After how many days the irrigation water should be applied to the land to ensure efficient irrigation for the following conditions.1)Field capacity = 40% 2)P.W.P. = 15% (3) dry density of soil = 1.7 gm/cc (4) Effective depth of root zone = 0.9 m (5) daily consumptive use of water 12 mm (6) readily available moisture = 50% of the available moisture.

During a articular stage of the growth of a crop, consumptive use of water is 3.5 mm/day.what i the interval in days between irrigation, and the depth of water to be applied when the amount of water available in the soil is 60% of the maximum depth of available water in the root zone which is 80 mm.

If wheat requires about 7.5 cm of water after every 28 days ,and the base period for wheat is 140 days ,then delta of wheat is 

Irrigation water has to be supplied to the crops when moisture content level falls

1. below field capacity

2. to wilting point

3. below wilting point

which of the above statements are correct ?

leaching is process

consider following terms relater to irrigation requirements                 

1.consumptive irrigation requirement                                                   

2.Net irrigation Requirement                                                             

3.Field irrigation Requirement                                                           

4.Gross irrigation Requirement

if the discharge required for differnt crops is 0.4 cumecs in the field and the capacity factor and time factors are 0.8 and 0.5 respectively then what is design discharge for the distributary at its head 

statement 1: The duty of water decreases as the point of its measurement moves away from the field of application.                                                        statement 2: Duty depends on soil characteristics

consumptive use is

The duty for a crop with a base period  for 140 days is 3456 ha/cumec. the delta for crop is (in m)