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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
# NOT RUN { data(appletree) head(appletree) # }
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