Variations within the Lismore soil and influence on Pinus radiata growth

Abstract

The study concentrated mainly on the field and laboratory analysis of some soil physical characteristics generally considered to be the most significant soil-plant growth factors relevant to the problems in establishment of forest plantations in the dry climate and relatively shallow soils (classifies as Lismore soils) on the Canterbury Plains of New Zealand. From tree volume assessments made during a reconnaissance survey of available plantation of similar age class, distinct variations in growth were observed on the Lismore soil series over an area with minimal climatic variations. Correlation analysis between tree stem/root growth and soil physical characteristics such as soil depth, bulk density, particle size distribution (stoniness etc.) and moisture holding characteristics were carried out.