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.

Source

Borden, R. J. (1930) Replications of plot treatments in field experiments. Hawaiian Planters' Record, 34, 151-155. https://archive.org/details/hawaiian-planters-record_1930-04_34_2/page/150/

Borden, R.J. (1931). Studies in experimental technique–shape, size, and replication. Hawaiian Planters' Record, 35, 295-304. https://archive.org/details/hawaiian-planters-record_1931-07_35_3/page/n93

References

None

Examples

if (FALSE) { # \dontrun{
  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")
} # }