odland.soybean.uniformity {agridat} | R Documentation

## Uniformity trials of soy hay and soybeans

### Description

Uniformity trials of soy hay and soybeans at Virginia Experiment Station, 1925-1926.

### Format

Data frames with 3 variables.

`row`

  row

`col`

  column

`yield`

  yield: hay in tons, beans in bushels

### Details

Grown at West Virginia Experiment Station in 1925 & 1926. Soybeans were planted in rows 30 inches apart.

Soy hay

In 1925 the crop was harvested for forage, 42 rows, each 200 feet long. Yields of 8-foot plats recorded.

Field width: 42 plots * 30 in / 12in/ft = 105 ft

Field length: 24 plots * 8 feet = 192 feet + border = total 200 feet.

Soy beans

In 1926 the crop was harvested for seed, 55 rows, each 232 feet long. Yields of 8-foot plats were recorded. In 1926, data for the last row on page 96 seems to be missing.

Field width: 55 plots * 30 in / 12in/ft = 137.5 feet

Field length: 28 plots * 8 feet = 224 feet + border = total 232 feet.

Odland and Garber provide no agronomic context for the yield variation.

### Source

Odland, TE and Garber, RJ. 1928. Size of Plat and Number of Replications in Field Experiments with Soybeans. Agronomy Journal, 20, 93–108. http://doi.org/10.2134/agronj1928.00021962002000020002x

### Examples

    ## Not run:

      require(desplot)

      data(odland.soyhay.uniformity)
      dat1 <- odland.soyhay.uniformity
      desplot(yield ~ col*row, dat1,
              flip=TRUE, aspect=200/105, # true aspect
              main="odland.soyhay.uniformity")

      data(odland.soybean.uniformity)
      dat2 <- odland.soybean.uniformity
      desplot(yield ~ col*row, dat2, flip=TRUE,
              aspect = 232/137,
              main="odland.soybean.uniformity")

    ## End(Not run)

[Package agridat version 1.16 Index]