The productivity and carbohydrate economy of a developing stand of Rubus idaeus

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Abstract
The dry matter production and resource allocation patterns of a series of 1- to 5-yr-old stands of R. idaeus are described. Stand development proceeds along a predictable pattern of development from the building to the self-thinning phases. The building phase is characterized by an active period of vegetative propagation, insuring almost full occupancy of the site at the end of the 2nd to 3rd yr. Possibly, the shift from clonal growth to fruit production in the self-thinning phase represents an adaptive response to a deteriorating environment. Competition for the available assimilates between the 1st-yr cane, the primocane, and the 2nd-yr cane, the floricane, is minimized by the temporal and spatial separation of their activities.

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