agridat (version 1.23)

loesell.bean.uniformity: Uniformity trial of white pea beans

Description

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.

References

None

Examples

if (FALSE) {
  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")
}