Changes in some root mass growth parameters of legume components in mixtures were studied in a pot trial in the Institute of Forage Crops, Pleven, Bulgaria (2011–2012). The following treatments were studied: Birdsfoot trefoil (100%); Sainfoin (100%); Subclover (100%); Tall fescue (100%); Birdsfoot trefoil + Tall fescue (50:50); Sainfoin + Tall fescue (50:50); Subclover + Tall fescue (50:50); Birdsfoot trefoil + Subclover + Tall fescue (33:33:33); Sainfoin + Subclover + Tall fescue (33:33:33). It was found that the root mass of legumes in the mixtures showed better development as compared with pure crops. The above-ground/root mass length in the two-component mixtures of Birdsfoot trefoil (1.469) and Sainfoin (1.992) was higher as compared with pure Birdsfoot trefoil (1.314) and Sainfoin (1.880).
Some root mass growth variables of legume components in mixtures