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Not all black soils crack. The ones that are known to crack are classified as Vertisols by US Soil Taxonomy. They contain large amounts of shrink-swell clays known as smectites. Smectites shrink and crack when dry, and they expand when wet.
Smectites are also chemically active, and they readily form organo-mineral complexes with soil organic matter, which is what gives these soils the black color.
So in essence, the cracking is from the type of clay and the black color is from organic matter that is chemically bound to the clay. Black color is an indicator of organic matter, not cracking.
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What is another name for black soil?
Another name for black soil is "regur soil" or "black cotton soil."
What does black soil have in it?
Black soil, also known as black cotton soil or regur soil, is rich in nutrients such as calcium, magnesium, potassium, and phosphorus. It also contains a high percentage of organic matter which helps improve soil fertility and water retention. The dark color of black soil is due to its high organic content.
What is the colour of black soil?
Black soil is typically dark brown or black in color due to its high organic matter content. This dark color is a result of the presence of decomposed plant material and other organic matter that enriches the soil.
Names of soil in India only names?
The soil in India is based on years of geochemical processes and tectonic movements. The main types of soil are black soil, red soil and alluvial soil.
Why the black soil called black?
Black soil is called black because of its dark color, which is a result of high organic matter content and rich mineral substances. This soil type contains a high amount of humus, which provides nutrients to plants and contributes to its fertility.
What is a distinct layer of soil?
siol that is black like crack
Where is the deepest soil in the world?
your mum's crack
Can moles crack black walnuts?
no they can not crack walnuts
What type of soil is black cotton soil?
black soil
What is another name for black soil?
Another name for black soil is "regur soil" or "black cotton soil."
What are all the drives for genesect Pokemon black?
Burn Drive, Shock Drive, and Douse Drive.
How do you crack black walnuts?
get a craker
What is the black soil formed from?
Black soil is formed from basaltic rooks
How can you tell if a seed is about to sprout?
When you see the soil begi ning to crack
What year douse black butler tae places?
late 1800's- early 1900's
Why is the black land called black land?
It's called black land because black is fertile soil, and fertile soil is black. Soil is the land so it's named black land.
What rhymes with dark crevice?
black crack
