FORESTRY
SOIL SCIENCE
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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salt
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sodium
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nutrients
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air
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water
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Detailed explanation-1: -Soil salinity is the amount of dissolved salts in the soil solution (the aqueous phase in the soil). The process of accumulating soluble salts in the soil is known as salinization. Salts in the soil have an important effect on the functions and management.
Detailed explanation-2: -The presence of excess salts on the soil surface and in the root zone characterizes all saline soils (Plate 1). The main source of all salts in the soil is the primary minerals in the exposed layer of the earth’s crust.
Detailed explanation-3: -The major problem with saline soils is the presence of soluble salts, primarily Cl−, SO42−, and sometimes NO3−. Salts of low solubility, such as CaSO4 and CaCO3, may also be present. Because exchangeable Na+ is not a problem, saline soils are usually flocculated and water permeability is good (Richards, 1954).