agridat (version 1.27)

hernandezdavila.potato.uniformity: Uniformity trial of potato in Guatemala

Description

Uniformity trial of potato in Guatemala

Usage

data("hernandezdavila.potato.uniformity")

Format

A data frame with 1008 observations on the following 4 variables.

row

row ordinate

col

column ordinate

yield

yield, kg per plot

expt

experiment

Details

Lat 14 deg 37 min 58 sec, Long 90 deg 48 min 10 sec.

Expt 1 is for potato genotype "Loman". Page 45. Expt 2 is for potato genotype "Atzimba". Page 46.

Both experimental fields are the same size.

Field width: 12 plots * 0.9m = 10.8 m

Field length: 42 plots * 0.9m = 37.8 m

Data was OCR converted to csv. Page 45=46.

References

None

Examples

if (FALSE) {
  library(agridat)
  data(hernandezdavila.potato.uniformity)
  dat <- hernandezdavila.potato.uniformity

  # Match the mean and sd in the source
  libs(dplyr)
  dat |> group_by(expt) |> summarize(mn=mean(yield), sd=sd(yield))

  libs(desplot)
  desplot(dat, yield ~ col*row, subset=expt=="E1",
          tick=TRUE, flip=TRUE, aspect=(42*0.9)/(12*0.9),
          main="hernandezdavila.potato.uniformity - Expt E1")
  desplot(dat, yield ~ col*row, subset=expt=="E2",
          tick=TRUE, flip=TRUE, aspect=(42*0.9)/(12*0.9),
          main="hernandezdavila.potato.uniformity - Expt E2")


}