W. T. Crow,
J. E. Luc,
R. McSorley, and
R. M. Giblin-Davis, Entomology and Nematology Department,
K. E. Kenworthy, Agronomy Department, and
J. K. Kruse, Environmental Horticulture Department, University of Florida, Gainesville 32611
Water-displacement and WinRHIZO root-scanning methods were compared for efficacy of root damage assessment. Results from both methods were similar and a highly significant relationship was found between the two methods in trial one (r2 = 0.9968, P < 0.0001) and trial two (r2 = 0.9988, P < 0.0001). Both protocols provide consistent root volume measurements; however, water displacement is preferred as an economical method if a quick evaluation of a large amount of roots is essential. For a more detailed root morphological and architectural analysis, WinRHIZO root scanning provides additional information about several root parameters that cannot be measured by simple water displacement.