TY JOUR TI INFLUENCE OF VARIETY, SELF-POLLINATION AND CROSS-POLLINATION ON SEED YIELD COMPONENTS IN BIRD’S-FOOT TREFOIL KW bird’s-foot trefoil KW seed yield components KW variety KW cross-pollination KW self-pollination KW self-compatibility JO Adaptive Fodder Production AU Rekashus, E.S. PY 2020 IS 2020 PB Federal Williams Research Center of Forage Production and Agroecology