What is Solonchak soil?
What is Solonchak soil?
Solonchaks are defined by high soluble salt accumulation within 30 cm (1 foot) of the land surface and by the absence of distinct subsurface horizonation (layering), except possibly for accumulations of gypsum, sodium, or calcium carbonate or layers showing the effects of waterlogging.
Which of the following type of soil is also known as Solanchalk?
Solonchaks are largely confined to the arid and semi-arid climatic zones and to coastal regions in all climates. Common international names are ‘saline soils’ and ‘salt-affected soils’.
Which soil is known as Solonetz?
Solonetz soils are known internationally as sodic soils or alkali soils and they are strongly alkaline (pH>8.5).
What is the pH of saline soil?
The pH of saline soils is usually below 8.5. Because soluble salts help prevent dispersion of soil colloids, plant growth on saline soils is not generally constrained by poor infiltration, aggregate stability, or aeration.
What is Xerosols?
XEROSOLS (X) Other soils having a weak ochric A horizon and an aridic moisture regime; lacking permafrost within 200 cm of the surface. Luvic Xerosols (Xl) Xerosols having an argillic B horizon; a calcic or gypsic horizon may underlie the B horizon.
What is Solonetz soil Mcq?
Explanation: Solonetz soil is another name for sodic soil or alkali soil or black alkali soil. These are formed by excess accumulation of alkalies such as Na, K, etc.
What is black alkali soil?
The term “Black Alkali” is used to refer to soils high in sodium carbonate content. Sodium carbonate buffers pH levels in soils above 9.0. At that pH level, soil organic matter (or, humus) in soils can dissolve and wick up to the soil surface giving salt deposits on the soil surface a dark brown to black coloration.
Which crops best grow in saline soils?
Saline soils. Crops tolerant include cotton, alfalfa, cereals, grain sorghum, sugar beets, Bermuda grass, tall wheat grass and Harding grass. Salinity higher than desirable for greenhouse soils.
Is saline soil acidic or basic?
Acidic soils have pH less than 7 while basic soils have pH greater than 7. Meanwhile, neutral soils have pH 7. Alkaline soils and saline soils are two types of basic soils. Saline soil has pH in between 7 to 8.5 while alkaline soils have pH greater than 8.5.