Volume Displacement Provides a Quick and Accurate Way to Quantify New Root Productin
Root growth potential (RGP) measurement can be time-consuming and tedious, especially when seedlings have fibrous root systems. A volume-displacement technique involving suspending seedling roots and shoots in a clear plastic tube allows rapid estimation of the volume of plant parts while minimizing gravimetric errors. The technique was tested in three experiments examining (1) the repeatability of the technique, (2) its usefulness in estimating RGP, and (3) the relationship of volume displacement to tissue dry weight. Results indicate that this technique provides a quick, reproducible measure of seedling size while allowing a rapid (2-seedlings-per-minute) assay of RGP in container-grown stock. Tree Planters' Notes 45(3): 121-124; 1994
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Author(s): John T. Harrington, John G. Mexal, James T. Fisher
Publication: Tree Planters' Notes - Volumes 45, Number 4 (1994)
Section: Technical Tips
Volume: 45
Number: 4
