love.cotton.uniformity | R Documentation |
Uniformity trial of cotton
data("love.cotton.uniformity")
A data frame with 170 observations on the following 3 variables.
row
row
col
column
yield
yield
Within each 100-foot row, the first 20 feet were harvested as a single plot, and then the rest of the row was harvested in 5-foot lengths.
Crop location is unknown, but likely Southeast Asia given Love's work teaching in China. Date is likely about 1930-1932 based on the Cornell reference below.
Possibly more information would be in the collected papers of Harry Love at Cornell: https://rmc.library.cornell.edu/EAD/htmldocs/RMA00890.html Cotton - Plot Technic Study 1930-1932. Box 3, Folder 34
Harry Love (1937). Application of Statistical Methods to Agricultural Research. The Commercial Press, Shanghai. Page 411. https://archive.org/details/in.ernet.dli.2015.233346/page/n421
None.
## Not run:
library(agridat)
data(love.cotton.uniformity)
# omit first column which has 20-foot plots
dat <- subset(love.cotton.uniformity, col > 1)
libs(desplot)
desplot(dat, yield ~ col*row,
flip=TRUE, aspect=20/80, # just a guess
main="love.cotton.uniformity")
## End(Not run)
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