In which of the following irrigation methods is the first watering done after the plants have grown a few cm high?

Find the critical height of a gravity dam given the specific gravity of concrete as 2.5 and the crushing stress of the dam material as 500,000 kg/m².

What is the cultureable command area (CCA) for minor irrigation projects like tube wells and boring work?

The soil has a field capacity of 35%, a permanent wilting point of 20%, and a root zone depth of 120 cm. Assuming a specific dry unit weight of 2, calculate the storage capacity of the soil.

After how many days will you supply water to the soil to ensure efficient irrigation of the crop? Given, the depth of water applied is 0.119 m and the daily consumption is 11 × 10⁻³ m.

The root zone of irrigation soil has a dry unit weight of 15 kN/m³ and a field capacity of 30%. The permanent wilting point is 8%. Determine the depth of moisture in the root zone per metre depth of the soil at field capacity.

Determine the Gross irrigation requirement for an irrigation system if the crop's consumptive use is 200 cm in depth and the rainfall excess is 30 cm. Assume the water application efficiency is 50% and the conveyance efficiency is 90%.

A reservoir with live storage of 200 million cubic meters irrigates 30,000 hectares (1 hectare = 10,000 m²) of a crop with two fillings of the reservoir. If the base period of the crop is 110 days, the duty for this crop (in hectares per cubic meter per second, rounded to the nearest integer) will be:

The moisture content of soil in the root zone of an agricultural crop at certain stage is found to be 0.05. The field capacity of the soil is 0.15. The root zone depth is 1.1 m. The consumptive use of crop at this stage is 2.5 mm/day and there is no precipitation during this period. Irrigation efficiency is 65%. It is intended to raise the moisture content to the field capacity in 8 days through irrigation. The necessary depth of irrigation is (γd = 1.5)