FORESTRY
SOIL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Location of Humus
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-has bits of decayed plants and animals-adds nutrients
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-underneath plants and grass-above topsoil
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-dark-has the most humus and minerals
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-under humus-above subsoil
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Explanation:
Detailed explanation-1: -The uppermost horizon is called the topsoil layer. The topsoil layer is a mixture of sand, silt, clay and broken down organic matter, called humus. Humus is rich, highly decomposed organic matter mostly made from dead plants, crunched-up leaves, dead insects and twigs.
Detailed explanation-2: -It contains more organic material than the subsoil and so it is darker in color. Humus is the decayed remains of the plants and animals, which breaks down in thesoil by the microbes. Therefore, this happens more in the topsoil, than in any other soil layer. Thus, the top layer of soil has more humus than other layers.
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