Uniformity trial of rice in India

Usage

data("athulya.rice.uniformity")

Format

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

row: row ordinate
col: column ordinate
yield: yield per plot, grams

Details

A uniformity trial of paddy rice (Oryza sativa) grown at the Integrated Farming System Research Station, Karamana, Kerala, India, in 2018. The data values were reported as percent of mean in the source document, so we converted the values to absolute grams using the mean yield of 391.13 g per plot as reported in the source.

Field width: 20 columns x 1.2 m = 24 m

Field length: 20 rows x 1.2 m = 24 m

Data are from page 56 of the thesis (normalized yield on basic units).

Data provenance: OCR performed by Claude on page 56 of the source. hese Hand-corrected by K.Wright.

Source

Athulya, C.K. (2017). Comparison of methods for optimum plot size and shape for field experiments on paddy (Oryza sativa). M.S. Thesis, Kerala Agricultural University.

References

None

Examples

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

  mean(dat$yield) # source says 391.13

  libs(desplot)
  desplot(dat, yield ~ col*row,
          flip=TRUE, tick=TRUE, aspect=1.2/1.2,
          main="athulya.rice.uniformity")

} # }