Articles
SCHEDULING SUMMER-BEARING RED RASPBERRIES IN GREENHOUSES IN ONTARIO
Article number
585_90
Pages
561 – 565
Language
English
Abstract
From 1994 -1998 we were able to schedule potted Titan red raspberry to produce fruit in a greenhouse from April through June.
In 1997, Nova and Titan were vernalized at 7°C or 3°C for 6 or 8 weeks, every two weeks from 12 Sept. – 28 Oct.
In Nova, lateral branches developed normally after 6 weeks at 7°C but Titan had not completely broken dormancy after 8 weeks at 3°C. In 1999, Nova and Tulameen, were vernalized at 7°C for 4, 5, 6, 7 or 8 weeks on 25 Aug. or 22 Sept. or vernalized in the field for the same periods of time.
Both cultivars had broken dormancy after 5 weeks of 7°C. However, in the 22 Aug. treatment, laterals developed that had not initiated flowers.
These results indicate that it is possible to manipulate summer-fruiting raspberries to crop plants sequentially from early January to late June, but that the timing of flower initiation is crucial for the plants to produce sufficient fruit.
In 1997, Nova and Titan were vernalized at 7°C or 3°C for 6 or 8 weeks, every two weeks from 12 Sept. – 28 Oct.
In Nova, lateral branches developed normally after 6 weeks at 7°C but Titan had not completely broken dormancy after 8 weeks at 3°C. In 1999, Nova and Tulameen, were vernalized at 7°C for 4, 5, 6, 7 or 8 weeks on 25 Aug. or 22 Sept. or vernalized in the field for the same periods of time.
Both cultivars had broken dormancy after 5 weeks of 7°C. However, in the 22 Aug. treatment, laterals developed that had not initiated flowers.
These results indicate that it is possible to manipulate summer-fruiting raspberries to crop plants sequentially from early January to late June, but that the timing of flower initiation is crucial for the plants to produce sufficient fruit.
Publication
Authors
A. Dale, A. Gilley, E. Kent
Keywords
Rubus idaeus, dormancy, flower bud initiation
Online Articles (115)