Root development and whole-tree allometry of juvenile trees of five seed lots of Pinus radiata D.Don : implications for forest establishment on erosion-prone terrain, East Coast region, North Island, New Zealand

Investigates whether planting densities of Pinus radiata D.Don, the predominant species used for erosion control on erosion-prone pastoral hill country, can be reduced if faster growing P. radiata seedlings and cuttings from genetically improved seed lots are used. Reports the outcome of field trials in the East Coast region. Aims specifically to provide field-based, root-related data and allometric relationships for each of five different seed lots of P. radiata as inputs for slope stability and/or soil reinforcement modelling; establish whether or not there were significant differences in the growth rate among seedlings and cuttings grown from seed lots available at the time of early forest establishment in this region (1960s onwards), and planting stock (both seedlings and cuttings) grown from genetically improved seed lots available in more recent times; and to evaluate whether or not there is sufficient evidence in support of amending the current planting density recommendations for erosion-prone hill country likely to be afforested in the future. Source: National Library of New Zealand Te Puna Matauranga o Aotearoa, licensed by the Department of Internal Affairs for re-use under the Creative Commons Attribution 3.0 New Zealand Licence.