ЕFFECT OF BIOSTIMULANTS FOLIAR APPLICATION ON FORAGE YIELD IN ALFALFA (Medicago sativa L.)

The present study was aimed to determine the effect of V2, VR10 and VR1 experimental biostimulants application on yield related main traits (plant height stems number per m2) forage productivity Prista 4 alfalfa variety. carried out in Experimental field at Institute Agriculture Seed Science "Obraztsov chiflik" - Ruse, from 2019 2021. were foliarly applied two times each regrowth. There found positive growth development alfalfa. additional introducing contributed higher grass stands by 17.13 14.36%, respectively compared control. Foliar spraying with V2 biostimulant had more clear pronounced stem development. According three-year results average m2 treatment significant exceeded control 4.78%. distinguished a stronger among studied products. Its resulted increases green mass dry matter yields 3.72 4.96%, over gives promising reason be recommended as corrective component technology growing for forage.