FORESTRY
SOIL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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timber soil
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glacial till
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alluvium
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topography
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prairie soil
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Detailed explanation-1: -Laterite Soils: formed as a result of the accumulation of organic matter derived from forest growth.
Detailed explanation-2: -Desert soil is mostly sandy soil (90–95%) found in low-rainfall regions. It has a low content of nitrogen and organic matter with very high calcium carbonate and phosphate, thus making it infertile. The amount of calcium is 10 times higher in the lower layer than in the topsoil.
Detailed explanation-3: -Subsoil. The B horizon or subsoil is where soluble minerals and clays accumulate. This layer is lighter brown and holds more water than the topsoil because of the presence of iron and clay minerals. There is less organic material.
Detailed explanation-4: -Soil colour is usually due to 3 main pigments: black-from organic matter. red-from iron and aluminium oxides. white-from silicates and salt.