rothamsted.brussels: Yield of brussels sprouts, RCB with 9 fertilizer treatments

Description Format Details Source References Examples

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

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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")
}

agridat documentation built on Nov. 30, 2017, 1:02 a.m.