(redirected from Black grass)
Also found in: Dictionary, Thesaurus, Medical, Wikipedia.


Chernobyl (chĭrnōˈbyēl), Ukr. Chornobyl, abandoned city, N Ukraine, near the Belarus border, on the Pripyat River. Ten miles (16 km) to the north, in the town of Pripyat, is the Chernobyl nuclear power station, site of the worst nuclear reactor disaster in history. On Apr. 25, 1986, during an unauthorized test of one of the plant's four reactors, engineers initiated an uncontrolled chain reaction in the core of the reactor after disabling emergency backup systems. On Apr. 26, an explosion ripped the top off the containment building, expelling radioactive material into the atmosphere; more was released in the subsequent fire. Only after Swedish instruments detected fallout from the explosion did Soviet authorities admit that an accident had occurred. The reactor core was sealed off by air-dropping a cement mixture, but not before eight tons of radioactive material had escaped. Subsequently, the damaged reactor building was enclosed in a concrete and steel “sacrophagus,” a massive structure that was constructed around it.

Twenty firefighters died immediately from overexposure to radioactivity, while hundreds suffered from severe radiation sickness. Pripyat, Chernobyl, and nearby towns were evacuated. People who lived near the plant in Ukraine and Belarus at the time have seen a greatly increased incidence of thyroid cancer, and genetic mutations have been discovered in children later born to exposed parents. Nearly all thyroid cancer cases, however, were successfully treated. Ukraine has estimated that some 4,400 people died as a result of the accident and during its cleanup, but a 2005 report prepared by several UN agencies and regional governments indicated that some 50 deaths were directly attributable to radiation from the disaster and an estimated 4,000 deaths might ultimately result from it, mainly due to higher cancer rates. That prediction was challenged the following year by a Greenpeace report that said more than 90,000 deaths might result, roughly half of which would be due to conditions other than cancer. The agricultural economies of E and N Europe were temporarily devastated, as farm products were contaminated by fallout. One Chernobyl reactor remained in operation until Dec., 2000, when the complex was shut down.

An exclusion zone encompassing the areas of highest radiation and including some 1,000 sq mi (2,600 sq km) was ultimately established, but many population centers outside the area were also abandoned. More than 90,000 people were relocated, though a few illegally returned. Wildlife in the area, however, has reestablished itself, flourishing to some degree in the absence of human activity. In 2016 a new confinement structure was placed over the entombed reactor.


See S. Alexievich, Voices from Chernobyl (2005); S. Plokhy, Chernobyl: The History of a Nuclear Catastrophe (2018); K. Brown, Manual for Survival: A Chernobyl Guide to the Future (2019); A. Higginbotham, Midnight in Chernobyl (2019).

The Columbia Electronic Encyclopedia™ Copyright © 2022, Columbia University Press. Licensed from Columbia University Press. All rights reserved.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a city (since 1841) and administrative center of Chernobyl’ Raion, Kiev Oblast, Ukrainian SSR. Situated on the Pripiat’ River, 18 km from the Ianov railroad station on the Chernigov-Ovruch line. Chernobyl’, a river landing, has an iron foundry, a cheese plant, a ship-repair dock, and a workshop of an artistic production association. The city has a medical school.

The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.


a town in N Ukraine; site of a nuclear power station accident in 1986
Collins Discovery Encyclopedia, 1st edition © HarperCollins Publishers 2005
References in periodicals archive ?
The meeting paid particular attention to black grass resistance problems and how important cultural control now is in the fight against the weed.
"I turned a page and saw a photo of what looked like black grass with foliage like tarantula legs, Ophiopogon planiscapus `Nigrescens' (pictured).
FOR winter interest combine the bright stems of willows and dogwoods with ornamental sedge, the black grass Ophiopogon Nigrescens and heathers with colourful flowers and foliage.
The wee Festuca glauca "Blue Glow" is low growing with a green blue tinge and looks great, topped with grit and planted in pale off-white terrazzo pots as does Ophiopogon planiscapus "Nigrescens" - the black grass which prefers moist but well drained soil but is happy in sun or partial shade.
David's planting scheme features the black grass, ophiopogon, dark-leaved bugle and the Black Lace elderberry, contrasted with silver-leaved Artemisia Powys Castle and astilias.
FOR a jungle theme of hostas, spiky yukka and black grass, the key is rapid summer growth - so enrich the soil with well-rotted manure or compost before you plant.
The black grass Ophiopogon Nirescens (above) is a good partner for the white and red spiny stems of Rubus thibetamus (silver fern).
Here Lyn and Peter use strap-leaved black grass, Ophiopogon Nigrescens, to contrast with the silver-grey succulent rosettes of echiveras - a combination which would work just as well in a shallow pot on the patio.
For a stylish contemporary look, go for a monochrome scheme by partnering stachys with a black grass called Ophiopogon Nigrescens.
The black grass, ophiopogon, black bamboo and black phormiums were used in the Garden of Night by Capel Manor College and the Longacres Landscape teams Yin and Yang garden for dramatic effect.
THE deep foliage colour of the black grass, Ophiopogon planiscapus Nigrescens, makes a striking contrast to the bright flowers of Rudbeckia hirta Toto and soft green fronds of the fern.