agridat (version 1.26)

wehner.cucumber.uniformity: Uniformity trial of cucumber in North Carolina

Description

Uniformity trial of cucumber in North Carolina

Usage

data("wehner.cucumber.uniformity")

Format

A data frame with 150 observations on the following 3 variables.

row

row ordinate

col

column ordinate

yield

yield per plot in number of fruit

Details

A uniformity trial was planted in July 1982 near Clinton, North Carolina. Harvested September when 10 Yield data were considered missing in plots where the plant stand was at all questionable.

Seeds for the pickling variety 'Calypso' were planted on raised beds in rows 1.5 m apart. Each row was 25 plots 1.5 m long.

References

William H. Swallow and todd C. Wehner (1986). Optimum plot size determination and its application to cucumber yield trials. Euphytica, 35, 421-432.

Examples

if (FALSE) {
  libs(agridat)
  data(wehner.cucumber.uniformity)
  dat <- wehner.cucumber.uniformity

  require(desplot)
  desplot(dat, yield ~ col*row,
          flip=TRUE, tick=TRUE, aspect=(25 * 1.5)/(22 * 1.5),
        main="wehner.cucumber.uniformity")

}