agridat (version 1.27)

borden.sugarcane.uniformity: Uniformity trial of sugarcane in Hawaii

Description

Uniformity trial of sugarcane in Hawaii

Usage

data("borden.sugarcane.uniformity")

Format

A data frame with 48 observations on the following 4 variables.

row

row ordinate

col

column ordinate

year

year, 1929 or 1931

yield

yield, tons per acre

Details

Harvested at Hakalau Plantation, Hawaii.

1929 data reported in Borden (1930). Plots are 30 ft x 75 ft. Plots 75 feet wide by 30 feet long.

We observe extreme soil variation in our cane fields.

Field width: 4 plots * 75 ft = 300 ft

Field length: 12 plots * 30 ft = 360 ft

1931 data are reported in Borden (1931). Map given. Plots are 35 ft x 62 ft. Col 1, row 10 was missing. Estimated as the average of neighboring plots. Col 4, row 3 was 102. Replaced with average of neighboring plots.

Field width: 4 plots * 62 feet = 248 feet (plus alleys on map)

Field length: 12 plots * 35 ft = 420 feet

Data provenance: From tables in original papers, transcribed by K.Wright.

References

None

Examples

if (FALSE) {
  library(agridat)
  data(borden.sugarcane.uniformity)
  dat <- borden.sugarcane.uniformity

  libs(desplot)
  desplot(dat, yield ~ col*row|year,
          aspect=(400)/(300), # rough average size of 2 years
          tick=TRUE, flip=TRUE,
          main="borden.sugarcane.uniformity")
}