Experience of growing medicinal marigold on frozen soils of Yakutia
In the conditions of the cryolitozone, studies were conducted to study the methods of growing medicinal calendula. Experience data on permafrost floodplain soils of Yakutia showed the possibility of obtaining a crop of medicinal calendula inflorescences ( up to 1.5 C/ha of dry inflorescences) during early summer sowing (in early June) with a narrow-row method of sowing 10 cm.