Uniformity trial of millet in India — lehmann.millet.uniformity • agridat

Uniformity trial of millet in India, 3 years on same land.

data("lehmann.millet.uniformity")

Format

A data frame with 396 observations on the following 5 variables.

year: year
plot: plot (row)
range: range (column)
yield: grain yield (pounds)
total: total crop yield (pounds)

Details

The 6th report has a map (only partially scanned in the pdf). The ninth report, pages 1-10 has comments. Pages 36-39 have data: Table 1 has grain yield, table 2 total yield.

Experiment farm near Bangalore. The plots are 1/10 acre, each 50 links wide and 200 links long. [6th report, p. 2]

The season of 1906 was abnormally wet compared with 1905 and 1907. [9th report]

Source

Department of Agriculture, Mysore State. [2nd-9th] Annual Report of the Agricultural Chemist. https://books.google.com/books?id=u_dHAAAAYAAJ

References

None

Examples

# \dontrun{
  
  library(agridat)
  data(lehmann.millet.uniformity)
  dat <- lehmann.millet.uniformity

  libs(desplot)
  dat$year = factor(dat$year)
  desplot(dat, yield ~ range*plot|year,
          aspect=(22*50)/(6*200),
          main="lehmann.millet.uniformity",
          flip=TRUE, tick=TRUE)
  desplot(dat, total ~ range*plot|year,
          aspect=(22*50)/(6*200),
          main="lehmann.millet.uniformity",
          flip=TRUE, tick=TRUE)
  
  # libs(dplyr)
  # group_by(dat, year) 
# }