Dynamics of aerial and perennial biomass of two lucerne cultivars with different fall dormancy subject to two severities of cutting during the establishment phase

The aim of this study was to quantify the impact two cutting severities on dynamics aerial and perennial (root plus crown) biomass lucerne (Medicago sativa L.) plants cultivars contrasting fall dormancy rating during establishment phase. We worked at Unidad Integrada Balcarce with (non-winter dormant: FD10; semi-winter FD6) (40 100 mm) defining four treatments (FD6-40 mm, FD6-100 FD10-40 mm FD10-100 under a completely randomized design. In both cultivars, increasing severity produced reduction in leaf area number nodes residual, resulting reduced production regrowth, given shoot number. On other hand, effect increased only observed FD10 cultivar. This cultivar showed less when cut 40 than while no differences were between heights FD6