Abstract
Abstract Foliar element levels of one composite sample from each of 120 plots, representing a wide range of topographic conditions common in the summer rainfall area of South Africa, are given. Multiple regression and correlation analysis showed foliar Si and K levels were significantly related to tree growth. Fertilising with potassium and lime could give positive results in the highly leached soils of the study area. Problems associated with the interpretation of foliar analysis are discussed.
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