%0 Journal Article %T About the influence of solutions of fulvic acids from sapropel on lettuce plants in various types of its processing %A Udalova, O.R. %A Mirskaya, G.V. %A Kononchuk, P.Y. %A Panova, G.G. %K fulvic acid solutions, nutrient film technique, watercress, lettuce, seeds, soaking, non-root treatment, introduction to the root environment, growth, productivity, photosynthesis %J Agrarian Bulletin of the %D 2021 %N 209 %P 11 %I Ural State Agrarian University