mead.strawberry {agridat} | R Documentation |

##
RCB experiment of strawberry

### Description

RCB experiment of strawberry

### Format

A data frame with 32 observations on the following 5 variables.

`row`

row

`col`

column

`block`

block, 4 levels

`gen`

genotype, 8 levels

`yield`

yield, pounds

### Details

A hedge along the right side (column 8) caused shading and lower
yields.

R. Mead said (in a discussion of the Besag & Higdon paper),
"the blocks defined (as given to me by the experimenter)
are the entire horizontal rows...the design of the trial is actually
(and unrecognized by me also) a checker-board of eight half-blocks
with two groups of split-plot varieties".

The two sub-groups of genotypes are G, V, R1, F and Re, M, E, P.

### Source

Unknown, but prior to 1968 according to Besag. Probably via R. Mead.

### References

R. Mead, 1990, *The Design of Experiments*.

Julian Besag and D Higdon, 1999.
Bayesian Analysis of Agricultural Field Experiments,
*Journal of the Royal Statistical Society: Series B (Statistical
Methodology)*,61, 691–746. Table 4.

### Examples

## Not run:
library(agridat)
data(mead.strawberry)
dat <- mead.strawberry
dat$sub <- ifelse(is.element(dat$gen, c('G', 'V', 'R1', 'F')),
"S1","S2")
libs(desplot)
desplot(dat, yield~col*row,
text=gen, cex=1, out1=block, out2=sub, # unknown aspect
main="mead.strawberry")
## End(Not run)

[Package

*agridat* version 1.18

Index]