TY JOUR TI Energy and protein nutritional value of perennial forage crops grown on reclaimed lands of the Non-black earth region KW perennial grasses KW Galega orientalis Lam. KW Silphium perfoliatum L. KW red clover KW timothy grass KW productivity KW hay KW nutritional value KW palatability KW digestibility KW goats JO Adaptive Fodder Production AU Kapsamun, A.D. AU Pavlyuchik, E.N. AU Ivanova, N.N. AU Panova, N.V. PY 2026 IS 2026 PB Federal Williams Research Center of Forage Production and Agroecology