agridat (version 1.23)

shafi.tomato.uniformity: Uniformity trial of tomato

Description

Uniformity trial of tomato in India.

Usage

data("shafi.tomato.uniformity")

Format

A data frame with 200 observations on the following 3 variables.

row

row ordinate

col

column ordinate

yield

yield, kg/plot

Details

The original data was collected on 1m x 1m plots. The data here are aggregated 2m x 2m plots.

Field length: 20 row * 2 m = 40 m

Field width: 10 col * 2 m = 20 m

References

Shafi, Sameera; S.A.Mir, Nageena Nazir, and Anjum Rashid. (2010). Optimum plot size for tomato by using S-PLUS and R-software's in the soils of Kashmir. Asian J. Soil Sci., 4, 311-314. https://www.researchjournal.co.in/upload/assignments/4_311-314.pdf

Examples

if (FALSE) {
  library(agridat)
  data(shafi.tomato.uniformity)
  dat <- shafi.tomato.uniformity

  libs(desplot)
  desplot(dat, yield ~ col*row,
          aspect=40/20, # true aspect
          main="shafi.tomato.uniformity")
}