Induction of Lateral Branching in Nursery Pear and Apple Trees with Plant Growth Regulators
DOI:
https://doi.org/10.71318/apom.1996.50.3.151Abstract
The summer following budding the trees of ‘Honey Sweet’ and ‘Seckel’ pear on ‘OHF 97’ rootstock, and ‘Liberty’ and ‘Stayman Red’ apple on ‘M.7A,’ were sprayed once or twice with BA+GA 4+7or sprayed once with dikegulac. Dikegulac caused severe phytotoxicity, reduced tree height and induced narrow-angled feathers. Both pear cultivars produced branches when sprayed with BA+GA 4+7at 1500 ppm but only the cv. ‘Honey Sweet’ produced branches when treated at 750 ppm of BA+GA 4+7. Single and double BA+GA 4+7sprays significantly increased total number of feathers with both apple but double applications at 250 ppm were the most effective.
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