Plant density and weediness of clary sage crops depending on the effect of winter hardiness and years of use of the crop in the southern Ukraine

V.A. Ushkarenko, A.V. Shepel, S.V. Kokovikhin, V.A. Chaban
2020 Interagency thematic scientific collection «Irrigated agriculture»  
doi:10.32848/0135-2369.2020.73.22 fatcat:vrkt36xsrfdpboebyijs7zsad4