Signs of spring: dandelions are blossoming.
"Russian dandelion" - coke sahыz
In the 20-30 years of the twentieth century took place in our country industrialization; in the late 30's became apparent threat of war. And for peace, and for the military was needed rubber, and natural (synthetic inferior to him in many ways). Natural rubber is obtained mainly from a tropical plant rubber trees, and for us it was almost inaccessible and too expensive. I had to find my rubber plant. Was engaged in a number of scientists, and found more than 600 plants from which it was possible to get rubber. The best (in the roots of wild plants - up to 27% rubber) proved Kok saghyz - plant intermountain valleys of the eastern Tien Shan, looks almost indistinguishable from ordinary dandelion.
Prepared from the cook-sagyz rubber was no worse than that which was obtained from Hevea (in the 70s it has been confirmed by biochemical studies). Since 1933, the cook-saghyz was introduced into the culture. It was grown mainly in the European part of the Soviet Union, including Belarus. Agronomists have developed special methods of cultivation of kok-sagyz seeds and rubber production. Then it was called "the king of fields" and under the best growing land withdrawn. However, there were many problems in the European part of the USSR Tien Shan dandelion growing too well and quickly rubber-lost property; collect seeds had manually digging shallow roots - also; "Rubber" plantations needed constant weeding, otherwise they quickly "occupied" nekauchukonosny relative - a common dandelion.
Since 1954, in connection with the development of synthetic rubber, isoprene, as well as extremely low profitability of production, Kok saghyz no longer grown.
But the problem of synthetic rubber, scientists can not solve so far - on the qualities he is still inferior to natural. Therefore Hevea juice produced by the same primitive methods that a hundred years ago, is still in demand by modern industry, and every year this need only increases (rubber prices rose from 2002 to 2008 seven times). Unpretentious Kok saghyz can solve the problem with a constant deficit of natural rubber in the world. So his story is not over.
Currently in the U.S., Ford Motor Company and the University of Ohio are exploring the possibility of using alternative sources of rubber for the automotive industry. As producer of latex and considered Taraxacum kok-saghyz (TKS), known as the "Russian dandelion" (English Russian dandelion).