Fig. 4From: Installation and imaging of thousands of minirhizotrons to phenotype root systems of field-grown plantsTotal root length density (RLD; cm cm-3) of maize at depths of 5–90 cm on mutliple days of year (DOY). Data was collected using the methods of Gray et al. [18], including manual analysis of all images. Data shown are lsmeans ± standard errors.Back to article page