00635naa#a2200193#i#450# EN\\bibl\4064 20250117120210.5 2073-0462 20141214b2014####ek#y0engy0150####ca RUS RU Productivity of potato of sprint variety, depending on the nutrition background on gray forest steppe soil of Middle Volga Journal article Kazan Kazan state agrarian University 2014 5 с. Journal article local Gareev Ilgiz Vladimirov Vladimir Petrovich Vladimirov Konstantin Vladimirovich zh-szf.ru