shf (slate hall farm) contains data from a field experiment to compare 25 varieties of wheat at Slate Hall farm, UK, 1976.
To load the file into ASReml-R and view the contents use the commands:
library(asreml) data(package="asreml") data("shf") View(shf)
|A data frame with 7 columns and 150 rows:|
|Rep||Complete field replicates, factor with 6 levels|
|RowBlk||Incomplete row blocks; factor with 30 levels|
|ColBlk||Incomplete column blocks; factor with 30 levels|
|Row||Long row blocks; factor with 10 levels|
|Column||Long column blocks; factor with 15 levels|
|Variety||Variety names; factor with 25 levels|
|yield||Grain yield in grams|
The trial was a balanced lattice with 25 varieties in 6 replicates, arranged in a 15 column by 10 row grid of plots.
Kempton RA and Fox PN (1997). Statistical Methods for Plant Variety Evaluation. Chapman and Hall.