Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Effects of Cane Emergence Time, Bending, and Defoliation on Flowering and Yield in Primocane-Fruiting Blackberry

Version 1 : Received: 16 September 2020 / Approved: 18 September 2020 / Online: 18 September 2020 (10:02:57 CEST)

How to cite: Takeda, F.; Rose, A.; Demchak, K. Effects of Cane Emergence Time, Bending, and Defoliation on Flowering and Yield in Primocane-Fruiting Blackberry. Preprints 2020, 2020090426 (doi: 10.20944/preprints202009.0426.v1). Takeda, F.; Rose, A.; Demchak, K. Effects of Cane Emergence Time, Bending, and Defoliation on Flowering and Yield in Primocane-Fruiting Blackberry. Preprints 2020, 2020090426 (doi: 10.20944/preprints202009.0426.v1).

Abstract

Primocane-fruiting (PF) blackberries are adaptable to different production systems. To increase yields in PF blackberries, their primocanes are typically tipped or topped in summer to encourage branch formation from axillary buds below the cut. In this study, we determined in PF ‘Prime-Ark Traveler’ whether early emerging primocanes were more productive than those that emerged later in the season and the effect of primocane bending and defoliation on flowering. The primocanes that emerged in April produced 64% more flower shoots than those that emerged after May. Also, these findings indicate the alternative primocane management practices of selecting the early emerging primocanes and bending to orient primocanes horizontally and leaf removal increase budbreak and flower shoot emergence. The present work contributes toward a better understanding of primocane emergence time and orientation-flowering relations and how they mediate crop performance in PF blackberry.

Subject Areas

Rubus; cultural practice; leaf removal; flowers; fruit; floricane; trellis; cane training; pruning; management strategy

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