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The following data were recorded from an irrigatefiled
1. Field capacity = 20%
2. Permanent wilting capacity = 10%
3. permissible depletion of available soilmoisture = 50%
4. Dry unit weight of soil = 1500kgf/m3
5. Effective rainfall : 25mm
Based on these data the net irrigationrequire per meter depth of soil will be
  • a)
    75mm
  • b)
    125mm
  • c)
    50mm
  • d)
    25mm
Correct answer is option 'C'. Can you explain this answer?
Most Upvoted Answer
The following data were recorded from an irrigatefiled1. Field capacit...
Calculation of Net Irrigation Requirement per Meter Depth of Soil

Field Capacity and Permanent Wilting Capacity
- Field capacity = 20%
- Permanent wilting capacity = 10%

Permissible Depletion of Available Soil Moisture
- Permissible depletion of available soil moisture = 50%

Effective Rainfall
- Effective rainfall = 25mm

Dry Unit Weight of Soil
- Dry unit weight of soil = 1500kgf/m3

Calculation
- Available soil moisture = (field capacity - permanent wilting capacity) x depth of soil
- Available soil moisture = (20% - 10%) x 1m = 0.1m
- Permissible depletion of available soil moisture = 50% x 0.1m = 0.05m
- Net irrigation requirement per meter depth of soil = permissible depletion of available soil moisture - effective rainfall
- Net irrigation requirement per meter depth of soil = 0.05m - 0.025m = 0.025m or 25mm

Therefore, the correct answer is option C, which is 50mm.
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The following data were recorded from an irrigatefiled1. Field capacity = 20%2. Permanent wilting capacity = 10%3. permissible depletion of available soilmoisture = 50%4. Dry unit weight of soil = 1500kgf/m35. Effective rainfall : 25mmBased on these data the net irrigationrequire per meter depth of soil will bea)75mmb)125mmc)50mmd)25mmCorrect answer is option 'C'. Can you explain this answer?
Question Description
The following data were recorded from an irrigatefiled1. Field capacity = 20%2. Permanent wilting capacity = 10%3. permissible depletion of available soilmoisture = 50%4. Dry unit weight of soil = 1500kgf/m35. Effective rainfall : 25mmBased on these data the net irrigationrequire per meter depth of soil will bea)75mmb)125mmc)50mmd)25mmCorrect answer is option 'C'. Can you explain this answer? for Civil Engineering (CE) 2024 is part of Civil Engineering (CE) preparation. The Question and answers have been prepared according to the Civil Engineering (CE) exam syllabus. Information about The following data were recorded from an irrigatefiled1. Field capacity = 20%2. Permanent wilting capacity = 10%3. permissible depletion of available soilmoisture = 50%4. Dry unit weight of soil = 1500kgf/m35. Effective rainfall : 25mmBased on these data the net irrigationrequire per meter depth of soil will bea)75mmb)125mmc)50mmd)25mmCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Civil Engineering (CE) 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The following data were recorded from an irrigatefiled1. Field capacity = 20%2. Permanent wilting capacity = 10%3. permissible depletion of available soilmoisture = 50%4. Dry unit weight of soil = 1500kgf/m35. Effective rainfall : 25mmBased on these data the net irrigationrequire per meter depth of soil will bea)75mmb)125mmc)50mmd)25mmCorrect answer is option 'C'. Can you explain this answer?.
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