Uniformity trial of white pea beans

Usage

data("loesell.bean.uniformity")

Format

A data frame with 1890 observations on the following 3 variables.

row: row ordinate
col: column ordinate
yield: yield, grams per plot

Details

Trial conducted at Michigan Agricultural Experiment Station, 1.75 acres. Beans were planted in rows 28 inches apart on 15 Jun 1932. Plants spaced 1 to 2 inches apart. After planting, an area 210 ft x 210 feet. This area was divided into 21 columns, each 10 foot wide, and each containing90 rows.

Field length: 90 rows * 28 inches = 210 feet.

Field width: 21 series * 10 feet = 210 feet.

Author's conclusion: Increasing the size of the plot by increasing its length was more efficient than increasing its width.

Note, the missing values in this dataset are a result of the PDF scan omitting corners of the table.

Source

Loesell, Clarence (1936). Size of plot & number of replications necessary for varietal trials with white pea beans. PhD Thesis, Michigan State. Table 3, p. 9-10. https://d.lib.msu.edu/etd/5271

References

None

Examples

if (FALSE) { # \dontrun{
  require(agridat)
  data(loesell.bean.uniformity)
  dat <- loesell.bean.uniformity
  require(desplot)
  desplot(dat, yield ~ col*row,
          flip=TRUE, aspect=1, tick=TRUE,
          main="loesell.bean.uniformity")
} # }