agridat (version 1.25)

oliveira.potato.uniformity: 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.

References

None

Examples

if (FALSE) {
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")
}