Tree root improvements by the nursery industry

"For successfully transplanting to and establishment in the landscape it is essential that trees have a well developed root system. Many nursery practices, including field harvesting that leaves the bulk of a trees roots behind in the nursery soil, and container production that often results in contorted and circling roots, seem counterproductive to successful establishment. New nursery production systems, including pot-in-pot, improved in-ground root control bags, and copper treatment of containers and fabric bags, as well as new production products such as herbicide impregnated bags, the in-ground Cellugro unit, and the double container AGS (Above Ground System), are improving the quality and quantity of roots on nursery grown trees. In addition, new holding techniques currently being tested for field dug (B&B) stock, such as stretch and shrink wrapping and inoculation with mycorrhizae, may help to prevent root system degradation during the transition time from the nursery to help landscape." [Abstract]

[San Francisco, Mar. 5-6, 1998]

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