Fig 4. Hierarchical cluster analysis with standardized data of Si, C, N, and P concentrations; C: N, C: P, and N: P ratios; use efficiencies of C (CUE), N (NUE), P (PUE) and dry matter production (DM) for two sugarcane pre-sprouted seedling cultivars (CTC 4 and RB 966928) under three forms of Si supply (Si via nutrient solution [SiR], Si via foliar spraying [SiL], and Si absence [-Si]).
