Fig. 3 Root to total biomass ratios for DM yield and N accumulation, leaf weight ratio (LWR), and leaf N accumulation ratio of timothy populations selected for high (N+) and low (N-) forage N concentration and of a check (`Champ') grown under limiting to nonlimiting N rates in the second regrowth cycle (Phase 2). In the first regrowth cycle (Phase 1), data were obtained under one N rate. Standard errors of the mean are presented as vertical bars

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