A uniformity trial of tomato in Guatemala

Usage

data("buesocampos.tomato.uniformity")

Format

A data frame with 260 observations on the following 3 variables.

row: row ordinate
col: column ordinate
yield: yield in kg per plot

Details

Tomato experiment conducted at La Fragua, Zacapa, Guatemala, circa 1984. Latitude 14 deg 57 min 51 sec. Longitude 89 deg 35 min 04 sec.) Basic units 3.6 m^2, 0.9m x 4m. (26 rows of 40 m length).

Field length: 26 rows * 0.9m = 23.4m

Field width: 10 plots * 4m = 40m

Data provenance: OCR by Claude Sonnet. Checked by K.Wright.

Source

Bueso Campos, Marlon Leonel (1985). Determinación del tamaño óptimo de parcela experimental en melón (Cucumis melo) para el departamento de Chiquimula, y en tomate (Lycopersicon esculentum) para el Valle de la Fragua, Zacapa. Thesis (Ingeniero Agrónomo). University of San Carlos, Guatemala. https://biblos.usac.edu.gt/opac/record/125516

References

None

Examples

if (FALSE) { # \dontrun{
library(agridat)
data(buesocampos.tomato.uniformity)
dat <- buesocampos.tomato.uniformity

mean(dat$yield) # 5.1185 match page 43
var(dat$yield) # 2.7347 matches

require(desplot)
desplot(dat, yield ~ col*row,
        flip=TRUE, tick=TRUE, aspect=(26*0.9)/(10*4),
        main="buesocampos.tomato.uniformity")
} # }