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Root class-specific growth dynamics of excavated root systems. Cassava root systems were excavated and analyzed over a time span of 8 weeks. Each week, the results for 3 root systems were used to compute a dispersion statistics, which shows the decline or increase of particular root diameter classes (class 1: <2 mm, class 2: 2-6 mm, class 3: 6-20 mm, and class 4: >20 mm) in the course of time.
