a. How is the new method like drip irrigation useful for the farmers?
b. (i) Why is irrigation needed for agricultural development?
(ii) Mention any two drawbacks of conventional method of irrigation.
c. Give reason for each of the following
(i) Inundation canals are also called “flood water” canals?
(ii) Why is canal irrigation relatively absent in Peninsular India?
(iii) Ground water reserves are depleting at a fast rate.
Answers
Answer :-
a. Drip irrigation is a type of micro-irrigation system that has the potential to save water and nutrients by allowing water to drip slowly to the roots of plants, either from above the soil surface or buried below the surface. The goal is to place water directly into the root zone and minimize evaporation.
b. i) By irrigation can stabilize, i.e. increase food production and encourage the development of livestock breeding, processing and other branches of economy in the region of Vojvodina and Srem area.
ii) •Due to seepage in drains, wastage of water is caused.
•Machines cannot be used m this method because during spray of insecticides or fertilizers, the earthen walls of basins are damaged.
•There IS imbalance in distribution of labour.
•Creation of problem of water logging.
c. i) don't know.
ii) The digging of canals in rocky and uneven areas is difficult and uneconomic. Thus the canals are practically absent from the Peninsular plateau area. However, the coastal and the delta regions in South India do have some canals for irrigation.
iii) Groundwater depletion most commonly occurs because of the frequent pumping of water from the ground. 2. We continuously pump groundwater from aquifers and it does not have enough time to replenish itself. ... Agricultural needs require a large amount of groundwater.