The black-earth belt (or "chernozem") stretched in a broad band north-east from the Romanian border to include Ukraine, Central Agricultural Region, Middle Volga, south-west Urals and south-western Siberia. This expanse, together with the alluvial zone of the Kuban in the North Caucasus, constituted the fertile `grain-surplus' steppe areas of cereal production. In the non-black earth grain-deficit areas, with their poor soils, the peasants turned to cottage industry (and increasingly factory industry), as well as livestock breeding and the cultivation of vegetables and industrial crops, to make up their livelihoods. They relied on `imports' from the grain-surplus regions to make up the deficiency of cereals.