%0 Journal Article %T INFLUENCE OF POLLUTION OF GRAY FOREST SOIL BY OIL ON SPRING BARLEY PRODUCTIVITY AND COEFFICIENTS OF USE OF NUTRIENT SUBSTANCES FROM SOIL %A Osipova, R.A. %A Gilyazov, M.. %A Galavetdinov, S.M. %K oil, gray forest soil, prescription of pollution, spring barley, productivity, utilization of nutrients from the soil %J Vestnik of Kazan State Agrarian University %D 2020 %N 14 %P 6 %I Kazan state agrarian University