appletree {lmreg} | R Documentation |
Apple crop volume under various ground covers underneath tree (Pearce, 1983)
data(appletree)
A data frame with 24 observations on the following 4 variables.
Weight
Total weight (in pounds) of apple produced in a plot in four years, post-treatment
Treatment
Five types of permanent cropping under the apple tree (coded as 1 to 5), or no cropping at all (0)
Block
Blocks coded as 1 to 4
Volume
Total crop volume (in bushels) in four years, pre-treatment
Pearce, S.C. (1983) The Agricultural Field Experiment, Wiley, Chechester, p.284.
data(appletree)
head(appletree)