agridat (version 1.16)

odland.soybean.uniformity: 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.

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")
  
# }