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Print version ISSN 0006-8705

Bragantia vol.11 no.1-3 Campinas Mar. 1951 

Analise estatística do ensaio de variedades de café : parte II



A. Morales

Assistente da Cadeira de Estatística Matemática e Demográfica, Faculdade de Ciências Econômicas e Administrativas da Universidade de São Paulo




This paper continues the statistical analysis of a coffee varietal trial at Campinas (1, 2, 3), utilising the data of a further period of 4 years.
Variety D (Yellow Bourbon) has now drawn significantly ahead of C (Bourbon) as is shown by fig. 1 compared with fig. 2b of reference (3). This possibility was foreseen at the time of the earlier analysis (3), from a consideration of the annual rates of increase of yield. This is of interest to the general problem of selection of perennial plants, because it shows that not only average yield but also rate of increase of yield is a useful criterion for selection.



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1.  Mendes, J. E. T. Ensaio de variedades de cafeeiros II. Bragantia 9: 1-101. 1949.         [ Links ]

2.  Mendes, J. E. T. Ensaio de variedades de cafeeiros III. Bragantia 11: 29-43, fig. 1. 1951.         [ Links ]

3.  Stevens, W. L. Análise estatística do ensaio de variedades de café. Bragatina : 9: 103-123. 1949.         [ Links ]

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