title: Ecological Aspects of the Productivity of Nigella Varieties under the Conditions of the Middle Volga Region
abstract: The article presents a comprehensive assessment of the varieties of <i>Nigella sativa</i> and <i>Nigella damanscena</i> under the agro-climatic conditions of the forest-steppe zone of the Middle Volga region. The experimental work was carried out in 2019-2021 on the experimental field of FSBRI the Penza Research Institute of Agriculture. Climatic conditions during the years of study of Nigella were characterized as dry. The hydrothermal coefficient ranged from 0.67 in 2019 to 0.92 units in 2021.
journal: Russian Agricultural Sciences