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 (chĕr′nə-zĕm′, chîr′nə-zyôm′)
A very black topsoil, rich in humus, typical of cool to temperate semiarid regions such as the grasslands of Ukraine and southern Russia.

[Russian chernozëm : chërnyĭ, black + Old Russian zemĭ, earth; see dhghem- in Indo-European roots.]

cher′no·zem′ic adj.


(ˈtʃɜːnəʊˌzɛm) or


(Geological Science) a black soil, rich in humus and carbonates, in cool or temperate semiarid regions, as the grasslands of Russia
[from Russian, contraction of chernaya zemlya black earth]


(ˈtʃɜr nəˌzɛm, ˈtʃɛər-)

a soil common in cool or temperate semiarid climates, black and rich in humus and carbonates.
[1835–45; < Russian <chërn(yĭ) black + zemlyá earth]
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References in periodicals archive ?
The monograph presents and summarizes the results of three-year research of the staff of the department of agrochemistry and plant physiology on the effect of fertilizer systems on the productivity of the link of grain-growing crop rotation on leached chernozems.
However, as became clear in their discussions with their US colleagues, the soil scientists of the Soviet delegation did not consider the prairie soils to be identical to "real" Russian black earths and so categorized them as "degraded chernozems.
The soils of the river banks in the couloir are advanced chernozems cambic and clay-illuvial--, while the soils of the Mures meadow and of the major branches around the vineyard are alluvial soils, often flooded, or phreatic-gleyic ones, which are not suitable for winegrowing.
This horizon, although less frequently, is also found in gleysols, vertisols, andosols, chernozems, kastanozems, phaeozems, durisols, calcisols, lixisols, luvisols and leptosols (IUSS Working Group WRB, 2015).
The soil profiles of Blato (Figure 2) and Knezeves (Figure 3) were classified as Luvic Chernozems.
Fertile soils of Perm Krai are considered to be forest grey soils and chernozems of forest-steppe areas.
Leached chernozems differ according to their texture, thickness of humus horizons and depth of gravel bedding.
The soils of Ialomita county and Fetesti town are represented mainly by chernozems, alluvial and cambic soils.
purpurascens could technically be considered Dark Brown Chernozems.
Azotobacter development is usually found in chernozems in the spring, during the wet season; while is hardly found in dryland soil (Karaguyshieva and Illyaletdinov, 1957).
The most common soils in these areas are the ordinary and southern chernozems, meadow and meadow-chernozem soil, as well as salt licks, and their complexes.