Assuming a soil field capacity of 27.2%, compute for the volume of water needed to irrigate a 1 ha corn field if the available moisture was depleted by 25% and the permanent wilting point is 12.43%. Rooting depth of corn is assumed to be 0.5 meter and soil bulk density is 1.35 g/cc. Assume that conveyance and other losses are 15% of the total volume of water needed

Assuming a soil field capacity of 27.2%, compute for the volume of water needed to irrigate a 1 ha corn field if the available moisture was depleted by 25% and the permanent wilting point is 12.43%. Rooting depth of corn is assumed to be 0.5 meter and soil bulk density is 1.35 g/cc. Assume that conveyance and other losses are 15% of the total volume of water needed

Structural Analysis

6th Edition

ISBN:9781337630931

Author:KASSIMALI, Aslam.

Publisher:KASSIMALI, Aslam.

Chapter2: Loads On Structures

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Problem 1P

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Basic Concepts of Water Resource Sustainability

The majority of the earth's surface is composed of water. The water which is available for use by the living beings on earth comes from various water resources. Water resources are the naturally occurring water bodies that are intended to be used by the living beings on earth for drinking and other uses. Water resources provide 3% as freshwater, 97% as saltwater, two-thirds of which are frozen as glaciers and ices. The remaining water which generally doesn't remain frozen are the water resources found underground, precisely known as groundwater. The majority of these water sources act as non-convention sources of power generation, like in hydropower stations.

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Assuming a soil field capacity of 27.2%, compute for the volume of water needed to
irrigate a 1 ha corn field if the available moisture was depleted by 25% and the permanent
wilting point is 12.43%. Rooting depth of corn is assumed to be 0.5 meter and soil bulk
density is 1.35 g/cc. Assume that conveyance and other losses are 15% of the total
volume of water needed

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The water content in a field has to be increased from 14% to 21%. The density of soil in the field is 1.4 g/cm3 and the effective root zone is at a depth of 76cm. Determine the required depth of water to be irrigated.
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Irrigation water is to be provided to a crop in a field to bring the moisture content of the soil from the existing 18% to the field capacity of the soil at 28%. The effective root zone of the crop is 70 cm. If the densities of the soil and water are 1.3 g/cm³ and 1.0 g/cm³ respectively, the depth of irrigation water (in mm) required for irrigating the crop is
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