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| Natura: | Artículo científico |
| Lingua: | en |
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Universidade Federal de Viçosa
2004
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| Accesso online: | https://www.redalyc.org/articulo.oa?id=48828103 |
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Sommario:
- Nutritional status of eucalyptus grandis clones evaluated by critical level and dris methods Paulo Guilherme Wadt Salvador Agrociencias calcium eucalyptus nutrient composition Multivariate analysis Nutritional status of eight 1.0 and 4.7 years old clones of Eucalyptus grandis, cultivated in amedium textured Ustults - US - and a Quartzipsamments - PS - soils, in Lençóis Paulista, São Paulo, were evaluatedby the Diagnosis and Recommendation Integrated System (DRIS) and Critical Level (CL) methods. Based onmultivariate discriminant analysis, the DRIS indices described the nutritional status of trees better in relation totree age and soil type than in relation to nutrient composition. Spearmans correlation coefficients showed statisticallysignificant relationships between volumetric tree growth and nutrients when applying DRIS indices or foliarnutrient concentrations. However, the DRIS indices indicated a lower number of trees with nutritional deficiencies,in relation to the CL method. According to the CL method, P, S, and Ca were deficient in the majority of the soilsand tree age categories. By the DRIS method, Ca was the only deficient nutrient in PS soils, and appeared to beparticularly limited in one-year-old trees. In conclusion, the DRIS method was more efficient than the CL methodin evaluating the nutritional status of eucalyptus trees. 2004 artículo científico 0100-6762 https://www.redalyc.org/articulo.oa?id=48828103 en http://www.redalyc.org/revista.oa?id=488 Revista Árvore application/pdf Universidade Federal de Viçosa Revista Árvore (Brasil) Num.1 Vol.28