Uniformity trial of groundnut

Uniformity trial of groundnut.

Usage

data("ducker.groundnut.uniformity")

Format

A data frame with 215 observations on the following 3 variables.

row

row ordinate

col

column ordinate

yield

yield, pounds per plot

Details

The experiment was grown in Nyasaland, Cotton Experiment Station, Domira Bay, 1942-43. There were 44x5 identical plots, each 1/220 acre in area. Single ridge plots each one chain in length, and one yard apart. Two rows of groundnuts are planted per ridge, staggered at 1 foot between holes. Holes are spaced 18 inches x 12 inches. Two seeds are planted per hole.

The yield values are pounds of nuts in shell.

Field length: 5 plots, 22 yards each = 110 yards.

Field width: 44 plots, 1 yard each = 44 yards.

This data was made available with special help from the staff at Rothamsted Research Library.

Data typed by K.Wright and checked by hand.

Source

Rothamsted Research Library, Box STATS17 WG Cochran, Folder 2.

References

None

Examples

if (FALSE) { # \dontrun{
  library(agridat)
  data(ducker.groundnut.uniformity)
  dat <- ducker.groundnut.uniformity
  libs(desplot)
  desplot(dat, yield ~ col*row,
          flip=TRUE, aspect=110/44,
          main="ducker.groundnut.uniformity")
} # }