Abstract
This is a third paper in a series on foliar nutrient concentrations for seedling crops ofEucalyptus grandis. It describes the relationship between foliar nutrient concentrations ofEucalyptus grandis and height growth rate as influenced by fertilizer application and liming in four comprehensive experiments. Tentative optimum levels for the foliar nutrient concentrations of N, P, K, Ca, Mg, S, Zn, Fe, Cu and Mn and some ratios of macro-nutrients are indicated for the growing conditions at these experimental sites as well as their practical value and limitations. In a pooled analysis, 71 per cent of the variation in height growth was explained by the levels and ratios of nutrients and the rate of N and P application. All elements determined except Cu occurred in this prediction equation. The foliar levels of N, P, K and Mn, the N/P ratio and P application appear to be the most important explaining variables.
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References
Beaufils ER (1973) Diagnosis and recommendation integrated system (DRIS). Soil Sci Bull 1, Univ Natal, Pietermaritzburg
Herbert MA (1983) The response ofEucalyptus grandis to fertilizing with nitrogen phosphorus, potassium and dolomitic lime on a Mispah soil series. S Afr For J (in press)
Herbert MA, Jackson DA and Verloren van Themaat R (1982) Final findings on the response ofEucalyptus grandis to fertilizing at De Kaap, Eastern Transvaal. S Afr For J 122, 53–58
Schönau APG (1977) Initial responses to fertilizingEucalyptus grandis at planting are sustained until harvesting. S Afr For J 100, 72–80
Schönau APG (1981) The effects of fertilizing on the foliar nutrient concentrations inEucalyptus grandis. Fertilizer Res 2, 73–87
Schönau APG (1981) Seasonal changes in foliar nutrient content ofE. grandis. IUFRO Symposium Brazil (1980). S Afr For J 119, 1–4
Schönau APG (1982) Additional effects of fertilizing on several foliar nutrient concentrations and ratios inEucalyptus grandis. Fertilizer Res 3, 385–397
Schönau APG and Herbert MA (1982) Relationship between growth rate and foliar concentrations of nitrogen, phosphorus and potassium forEucalyptus grandis. IUFRO XVII World Congress, Kyoto, Japan (1981). S Afr For J 120, 19–23
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Schönau, A., Herbert, M. Relationship between growth rate, fertilizing and foliar nutrient concentrations forEucalyptus grandis; preliminary investigations. Fertilizer Research 4, 369–380 (1983). https://doi.org/10.1007/BF01054010
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DOI: https://doi.org/10.1007/BF01054010