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What is the moisture depth available for evapotranspiration in root zone of 1 m depth soil, if dry weight of soil is 1.5 g/cm3, field capacity is 30%, and permanent wilting point is 10%? A. 450 mm B. 300 mm C. 200 mm D. 150 mm
  • a)
    450 mm
  • b)
    300 mm
  • c)
    200 mm
  • d)
    150 mm
Correct answer is option 'B'. Can you explain this answer?
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To calculate the moisture depth available for evapotranspiration in the root zone of 1 m depth soil, we need to consider the dry weight of the soil, field capacity, and permanent wilting point.

Given:
- Dry weight of soil = 1.5 g/cm3
- Field capacity = 30%
- Permanent wilting point = 10%

The moisture depth available for evapotranspiration can be calculated using the formula:

Moisture Depth = (Field Capacity - Permanent Wilting Point) * Root Zone Depth

1. Calculate the moisture content at field capacity:
Field Capacity Moisture Content = Field Capacity * Dry Weight of Soil
Field Capacity Moisture Content = 30% * 1.5 g/cm3 = 0.45 g/cm3

2. Calculate the moisture content at permanent wilting point:
Permanent Wilting Point Moisture Content = Permanent Wilting Point * Dry Weight of Soil
Permanent Wilting Point Moisture Content = 10% * 1.5 g/cm3 = 0.15 g/cm3

3. Calculate the moisture depth available for evapotranspiration:
Moisture Depth = (Field Capacity Moisture Content - Permanent Wilting Point Moisture Content) * Root Zone Depth
Moisture Depth = (0.45 g/cm3 - 0.15 g/cm3) * 1 m = 0.3 g/cm3 * 1 m

Therefore, the moisture depth available for evapotranspiration in the root zone of 1 m depth soil is 0.3 g/cm3 or 300 mm.

Hence, the correct answer is option B) 300 mm.
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What is the moisture depth available for evapotranspiration in root zone of 1 m depth soil, if dry weight of soil is 1.5 g/cm3, field capacity is 30%, and permanent wilting point is 10%? A. 450 mm B. 300 mm C. 200 mm D. 150 mma)450 mmb)300 mmc)200 mmd)150 mmCorrect answer is option 'B'. Can you explain this answer?
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