Paper presented at 19th IUFRO World Congress, August 1990, Montreal, Canada

Site Evaluation in Black Wattle with Special Reference to Soil Factors

Published in: South African Forestry Journal
Volume 156, issue 1, 1991 , pages: 35–43
DOI: 10.1080/00382167.1991.9629085
Author(s): A., P.G. SchönauSilviculture Section, Institute for Commercial Forestry Research, South Africa, W., J.K. AldworthSilviculture Section, Institute for Commercial Forestry Research, South Africa


Together with climate, soil characteristics are the most important factors affecting tree growth. However, the attempts in many site evaluation studies to establish a direct relationship between soil factors and tree growth have not been very successful, the exception being soil depth which has been shown to be of general significance, especially in studies over large regions. Only in detailed studies of limited areas has it been possible to show the important role of other soil characteristics. Grouping or stratification of data according to soil groups has in come cases been able to improve these relationships.

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