agridat (version 1.25)

jegorow.oats.uniformity: Uniformity trial of oats in Russia

Description

Uniformity trial of oats in Russia

Usage

data("jegorow.oats.uniformity")

Format

A data frame with 240 observations on the following 3 variables.

row

row ordinate

col

column ordinate

yield

yield per plot, kg

Details

At the Sumskaya (Ssumy?) agricultural experimental station (Kharkov Governorate), a field was planted in April 1908 and harvested that summer as plots 1 sazhen sqauare. A 'sazhen' is 7 feet.

Field width: 8 plots * 1 sazhen

Field length: 30 plots * 1 sazhen

Transcription details: Data typed by K.Wright from Roemer (1920), table 10.

References

Neyman, J., & Iwaszkiewicz, K. (1935). Statistical problems in agricultural experimentation. Supplement to the Journal of the Royal Statistical Society, 2(2), 107-180.

Roemer, T. (1920). Der Feldversuch. Arbeiten der Deutschen Landwirtschafts-Gesellschaft, 302. https://www.google.com/books/edition/Arbeiten_der_Deutschen_Landwirtschafts_G/7zBSAQAAMAAJ

Examples

if (FALSE) {
  library(agridat)
  
  data(jegorow.oats.uniformity)
  dat <- jegorow.oats.uniformity
  
  mean(dat$yield) # Jegorow reports 2.03

  libs(desplot)
  desplot(dat, yield~col*row, 
          aspect=10/24, flip=TRUE, tick=TRUE,
          main="jegorow.oats.uniformity")
}