Fig. 2From: Biochar improves soil physical characteristics and strengthens root architecture in Muscadine grape (Vitis rotundifolia L.)Root traits from pot experiment obtained from WinRhizo software (WinRHIZO Pro, Instruments Regent, QC, Canada). Bars with the same letters indicate that the least square means are not significantly different (P ≤ 0.05), according to the Tukey–Kramer testBack to article page