TY JOUR TI FORMATION THE PRODUCTIVITY OF PEA VARIETIES WITH THE DEFORMATION OF LIGNIN IN LEGUME’S VALVE DEPENDING ON CROPS DENSITY KW pea KW seeding rate KW sowing density KW survival rate KW safety KW productivity KW multiplication factor JO Vestnik of Kazan State Agrarian University AU Fadeeva, A.N. AU Shurhaeva, K.D. PY 2019 IS 14 PB Kazan state agrarian University