Plast(redirected from Ukrayins'ky Plast)
a city under oblast jurisdiction in Cheliabinsk Oblast, RSFSR. Situated on the eastern slopes of the Southern Urals, 40 km west of the Nizhneuvel’skaia railroad station on the Chelia-binsk-Troitsk line, 122 km southwest of Cheliabinsk. Population, 22,000 (1974). There is gold mining at the Kochkar’ mines, and marble is quarried nearby.
(1) The Russian designation for newly plowed virgin lands, long fallow, short-term fallow, and perennial grasslands. The soil is well structured and is rich in root residue and humus. It contains relatively few pests, agents of disease, and weed seeds. Valuable agricultural crops, including wheat (especially durum wheat), flax, and millet, are raised on plast.
(2) The Russian designation for a strip of excessively moist soil of heavy texture (clay) or with perennial grassy vegetation formed by plowing with the plow body. Mature, light-textured (sandy) soil crumbles easily and does not form plasty.