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.

Source

Todd C. Wehner. (1984). Variation for Yield within Locations in Homogeneous and Heterogeneous Cucumber Populations Cucurbit Genetics Cooperative Report, 7, 33-34. https://cucurbit.info/1984/07/variation-for-yield-within-locations-in-homogeneous-and-heterogeneous-cucumber-populations/

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) { # \dontrun{
  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")

} # }