ISHS Acta Horticulturae 262: V International Symposium on Rubus & Ribes
IDENTIFYING AN APPROPRIATE PRUNING SYSTEM FOR 'ROYALTY' PURPLE RASPBERRY |
| Authors: | N. Gundersheim, M. Pritts |
| Abstract:
A 4-factor completely randomized design was used to assess the effects and interactions of primocane tipping, cane or branch length, cane density and the time of cane thinning on yield, yield components, and their distribution in ‘Royalty’ raspberry. Cane density and cane or branch length were positively associated with yield, although fruit size decreased with increasing length. The total number of buds and the percent fruiting buds within the inner plant canopy also decreased with increasing branch length, and the longest canes or branches were more susceptible to winter injury. Pinching primocanes increased branching and the total number of buds per plant, especially at low cane densities, but treated plots were difficult to harvest, and also became infected with cane blight at the pinching wound. Summer-thinning had no positive effect on plant performance. Path analysis revealed that bud number per cane and cane number per hill were the two most important factors to positively influence yield. | |
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