Question:
What will be the effect of tillage on the thermal conductivity of soil?
What will be the effect of tillage on the thermal conductivity of soil?
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Soil thermal conductivity:
- Increases with bulk density and moisture content.
- Decreases with tillage (increased porosity).
- Higher thermal conductivity = better heat transfer.
- Increases with bulk density and moisture content.
- Decreases with tillage (increased porosity).
- Higher thermal conductivity = better heat transfer.
Updated On: Aug 27, 2026
- Remain unchanged
- Decreases
- Increases
- First increases then decrease
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The Correct Option is B
Solution and Explanation
Step 1: Understanding the Question:
This question tests knowledge of soil physical properties and the effect of tillage.
Step 2: Detailed Explanation:
Tillage breaks soil aggregates and increases porosity.
Increased porosity reduces soil bulk density and thermal conductivity.
Air is a poor conductor of heat, so more air spaces reduce thermal conductivity.
Thus, tillage decreases the thermal conductivity of soil.
Step 3: Final Answer:
Thus, tillage decreases the thermal conductivity of soil, which corresponds to option (B).
[0.5cm]
This question tests knowledge of soil physical properties and the effect of tillage.
Step 2: Detailed Explanation:
Tillage breaks soil aggregates and increases porosity.
Increased porosity reduces soil bulk density and thermal conductivity.
Air is a poor conductor of heat, so more air spaces reduce thermal conductivity.
Thus, tillage decreases the thermal conductivity of soil.
Step 3: Final Answer:
Thus, tillage decreases the thermal conductivity of soil, which corresponds to option (B).
[0.5cm]
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