Irrigation Engineering [1]
21) The intensity of irrigation means
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(a) percentage of culturable commanded area to be irrigated annually
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(b) percentage of gross commanded area to be irrigated annually
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(c) percentage of the mean of culturable commanded area and the gross commanded area to be irrigated annually
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(d) total depth of water supplied by the number of waterings
22) Kor watering irrigation is defined as
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(a) the first watering which is given to a crop when the crop is a few centimetres high
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(b) the first watering which is given to a plot when the crop is transplanted
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(c) the first watering which is given to seeds sown in the plot for germination
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(d) the first watering which is given to a crop before transplanting
23) Available moisture may be defined as the
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(a) moisture content at permanent wilting point
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(b) difference in water content of the soil between field capacity and permanent wilting
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(c) maximum moisture holding capacity
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(d) all of the above
24) The field capacity of a soil depends upon
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(a) capillary tension in soil
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(b) porosity of soil
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(c) either (a) or (b)
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(d) both (a) and (b)
25) Capillary water is a useful soil moisture for the growth
of plants.
