Abstract
Annual renewable resource potential of medicinal plant materials in the Republic of Belarus - Black alder leaves and Gray alder leaves - has been studied. It was found that average annual supply of black alder leaves for the last 6 years was 7845898,5 tons and gray alder leaves - 733257,5 tons. The stock of black alder leaves is almost 10 times as high as the stock of gray alder leaves. During storing black alder wood from 2015 to 2019, on the average 65,623,8 tons of dry leaves were unused by-product. Annually sylvulas of black alder are created in the forest fund of the Ministry of Forestry of the Republic of Belarus, for the period from 2015 to 2020 1828 hectares were created. 10,92 ± 0,27 tons of dry black alder leaves and 4,00 + 0,04 tons of dry gray alder leaves cab be stored annually on 1 hectare on the average on the territory of the Republic of Belarus. The percentage of the yield of air-dry raw materials for black alder leaves - 37% ± 1% and for gray alder leaves - 48% ± 2% is experimentally stated.
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