rothamsted.brussels {agridat} | R Documentation

## Yield of brussels sprouts, RCB with 9 fertilizer treatments

### Description

Yield of brussels sprouts, RCB with 9 fertilizer treatments

### Format

A data frame with 48 observations on the following 5 variables.

`row`

  row

`col`

  column

`yield`

  yield of saleable sprouts, pounds

`trt`

  treatment, 9 levels

`block`

  block, 4 levels

### Details

The block numbers are arbitrary, and may not match the orignal source.

Plots were 10 yards x 14 yards. Plot orientation is not clear.

### Source

Rothamsted Experimental Station Report 1934-36. Brussels sprouts: effect of sulphate of ammonia, poultry manure, soot and rape dust, pp. 191-192. Harpenden: Lawes Agricultural Trust.

### References

McCullagh, P. and Clifford, D., (2006). Evidence for conformal invariance of crop yields, Proceedings of the Royal Society A: Mathematical, Physical and Engineering Science, 462, 2119–2143.

### Examples

    data(rothamsted.brussels)
    dat <- rothamsted.brussels

    require(lattice)
    bwplot(yield~trt, dat, main="rothamsted.brussels")

    if(require(desplot)){
      desplot(yield~col*row, data=dat,
              num=trt, out1=block, cex=1, # aspect unknown
              main="rothamsted.brussels")
    }

[Package agridat version 1.16 Index]