Investigation of Vermicompost Influence on Seed Germination of the Endangered Wild Rubber Species Scorzonera tau-saghyz

In this paper, the effect of an organic fertilizer, namely, “vermicompost tea” (VCT), on germination seeds rare wild species Scorzonera tau-saghyz Lipsch. et & G.G. Bosse was studied. S. is alternative rubber plant to Hevea brasiliensis, and it widely distributed grew well in northwestern spur Tien Shan pre-war years (1931–1943). recent decades, number natural populations has declined sharply due climate change impact anthropogenic factors. context, become necessary restore species. One critical phases restoration surviving domestication seed germination. The approaches that have been explored increase germination, such as stratification dressing with ethyl mercuric chloride, not yielded good results. current study covered 4 8 h short-term treatments 1, 5 10% VCT. priming VCT found significantly from 39.0 (in control) 76.7% improve seedling vigor, mean time, weight. combination soaking for cultivating seedlings soil 20% vermicompost further improved both growth. incorporation lengthened main root, which normally accumulates rubber, increased its crude biomass by 1.6 times compared control.