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The quantum of water contained in the soil pores which cannot be extracted by gravity drainage is called ______
- a)pellicular water
- b)capillary water
- c)hygroscopic water
- d)available water
Correct answer is option 'A'. Can you explain this answer?
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The quantum of water contained in the soil pores which cannot be extra...
When the saturated formations are drained under the action of gravity drainage, the volume of water drained is less than the volume of void space. The water contained in these voids cannot be drained out by force of gravity. The water which is always retained by these interstices due to molecular attraction is called pellicular water.
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The quantum of water contained in the soil pores which cannot be extra...
Explanation:
Pellicular water:
Pellicular water refers to the quantum of water held in the soil pores that cannot be extracted by gravity drainage. This water is retained against the force of gravity due to surface tension and capillary action within the soil pores.
Capillary water:
Capillary water is the water held in the soil pores above the water table. This water is held in the soil due to capillary action, which allows water to move upwards through small spaces in the soil against the force of gravity. Capillary water is accessible to plant roots and plays a crucial role in plant growth.
Hygroscopic water:
Hygroscopic water is the water held tightly by the soil particles and is not available to plants. This water is strongly bound to the soil particles and requires a lot of energy to extract. It is not easily accessible to plant roots.
Available water:
Available water is the difference between the field capacity and the permanent wilting point of the soil. It represents the amount of water that is readily available to plants for uptake. This water is essential for plant growth and is crucial for maintaining soil moisture levels.
In the context of the given question, the correct answer is pellicular water as it specifically refers to the water held in the soil pores that cannot be extracted by gravity drainage. This distinction is important to understand the different water holding capacities of soil and their impact on plant growth.
Pellicular water:
Pellicular water refers to the quantum of water held in the soil pores that cannot be extracted by gravity drainage. This water is retained against the force of gravity due to surface tension and capillary action within the soil pores.
Capillary water:
Capillary water is the water held in the soil pores above the water table. This water is held in the soil due to capillary action, which allows water to move upwards through small spaces in the soil against the force of gravity. Capillary water is accessible to plant roots and plays a crucial role in plant growth.
Hygroscopic water:
Hygroscopic water is the water held tightly by the soil particles and is not available to plants. This water is strongly bound to the soil particles and requires a lot of energy to extract. It is not easily accessible to plant roots.
Available water:
Available water is the difference between the field capacity and the permanent wilting point of the soil. It represents the amount of water that is readily available to plants for uptake. This water is essential for plant growth and is crucial for maintaining soil moisture levels.
In the context of the given question, the correct answer is pellicular water as it specifically refers to the water held in the soil pores that cannot be extracted by gravity drainage. This distinction is important to understand the different water holding capacities of soil and their impact on plant growth.
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The quantum of water contained in the soil pores which cannot be extracted by gravity drainage is called ______a)pellicular waterb)capillary waterc)hygroscopic waterd)available waterCorrect answer is option 'A'. Can you explain this answer?
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