Word: chernozem
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Dates: during 1950-1959
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...north and central Russia by the cold, to most of the south by lack of rainfall. The Russian soil, starting at the city of Astrakhan at the mouth of the Volga and proceeding northwest, is at first semidesert, then improves to chestnut soil (dark brown soil), then to rich chernozem (fertile black soil), and finally declines to thin podsols (grey, leached, acid soil) - see map. Russia's huge long swatch of chernozem is the biggest in the world, but most of it lies north of the latitude of Bangor, Me. (45th parallel) which means that its yield is much...
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