kirk.potato: Variety trial of potatoes, highly replicated

In kwstat/agridat: Agricultural Datasets

Variety trial of potatoes, highly replicated

Description

Variety trial of potatoes, highly replicated

Usage

data("kirk.potato")

Format

A data frame with 380 observations on the following 5 variables.

row

row ordinate

col

column ordinate

rep

replicate (not block)

gen

genotype (variety)

yield

yield, pounds per plot

Details

A highly-replicated variety trial of potatoes planted in 1924 with check plots every 5th row. Entries were not randomized. The rod rows were planted in series across the field, the rows spaced five links apart (nearly 3.5 feet) and with 3.5 foot passes between the series.

The replicates are sometimes dis-jointed, so are not really blocks.

Source

Kirk, L. E. and C. H. Goulden (1925) Some statistical observations on a yield test of potato varieties. Scientific Agriculture, 6, 89-97. https://doi.org/10.4141/sa-1925-0088 (paywall) https://www.google.com/books/edition/Canadian_Journal_of_Agriculture_Science/TgIkAQAAMAAJ

References

None

Examples

## Not run: 
  library(agridat)
  data(kirk.potato)
  dat <- kirk.potato
  libs(desplot)
  desplot(dat, yield ~ col*row,
          flip=TRUE, aspect=1,
          main="kirk.potato")

  # Match means in Table I
  libs(dplyr)
  dat 

## End(Not run)

kwstat/agridat documentation built on Dec. 17, 2024, 3:56 p.m.