Root development of radiata pine in the gravel soils of Eyrewell Forest, Canterbury

Authors: M.K. Potter, K.M. Lamb
Publication: New Zealand Journal of Forestry, Volume N.Z.J.For. 1974, Issue N.Z.J.For. 19(2) 1974, pp 264-275, Aug 1974
Publisher: New Zealand Institute of Forestry

Abstract: Because of the importance oj tree stability against strong north-west winds at Eyrewell Forest, Canterbury, a study was carried out to assess comparative root development of twoto four-year-old Pinus radiata trees grown from natural regeneration, direct seeding, hand-planted nursery stock, and machine-planted nursery stock. Ground ripping was carried out before sowing and planting because the compacted nature of the gravel soils was thought to inhibit root development. Analysis of root growth showed root alignment along the ripped lines. This alignment was most pronounced in the machine-planted trees and less pronounced in those hand planted and those grown from direct seeding.