agridat (version 1.23)

nair.turmeric.uniformity: Uniformity trial of turmeric.

Description

Uniformity trial of turmeric in India, 1984.

Usage

data("nair.turmeric.uniformity")

Format

A data frame with 864 observations on the following 3 variables.

row

row ordinate

col

column ordinate

yield

yield per plot, kg

Details

An experiment conducted at the College of Horticulture, Vellanikkara, India, in 1984. The crop was grown in raised beds.

The gross experimental area was 74.2 m long x 15.2 m wide. Small elevated beds 0.6 m x 1.5 m were raised providing channels of 0.4 m around each bed. One row of beds all around the experiment was discarded to eliminate border effects. After discarding the borders, there were 432 beds in the experiment. At the time of harvest, each bed was divided into equal plots of size .6 m x .75 m, and the yield from each plot was recorded.

Field map on page 64 of Nair. Nair focused mostly on the statistical methods and did not discuss the actual experimental results in very much detail.

There are an excess number of plots with 0 yield.

Field length: 14 plots * .6 m + 13 alleys * .4 m = 13.6 m

Field width: 72 plots * .75 m + 35 alleys * .4 m = 68 m

Data found in the appendix.

References

None.

Examples

if (FALSE) {
  
  library(agridat)
  data(nair.turmeric.uniformity)
  dat <- nair.turmeric.uniformity

  libs(lattice)
  qqmath( ~ yield, dat)
  libs(desplot)
  desplot(dat, yield ~ col*row,
          flip=TRUE, aspect=13.6/68,
          main="nair.turmeric.uniformity")

}