What is irrigation? Describe two methods of irrigation which conserve water.
What is irrigation? Describe two methods of irrigation which conserve water.
The artificial method of watering the plants for assisting in their growth is called irrigation. Main sources of irrigation are wells, tube-wells, ponds, lakes, rivers.
Two methods which help us to conserve water are:
(i) Sprinkler irrigation system: This irrigation system has an arrangement of vertical pipes with rotating nozzles on the top. It is more useful in the uneven and sandy land where sufficient water is not available.
(ii) Drip irrigation system: This irrigation system has an arrangement of pipes or tubes with very small holes in them to water plants drop by drop just at the base of the root. It is very efficient as water is not wasted at all.
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Cutting and gathering of crops after maturation is known as (a) harvesting (b) threshing (c) broadcasting (d) tilling
5 years ago
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Chemicals which kill weeds are known as (a) fertilizers (b) pesticides (c) weedicides (d) None of these
5 years ago
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Chemical substances rich in specific nutrients are called (a) manures (b) fertilisers (c) pesticides (d) weedicides
5 years ago
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Leaving the agricultural land uncultivated for one or more seasons is known as (a) field fallow (b) crop-rotation (c) manuring (d) threshing
5 years ago
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The method of transferring seedlings from nursery to field is known as (a) broadcasting (b) transplantation (c) crop-rotation (d) harvesting
5 years ago
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