Uniformity trial of sorghum — narain.sorghum.uniformity • agridat

Uniformity trial of sorghum in Pakistan, 1936.

data("narain.sorghum.uniformity")

Format

A data frame with 160 observations on the following 3 variables.

row: row
col: column
yield: yield, maunds per 1/40 acre

Details

A uniformity trial with chari (sorghum) at Rawalpindi Agricultural Station (Pakistan) in kharif (monsoon season) in 1936. Each plot was 36 feet by 30.25 feet. The source document does not describe the orientation of the plots, but the fertility map shown in Narain figure 1 shows the plots are taller than wide.

Field width: 10 plots * 30.25 feet

Field length: 16 plots * 36 feet

Source

R. Narain and A. Singh, (1940). A Note on the Shape of Blocks in Field Experiments. Ind. J. Agr. Sci., 10, 844-853. Page 845. https://archive.org/stream/in.ernet.dli.2015.271745

References

None

Examples

# \dontrun{

library(agridat)

  data(narain.sorghum.uniformity)
  dat <- narain.sorghum.uniformity
  
  # Narain figure 1
  libs(desplot)
  desplot(dat, yield ~ col*row,
          flip=TRUE, aspect=(16*36)/(10*30.25),
          main="narain.sorghum.uniformity")
  
# }