Description
nin89 is an advanced Nebraska Intrastate Nursery (NIN) breeding trial conducted at Alliance in 1988/89.
Usage
nin89
To load the file into ASReml-R and view the contents use the commands:
library(asreml)
data(package="asreml")
data("nin89")
View(nin89)
Format
| A data frame with 11 colums and 242 rows: | |
| Variety | A factor with 56 levels |
| Id | A factor with 56 integral levels |
| pid | A numeric variate containing plot numbers |
| raw | Plot weights |
| Rep | A factor with 4 levels |
| nloc | Trial location (4) |
| yield | Grain yield in t/ha |
| lat | Spatial coordinate |
| long | Spatial coordinate |
| Row | A factor with 22 levels |
| Column | A factor with 11 levels |
Details
Four replicates of 19 released cultivars, 35 experimental wheat lines and 2 additional triticale lines were laid out in a 22 row by 11 column rectangular array of plots; the varieties were allocated to the plots using a randomised complete block (RCB) design.
References
Stroup WW, Baenziger PS and Mulitze DK (1994). “Removing Spatial Variation from Wheat Yield Trials: A Comparison of Methods.” Crop Science, 86, pp. 62-66.