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The leaching requirement of a soil is 10%. If the consumptive use requirement of the crop is 90 mm, then the depth of water required to be applied to the field is
- a)80 mm
- b)90 mm
- c)100 mm
- d)110 mm
Correct answer is option 'C'. Can you explain this answer?
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The leaching requirement of a soil is 10%. If the consumptive use req...
Leaching requirement in % is given by
Where, Di = Total irrigation water depth to be applied
Cu=Consumptive use
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The leaching requirement of a soil is 10%. If the consumptive use req...
Leaching Requirement and Consumptive Use Requirement
Leaching requirement is the amount of water needed to be applied to the soil to remove soluble salts and prevent soil salinity. It is usually expressed as a percentage of the applied water.
Consumptive use requirement is the amount of water needed by the crop to satisfy its evapotranspiration needs. It is the sum of water lost by evaporation from the soil and transpiration from the plant.
Calculation
Given:
Leaching requirement = 10%
Consumptive use requirement = 90 mm
To calculate the depth of water required to be applied to the field, we need to consider both the leaching requirement and the consumptive use requirement.
Leaching requirement = 10% of applied water
Consumptive use requirement = evapotranspiration (ET) = water lost by evaporation from the soil + water lost by transpiration from the plant
Total water requirement = leaching requirement + consumptive use requirement
Total water requirement = 10% of applied water + 90 mm
Total water requirement = 0.1 * applied water + 90 mm
We can rearrange the equation to get the depth of water required to be applied to the field:
Depth of water = (total water requirement) / (field area)
Assuming a field area of 1 hectare (10,000 square meters), we get:
Depth of water = [(0.1 * applied water) + 90 mm] / 10,000 m²
Solving for the depth of water, we get:
Depth of water = 100 mm
Therefore, the depth of water required to be applied to the field is 100 mm.
Leaching requirement is the amount of water needed to be applied to the soil to remove soluble salts and prevent soil salinity. It is usually expressed as a percentage of the applied water.
Consumptive use requirement is the amount of water needed by the crop to satisfy its evapotranspiration needs. It is the sum of water lost by evaporation from the soil and transpiration from the plant.
Calculation
Given:
Leaching requirement = 10%
Consumptive use requirement = 90 mm
To calculate the depth of water required to be applied to the field, we need to consider both the leaching requirement and the consumptive use requirement.
Leaching requirement = 10% of applied water
Consumptive use requirement = evapotranspiration (ET) = water lost by evaporation from the soil + water lost by transpiration from the plant
Total water requirement = leaching requirement + consumptive use requirement
Total water requirement = 10% of applied water + 90 mm
Total water requirement = 0.1 * applied water + 90 mm
We can rearrange the equation to get the depth of water required to be applied to the field:
Depth of water = (total water requirement) / (field area)
Assuming a field area of 1 hectare (10,000 square meters), we get:
Depth of water = [(0.1 * applied water) + 90 mm] / 10,000 m²
Solving for the depth of water, we get:
Depth of water = 100 mm
Therefore, the depth of water required to be applied to the field is 100 mm.
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The leaching requirement of a soil is 10%. If the consumptive use requirement of the crop is 90 mm, then the depth of water required to be applied to the field isa)80 mmb)90 mmc)100 mmd)110 mmCorrect answer is option 'C'. Can you explain this answer?
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