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Provedor de dados:  Repositório Alice
País:  Brazil
Título:  Relationships between soil class and nutritional status of coffee plantations.
Autores:  WADT, P. G. S.
Data:  2007-06-01
Ano:  2005
Palavras-chave:  Coffee
Café Conilon
Classes de solos
Método DRIS
DRIS Method
Método do Nível Crítico
Level Critical Method
Planejamento agrícola
Café
Coffea canephora
Estado nutricional
Classificação do solo
Análise estatística
Análise multivariada
Plant nutrition
Nutritional status
Soil classification
Statistical analysis
Multivariate analysis
Nutrición de las plantas
Estatus nutricional
Clasificación de suelos
Análisis estadístico
Análisis de multivarianza
Resumo:  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 relationship between plant nutritional status and soil class. Multidimensional scaling analysis by the CL method indicated that 93.3 % of the crops grouped into one cluster, whereas the DRIS method split the fields more evenly into three clusters. The DRIS method thus proved to be more consistent than the CL method for grouping coffee plantations by soil class.

2005
Tipo:  Artigo em periódico indexado (ALICE)
Idioma:  Inglês
Identificador:  0100-0683 (impresso)

15200

http://www.alice.cnptia.embrapa.br/handle/doc/506306

http://ainfo.cnptia.embrapa.br/digital/bitstream/item/112611/1/15200.pdf

10.1590/S0100-06832005000200008.
Editor:  Revista Brasileira de Ciência do Solo, Viçosa, MG, v. 29, n. 2, p. 227-234, maio/abr. 2005.
Relação:  Embrapa Acre - Artigo em periódico indexado (ALICE)
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