Stimulating Root Regeneration of Landscape-Size Red Oak With Auxin Root Sprays    (View PDF)

Glen P. Lumis

Abstract: Sprays of 3000 ppm indole-3-butyric acid (IBA) and napthaleneacetic acid (NAA), applied to freshly cut roots of 250-300 cm tall red oaks (Quercus rubra L) dug by tree spade, increased the number of roots regenerated from medium (5-1 5 mm) and large (15-25 mm) diameter roots. IBA stimulated more new roots than NAA on large roots only. As root diameter increased there was a trend to more regenerated roots. The root spray method may be more practical than others recommended and may be commercially feasible.

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https://doi.org/10.48044/jauf.1982.074