TY JOUR TI THE INFLUENCE OF THE BIOLOGICAL PREPARATION "RIBAV-EXTRA" ON CUCUMBER SEED SOWING QUALITIES KW cucumber KW preparation «Ribav-extra» KW seed sowing qualities KW bio-stimulator KW length of sprouts and roots KW biometric indices JO Bulletin of KSAU AU Kiriyenko, N.N. AU Korotchenko, I.S. PY 2013 IS PB Krasnoyarsk State Agrarian University