NAA Reduces Vegetative Shoot Growth on Rootstocks of Ornamental Peach
Vegetative bud growth was controlled on dormant peach rootstock of budded Prunus persica (L.) Batsch. ‘Bon Fire’ with naphthaleneacetic acid (NAA) applied as a trunk paint. Vegetative bud growth was suppressed with all test concentrations (2,875 to 11,500 ppm) through 210 days after treatment (DAT), although scion bud mortality of ‘Bon Fire’ was greater with concentrations above 8,625 ppm. Naphthaleneacetic acid applied at 5,750 ppm provided excellent vegetative bud control, vigorous scion bud growth, and minimal scion bud mortality.Abstract
Contributor Notes
Appreciation is expressed to ProGro Nursery, McMinnville, TN, for providing a field location to conduct the experiments; and to John Schneider, University of Tennessee, Knoxville, TN, and Matt Kramer, USDA-ARS, Beltsville, MD, for their statistical support.
2Research Horticulturist.
3Professor of Horticulture, Auburn University, 101 Funchess Hall, Auburn University, AL 36849.
4Area Nursery Specialist, University of Tennessee Extension Service, 325 Locust Street, McMinnville, TN.