00654naa#a2200169#i#450# EN\URAL'SKIY GOSUDARSTVENNYY AGRARNYY UNIVERSITET\bibl\42593 20240505082907.7 1997-4868 20210313b2021####ek#y0engy0150####ca RU Influence of sowing dates and methods of weed control on the growth, development and productivity of sunflower in direct seeding technology Journal article Ekaterinburg Ural State Agrarian University 2021 8 с. Journal article local Dridiger Viktor Korneevich Gorshkova Natal'ya Aleksandrovna usau.editorum.ru