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Home → Publications → Tree Planters' Notes → Tree Planters' Notes Volume 25, Number 1 (1974) → Undercutting depth may affect root-regeneration of Iodgepole pine seedlings

Undercutting depth may affect root-regeneration of Iodgepole pine seedlings

Toppling and taproot malformation of transplanted lodgepole pine has been observed in research and production plantations in British Columbia. Tree toppling is a term used to define instability in young stands; trees are not completely windthrown but lean at carious angles and continue to grow. lodgepole pine may form a basal sweep or sabre form which is apparently interrelated with toppling and windfall. Racal sweep and toppling tray he caused by the lack of development and growth of a dominant taproot after the primary taproot has been severed, such as in root pruning, undercuttings and lifting. The study discussed in this article may help determine the extent of pseudo taproot regeneration and show- the growth and development of the root system in relation to the common nursery practice of undercutting.


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Author(s): G. F. Dykstra

Publication: Tree Planters' Notes - Volume 25, Number 1 (1974)

Volume: 25

Number: 1