TY JOUR TI RATIONAL PARAMETER SUBSTANTIATION OF THE «EXTRA» SEED FLAT KICKER OF THE PNEUMATIC AND VACUUM SOWING DEVICE KW cultivated crops KW seed removal KW sowing device KW proportion element KW flat kicker KW seed pinching JO Bulletin of KSAU AU Yakovets, A.V. AU Nesmiyan, A.Y. PY 2012 IS PB Krasnoyarsk State Agrarian University