Uniformity trial of corn.

Uniformity trial of corn in Iowa in 2016.

Usage

data("jones.corn.uniformity")

Format

A data frame with 144 observations on the following 3 variables.

col

column ordinate

row

row ordinate

yield

yield, bu/ac

Details

This data corresponds to field "ISU.SE" in the paper by Jones.

Field width: 12 columns, 4.6 meters each.

Field length: 12 rows, 3 meters each.

Electronic version provided as an online supplement. The "row" and "col" variables in the supplement have been swapped for the presentation of the data here in order to be more consistent with the figures in the paper.

The electronic supplemental data is in bu/ac, but the paper uses kg/ha.

Used with permission of Marcus Jones.

Source

Jones, M., Harbur, M., & Moore, K. J. (2021). Automating Uniformity Trials to Optimize Precision of Agronomic Field Trials. Agronomy, 11(6), 1254. https://doi.org/10.3390/agronomy11061254

References

None

Examples

if (FALSE) { # \dontrun{
library(agridat)
data(jones.corn.uniformity)
dat <- jones.corn.uniformity
library(desplot)
# Compare to figure 5 of Jones et al.
desplot(dat, yield ~ col*row,
        aspect=(12*4.6)/(12*3),
        main="jones.corn.uniformity")
} # }