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New Zealand Journal of Forestry (1985) 30(2): 209–217
©New Zealand Institute of Forestry

Research article
The influence of seedling density on 0/1 Eucalyptus regnans seedling characteristics and their subsequent growth (FRI nursery - Rangiora).

J. M. Balneaves , B. J. Fredric , D. M. Hills and M. A. Bryant

Eucalyptus regnans seedlings were raised at five spacings in the Forest Research Institute nursery at Rangiora to determine the influence of spacing on seedling characteristics and their subsequent growth after planting out.
Growing space available to each seedling in the nursery production phase had a highly significant (P < 0.001) effect on seedling size and root mass. Seedling size increased when spacings increased from 10 X 10 cm to 15 X 20 cm/tree but decreased when growing space was further increased to 20 X 20 cm. The initial growing space not only influenced seedling dimensions but larger seedlings maintained their advantage [after planting out. The best results, combining both size and survival, were from seedlings raised at 15 X 15 cm in the nursery.

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