nagai.strawberry.uniformity {agridat} | R Documentation

## Uniformity trial of strawberry

### Description

Uniformity trial of strawberry in Brazil.

### Usage

    data("nagai.strawberry.uniformity")

### Format

A data frame with 432 observations on the following 3 variables.

`row`

  row

`col`

  column

`yield`

  yield grams/plot

### Details

A uniformity trial of strawberry, at Jundiai, Brazil, in April 1976.

The spacing between plants and rows was 0.3 m. Test area was 233.34 m^2. There were 18 rows of 144 plants. Each plat consisted of 6 consecutive plants. There were 432 plats, each 0.54 m^2.

Field length: 18 rows * 0.3 m = 5.4 m.

Field width: 24 columns * 6 plants * 0.3 m = 43.2 m.

### Source

Violeta Nagai (1978). Tamanho da parcela e numero de repeticoes em experimentos com morangueiro (Plot size and number of repetitions in experiments with strawberry). Bragantia, 37, 71-81. Table 2, page 75. http://dx.doi.org/10.1590/S0006-87051978000100009

### References

None

### Examples

    ## Not run:

      data(nagai.strawberry.uniformity)
      dat <- nagai.strawberry.uniformity

      # CV matches Nagai
      # with(dat, sd(yield)/mean(yield))
      # 23.42

      require(desplot)
      desplot(yield ~ col*row, dat,
              flip=TRUE, aspect=(5.4)/(43.2), # true aspect
              main="nagai.strawberry.uniformity")

    ## End(Not run)

[Package agridat version 1.16 Index]