agridat (version 1.25)

love.sugarcane.uniformity: Uniformity Trial of Sugarcane in Puerto Rico

Description

Uniformity Trial of Sugarcane in Puerto Rico

Usage

data("love.sugarcane.uniformity")

Format

A data frame with 400 observations on the following 3 variables.

row

row ordinate

col

column ordinate

yield

yield per plot, pounds

Details

Data from an experiment provided by F. Chadron for a first ratoon crop at Rio Piedras Agricultural Experiment Station.

Field width: 20 "sections" * 10 feet = 200 feet.

Field length: 20 rows, spaced about 4 feet apart = 80 feet.

Weight in pounds per plot

Note: Love does not give the distance between the rows, but "Soil Survey of Puerto Rico" says furrows are planted about 4 feet apart.

Love (1943) says the manuscript is based on lecture notes given in 1940, so the data of the experiment is before 1940.

Transcription details: Data were scanned from source with iPhone, checked by K.Wright. Thanks to C.Wright for providing a copy of the source book.

References

None

Examples

if (FALSE) {
library(agridat)
data(love.sugarcane.uniformity)
dat <- love.sugarcane.uniformity

require(desplot)
desplot(dat, yield ~ col*row,
        flip=TRUE, aspect=(20*4)/(20*10),
        main="love.sugarcane.uniformity")
}