In the accompanying paper we described how the growth cycles of biennial and primocane fruiting raspberry cultivars are controlled by the environment, the genotype and cultural practices (Carew et al., 2000). For plants to fruit outside their normal season, these growth cycles need to be manipulated and optimized for fruit production at specific times of the year. Techniques to achieve this are discussed in this paper and areas are identified which are less well understood and in need of further investigation.
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