BEHAVIOR FEATURES OF CLOVER HYBRID ON COALMINE OVERBURDEN DUMPS IN KUZBAS AND ON LEACHED CHERNOZEM SOILS IN FOREST STEPPE OF WESTERN SIBERIA
Results are given from a multi-year study of Trifolium hybridum in agrophytocoenoses formed on the leveled opencut spoil banks in Kuzbas and in the sowings on leached chernozem soils in the established experimental plot of the Siberian Research Institute of Fodder Crops, Krasnoobsk, Novosibirsk Region. T. hybridum is kept in the sowings on the spoil banks for more than 10 years, and usually shows oneself a patient or stress tolerant. Optimal conditions for growth and development of this species on disturbed soils are formed in the grass mixture on the sludge pond banks. It has been revealed that T. hybridum is a species promising for reestablishment of plant cover damaged during opencast coal mining. The studies on leached chernozem were performed in 2001-2007 at the central experimental base of the Siberian Research Institute of Fodder Crops located in forest steppe of Western Siberia. Weather conditions in the area during the studies differed significantly. Wet and cool were 2000 and 2002; arid 2001, 2003, 2006 and the first half of the 2004 growing period, the second half of which was wet, and vice versa in 2005 and 2007. This had an effect on the growth and development of clover plants. The yield of green mass varied dependent on years of use and cultivars studied from 0.17 to 6.66 kg/m2, seeds 1.1-101 g/m2. The cultivar Pervenets was found to be promising for conditions of Western Siberia.