Stub Length and Stub Angle Did Not Influence Renewal Shoot Number or Branch Angle of Tall Spindle ‘Gala’/Malling 9 Apple Trees

Renewal of limbs by pruning to leave a short, angled, upward-facing stub is common practice for spindle-type apple (Malus ×domestica) training systems. A short, beveled stub cut is thought to stimulate renewal growth from latent buds present underneath the base of the excised branch, and to stimulate smaller, more fruitful renewal limbs with wide crotch angles. We conducted trials over the course of 2 years that involved dormant pruning of ‘Buckeye Gala’ with renewal cuts to compare two stub lengths, 0.5 and 2 cm, and three stub orientations, upward facing, downward facing, and vertical facing... Mehr ...

Verfasser: James R. Schupp
H. Edwin Winzeler
Melanie A. Schupp
Dokumenttyp: Artikel
Erscheinungsdatum: 2019
Reihe/Periodikum: HortTechnology, Vol 29, Iss 1, Pp 46-49 (2019)
Verlag/Hrsg.: American Society for Horticultural Science (ASHS)
Schlagwörter: dormant pruning / dutch cut / m.9 / pruning automation / renewal growth / Plant culture / SB1-1110
Sprache: Englisch
Permalink: https://search.fid-benelux.de/Record/base-27019026
Datenquelle: BASE; Originalkatalog
Powered By: BASE
Link(s) : https://doi.org/10.21273/HORTTECH04218-18

Renewal of limbs by pruning to leave a short, angled, upward-facing stub is common practice for spindle-type apple (Malus ×domestica) training systems. A short, beveled stub cut is thought to stimulate renewal growth from latent buds present underneath the base of the excised branch, and to stimulate smaller, more fruitful renewal limbs with wide crotch angles. We conducted trials over the course of 2 years that involved dormant pruning of ‘Buckeye Gala’ with renewal cuts to compare two stub lengths, 0.5 and 2 cm, and three stub orientations, upward facing, downward facing, and vertical facing, to determine the effects on renewal shoot number, position, angle, and length. We found no clear advantages with either stub length that we evaluated, and there was no improvement in renewal shoot quality with a bevel cut at any orientation. Stub length and stub angle did not influence limb renewal and may be unimportant for training orchard-pruning crews and for machine-learning and robotic pruning.