ABOUT EFFECT OF WEEDS ON SPECTRAL REFLECTANCE PROPERTIES OF WINTER WHEAT CANOPY ArticleSavin I.Y., Shishkonakova E.A., Prudnikova E.Y., Vindeker G.V., Grubina P.G., Sharychev D.V., Schepotiev V.N., Verniuk Y.I., Zhogolev A.V.AGRICULTURAL BIOLOGY. Vol. 55. 2020. P.. 53-65