agridat (version 1.12)

odland.soybean.uniformity: Uniformity trials of soy hay and soybeans.

Description

Uniformity trials of soy hay and soybeans.

Format

Data frames with 3 variables.

row

row ordinate

col

column ordinate

yield

yield

Details

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

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

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 seems to partially missing.

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

Examples

# NOT RUN {
data( odland.soyhay.uniformity)
dat1 <- odland.soyhay.uniformity
desplot(yield ~ col*row, dat1, flip=TRUE,
        aspect=200/(42*30/12), # true aspect ratio
        main="odland.soyhay.uniformity")


data( odland.soybean.uniformity)
dat2 <- odland.soybean.uniformity
desplot(yield ~ col*row, dat2, flip=TRUE,
        aspect = 232/(55*30/12), # true aspect
        main="odland.soybean.uniformity")

# }