igue.sugarcane.uniformity | R Documentation |
Uniformity trial with sugarcane in Brazil, 1982.
data("igue.sugarcane.uniformity")
A data frame with 1512 observations on the following 3 variables.
row
row
col
column
yield
yield, kg/plot
A uniformity trial with sugarcane in the state of Sao Paulo, Brazil, in 1982. The field was 40 rows, each 90 m long, with 1.5 m between rows.
Field width: 36 plots * 1.5 m = 54 m
Field length: 42 plots * 2 m = 84 m
Toshio Igue, Ademar Espironelo, Heitor Cantarella, Erseni Joao Nelli. (1991). Tamanho e forma de parcela experimental para cana-de-acucar (Plot size and shape for sugar cane experiments). Bragantia, 50, 163-180. Appendix, page 169-170. https://dx.doi.org/10.1590/S0006-87051991000100016
None
## Not run:
library(agridat)
data(igue.sugarcane.uniformity)
dat <- igue.sugarcane.uniformity
# match Igue CV top row of page 171
sd(dat$yield)/mean(dat$yield) # 16.4
libs(desplot)
desplot(dat, yield ~ col*row,
flip=TRUE, tick=TRUE, aspect=(42*2)/(36*1.5),
main="igue.sugarcane.uniformity")
## End(Not run)
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