agridat (version 1.27)

strickland.tomato.uniformity: Uniformity trial of tomato

Description

Uniformity trial of tomato in Australia

Usage

data("strickland.tomato.uniformity")

Format

A data frame with 180 observations on the following 3 variables.

row

row

col

column

yield

yield per plot, pounds

Details

Strikland (1934) says the trial was located at Bendigo, Victoria, during the years 1932-1933.

Tomato plants were placed 2 feet apart in rows 4 feet apart. Each plot contained 6 plants.

Field dimensions are not given, but the most likely design is:

Field length: 6 plots * 6 plants * 2 feet = 72 feet

Field width: 30 plots * 4 feet = 120 feet

References

A.G. Strickland (1934). Tomato Investigations: Results of Bendigo Tests. Journal of Agriculture, Victoria, 32, 335-346. https://archive.org/details/journaldepartmev32pvicte/page/334/

Examples

if (FALSE) {

library(agridat)
  data(strickland.tomato.uniformity)
  dat <- strickland.tomato.uniformity

  mean(dat$yield)
  sd(dat$yield)

  libs(desplot)
  desplot(dat, yield ~ col*row,
          main="strickland.tomato.uniformity",
          flip=TRUE, aspect=(6*12)/(30*4))
}