TY JOUR TI IMPACT OF ENVIRONMENTAL FACTORS ON THE FORMATION OF QUALITATIVE CHARACTERISTICS OF SEEDS OF SPRING BARLEY VARIETIES IN THE PREDKAMSK ZONE REPUBLIC OF TATARSTAN KW agroecological conditions KW spring barley KW seeds KW variety KW bulk density (nature) KW germination KW weight of 1000 seeds JO Agrobiotechnologies and digital farming AU Afanasyeva, D.S. AU Kadyrova, F.Z. PY 2023 IS 2 PB Kazan state agrarian University