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प्रश्न
Write down two advantages of fertilizer over manure
उत्तर
The advantages of fertiliser over manure are as follows:
1. Fertiliser is very rich in plant nutrients such as nitrogen, phosphorous, and potassium, whereas manure has a low nutrient content.
2. Fertiliser is soluble in water and hence readily absorbed by the crop plants, whereas nutrients in manure are absorbed very slowly as nutrients exist locked inside the organic compounds of humus.
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संबंधित प्रश्न
What are the advantages of inter-cropping?
How does chemical nature of the soil change due to continued use of chemical fertilizers ?
Define manure. What are different manures and how do they affect the soil ?
Why are leguminous crops desirable in crop rotation?
Define plant breeding? Describe the various methods of plant breeding.
Describe the biological method of weed control.
Give two examples each of
(a) Narrow leaved rabi season weed.
(b) Broad leaved kharif season weed.
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.
Compare between mixed cropping and intercropping. Write down from advantage of both of these techniques.
Which one is not a source of carbohydrates?
