environment?
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Study Notes
Post-Harvest Grain Management
- Properly drying freshly harvested grains before storing them is crucial to prevent moisture from encouraging the growth of fungi, bacteria, and insects, which can lead to grain spoilage and loss.
Natural Pest Control
- Neem leaves are used when storing food grains at home because they have natural insecticidal and fungicidal properties that help repel pests and prevent grain spoilage.
Large-Scale Grain Storage
- Large godowns protect stored grains from pests and microorganisms by using techniques such as fumigation, sealed storage, and regular monitoring to maintain a clean and dry environment.
Soil Amendments
- Fertilisers are inorganic substances that provide essential nutrients to plants, whereas manure is organic matter derived from animal waste or plant residues that adds nutrients and improves soil structure.
Organic Manure Production
- Organic manure is obtained through the decomposition of organic matter, such as crop waste, animal waste, or compost, which releases nutrients that can be absorbed by plants.
Soil Fertility
- Continuous cultivation of crops can lead to soil fertility depletion, as crops absorb nutrients from the soil without replenishing them.
- Crop rotation is a technique used to replenish soil nutrients by planting legumes, which fix nitrogen, and then planting crops that require nitrogen, such as wheat.
Crop Rotation
- Legumes are grown as fodder in one season and wheat in the next season in northern India because legumes fix nitrogen, which is then utilized by wheat, reducing the need for fertilisers.
Environmental Impact
- Excessive use of fertilisers can harm the environment by contaminating water sources, reducing soil fertility, and promoting the growth of unwanted plants, such as weeds and algae.
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Description
Test your knowledge on the proper storage techniques for harvested grains to prevent spoilage and attacks from pests and microorganisms. Learn about the importance of drying grains before storage to reduce moisture content and protect them from damage.
