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Revista Brasileira de Ciência do Solo 2005, 29 2

Autor: Paulo Guilherme Salvador Wadt

Fuente: http://www.redalyc.org/


Introducción



Revista Brasileira de Ciência do Solo ISSN: 0100-0683 revista@sbcs.org.br Sociedade Brasileira de Ciência do Solo Brasil Wadt, Paulo Guilherme Salvador RELATIONSHIPS BETWEEN SOIL CLASS AND NUTRITIONAL STATUS OF COFFEE PLANTATIONS Revista Brasileira de Ciência do Solo, vol.
29, núm.
2, 2005, pp.
227-234 Sociedade Brasileira de Ciência do Solo Viçosa, Brasil Available in: http:--www.redalyc.org-articulo.oa?id=180214036008 How to cite Complete issue More information about this article Journals homepage in redalyc.org Scientific Information System Network of Scientific Journals from Latin America, the Caribbean, Spain and Portugal Non-profit academic project, developed under the open access initiative RELATIONSHIPS BETWEEN SOIL CLASS AND NUTRITIONAL STATUS OF COFFEE. 227 RELATIONSHIPS BETWEEN SOIL CLASS AND NUTRITIONAL STATUS OF COFFEE PLANTATIONS(1) Paulo Guilherme Salvador Wadt(2) SUMMARY Farm planning requires an assessment of the soil class.
Research suggest that the Diagnosis and Recommendation Integrated System (DRIS) has the capacity to evaluate the nutritional status of coffee plantations, regardless of environmental conditions.
Additionally, the use of DRIS could reduce the costs for farm planning.
This study evaluated the relationship between the soil class and nutritional status of coffee plants (Coffea canephora Pierre) using the Critical Level (CL) and DRIS methods, based on two multivariate statistical methods (discriminant and multidimensional scaling analyses).
During three consecutive years, yield and foliar concentration of nutrients (N, P, K, Ca, Mg, S, B, Zn, Mn, Fe and Cu) were obtained from coffee plantations cultivated in Espírito Santo state.
Discriminant analysis showed that the soil class was an important factor determining the nutritional status of the coffee plants.
The grouping separation by the CL method was not as effective as the DRIS one.
The bidimensional analysis of Euclidean distances did not show the same relations...





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