love.cotton.uniformity {agridat} | R Documentation

## Uniformity trial of cotton

### Description

Uniformity trial of cotton

### Usage

    data("love.cotton.uniformity")

### Format

A data frame with 170 observations on the following 3 variables.

`row`

  row

`col`

  column

`yield`

  yield

### Details

Within each 100-foot row, the first 20 feet were harvested as a single plot, and then the rest of the row was harvested in 5-foot lengths.

Crop location is unknown, but likely Southeast Asia given Love's work teaching in China. Date circa 1930.

Possibly more information would be in the collected papers of Harry Love at Cornell: http://rmc.library.cornell.edu/EAD/htmldocs/RMA00890.html Cotton - Plot Technic Study 1930-1932. Box 3, Folder 34

### Source

Harry Love (1936). Application of Statistical Methods to Agricultural Research. The Commercial Press, Shanghai.

### References

None.

### Examples

    ## Not run:

      data(love.cotton.uniformity)
      # omit first column which has 20-foot plots
      dat <- subset(love.cotton.uniformity, col > 1)

      require(desplot)
      desplot(yield ~ col*row, dat, flip=TRUE,
              aspect=20/80, # just a guess
              main="love.cotton.uniformity")

    ## End(Not run)

[Package agridat version 1.16 Index]