nonnecke.peas.uniformity {agridat} | R Documentation

## Uniformity trial of canning peas

### Description

Uniformity trial of canning peas in southern Alberta, 1957.

### Usage

    data("nonnecke.peas.uniformity")

### Format

A data frame with 540 observations on the following 5 variables.

`block`

  block factor

`row`

  row

`col`

  column

`vines`

  vines weight, pounds

`peas`

  shelled peas weight, pounds

### Details

Width of basic plot was 10 feet, length was 5 feet, as limited by the viner. At each of two blocks/locations, planting consisted of 18 rows (only 15 rows were harvested) that were 10 feet wide and 90 feet long. Rows were separated by 7 foot bare ground to facilitate harvesting. Nonnecke 1960 shows a map of one block.

Plots were harvested with a five foot mower. Vines from each plot were weighed, then shelled. The two blocks/locations were side by side and combined by Nonnecke. The optimum plot size was found to be 5 feet long and 10 feet wide.

Field width: 15 rows * 10 ft/row + 14 gaps * 7 ft/gap = 248 feet

Field length: 18 plots * 5 ft/plot = 90 feet

### Source

Ib Libner Nonnecke. 1958. Yield variability of sweet corn and canning peas as affected by plot size and shape. Thesis at Oregon State College. http://hdl.handle.net/1957/23367

### References

I. L. Nonnecke, 1960. The precision of field experiments with vegetable crops as influenced by plot and block size and shape: II. Canning peas. Canadian Journal of Plant Science, 40(2): 396-404. http://doi.org/10.4141/cjps60-053

### Examples

    ## Not run:

      data(nonnecke.peas.uniformity)
      dat <- nonnecke.peas.uniformity

      require(desplot)
      desplot(vines~col*row|block, data=dat,
              tick=TRUE, flip=TRUE, aspect=248/90, # true aspect
              main="nonnecke.peas.uniformity - vines")
      desplot(peas~col*row|block, data=dat,
              tick=TRUE, flip=TRUE, aspect=248/90, # true aspect
              main="nonnecke.peas.uniformity - peas")

      require(lattice)
      xyplot(peas~vines|block,dat,
             xlab="vine weight", ylab="shelled pea weight",
             main="nonnecke.peas.uniformity")

    ## End(Not run)

[Package agridat version 1.16 Index]