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Root Morphology and Its Relationship with Nitrate Uptake in Kentucky Bluegrass

Dep. of Plant Sciences, Univ. of Rhode Island, Kingston, RI 02881 USA

View larger version (14K): [in a new window]   Fig. 1 Relationship between rhizome dry weight and NUR in Kentucky bluegrass. Data of six cultivars and four replications of each

View larger version (20K): [in a new window]   Fig. 2 Relationship between fibrous root length in each diameter class and NUR of Kentucky bluegrass. A: very fine roots, diameter <0.064 mm; B: fine roots, diameter <0.064 to <0.2 mm; C: medium roots, diameter 0.2 to <0.5 mm; D: large roots, diameter 0.5 to <1.0 mm; E: very large roots, diameter 1.0 mm