FORESTRY
SOIL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which layer of soil has only a little bit of humus?
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topsoil
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subsoil
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bedrock
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None of the above
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Explanation:
Detailed explanation-1: -B horizon or subsoil – It is the horizon present just below the topsoil and above the bedrock. It contains less humus. Moreover, this layer holds more water than topsoil and is light brown due to the presence of clay soil.
Detailed explanation-2: -Humus remains and clay accumulate in subsoil, but the teeming macroscopic and microscopic organisms that make the topsoil rich with organic matter spend little time in the subsoil layer. Below the subsoil is a layer of partially disintegrated rock, and underlying bedrock.
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