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Groundwater Recharge

With respect ...

Question

With respect to irrigation efficiencies, the ratio of the quantity of water stored into the root zones of crops to the quantity of water actually delivered into the field is called

A

Water-storage efficiency

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B

Water-application efficiency

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C

Water-conveyance efficiency

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D

Water-use efficiency

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Solution

The correct option is B Water-application efficiency
b

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Q. The ratio of the quantity of water stored in the root zone of the crops to the quantity of water actually delivered in the field is known as:

Q. In an irrigation system, water was delivered to the field in ditches spaced about 30 m apart and was allowed to seep into the ground to maintain the water table at such a height that the water is available to the crops through the capillary fringe. This method of irrigation is called

Slow application of water drop by drop to the root zone of a crop is also called as drip irrigation.

Q. In an irrigated area 12 m³/s of water is diverted to a

0.32 k m^{2}

field area for four hours. The soil moisture measurement in the field done after irrigation showed that 0.4 m of water has been stored in the root zone. The water application efficiency (correct to nearest decimal) in this case is:

Q. The consumptive use of water for a crop during a particular stage of growth is 3.0 mm/day. The maximum depth of available water in the root zone is 80 mm. Irrigation is required when the amount of available water is 55% of the maximum available water in the root zone. The frequency of irrigation should be?

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