
The experiment consists of 16 treatments (cultivars) of sorghum conducted in a balanced squared lattice design and the yield by plot (kg/plot).
data(sorghum)
sorghum
An incomplete balanced block design with 4 blocks, 16 treatments,
and 5 repetitions, that is, the yield of each treatment is measured 5 times.
sorghum
is a list with 4 elements. The first tr is a factor of lenght 80
with 16 levels describing the treatments. The second dm is data.frame
describing the design matrix. Its columns are x, bl (blocks) and r
repetitions. The third y is a numeric vector the yields. The fourth dfm
is a data frame with four columns. The first tree columns are the design matrix
and the fourth is y.
The experiment was conducted at EMBRAPA Milho e Sorgo (The Brazilian Agricultural Research Corporation, Corn and Sorghum section).
# NOT RUN {
library(ScottKnott)
data(sorghum)
av <- aov(y ~ r/bl + x,
data=sorghum$dfm)
sk <- SK(av,
which='x',
sig.level=0.05)
summary(sk)
plot(sk)
# }
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