TY CONF TI VALUE OF REPRODUCTION COEFFICIENT IN PRODUCTION OF SEEDS OF SPRING BARLEY VARIETIES KW seed multiplication coefficient KW barley varieties KW seeding rates KW seed production JO The state and problems of agricultural science in Yenisei Siberia AU Surina, E.A. AU Butkovskaya, L.K. PY 2024 PB Krasnoyarsk Scientific Research Institute of Agriculture is a separate division of the Federal Research Center KSC SB RAS