Uniformity trial of potato

Description

Uniformity trial of potato grown in Portugal

Usage

data("oliveira.potato.uniformity")

Format

A data frame with 200 observations on the following 3 variables.

row

row ordinate

col

column ordinate

yield

yield per plot, decagrams

Details

This uniformity trial was conducted in 1945-1946 at the National Agronomic Station (Sacavém) using a variety of potato known as "Batata Duas- Vezes".

Plot yields are expressed in decagrams.

Field length: 40 rows x 0.50 m = 20 m

Field width: 5 columns x 5 m = 25 m

See pages 329-333 for details.

Translation from Google.

Transcription details: OCR on Chart B in the original pdf. Checked by K.Wright.

Source

de Oliveira, Augusto (1946). Estudos de estatistica agronomica III Eficiencia relativa dos diversos delineamentos estatisticos usados na comparacao de grande numero de variedades. Agronomia Lusitana, 8, 315-340. https://archive.org/details/agronomia-lusitana_1946_8_4/page/314/

References

None

Examples

## Not run: 
library(agridat)
data(oliveira.potato.uniformity)
dat <- oliveira.potato.uniformity

library(desplot)
desplot(dat, yield ~ col*row,
        flip=TRUE, aspect=20/25, tick=TRUE,
        main="oliveira.potato.uniformity")

## End(Not run)