kiesselbach.oats.uniformity.Rd
Uniformity trial of oats at Nebraska in 1916.
data("kiesselbach.oats.uniformity")
A data frame with 207 observations on the following 3 variables.
row
row
col
column
yield
yield bu/ac
Experiment conducted in 1916. Crop was Kerson oats. Each plot covered 1/30th acre. Oats were drilled in plats 66 inches wide by 16 rods long. The drill was 66 inches wide. Plats were separated by a space of 16 inches between outside drill rows.
The source document includes three photographs of the field.
1 acre = 43560 sq feet
1/30 acre = 1452 sq feet = 16 rods * 16.5 ft/rod * 5.5 ft
Field width: 3 plats * 16 rods/plat * 16.5 ft/rod = 792 feet
Field length: 69 plats * 5.5 ft + 68 gaps * 1.33 feet = 469 feet
Kiesselbach, Theodore A. (1917). Studies Concerning the Elimination of Experimental Error in Comparative Crop Tests. University of Nebraska Agricultural Experiment Station Research Bulletin No. 13. Pages 51-72. https://archive.org/details/StudiesConcerningTheEliminationOfExperimentalErrorInComparativeCrop https://digitalcommons.unl.edu/extensionhist/430/
None.
# \dontrun{ library(agridat) data(kiesselbach.oats.uniformity) dat <- kiesselbach.oats.uniformity range(dat$yield) # 56.7 92.8 match Kiesselbach p 64.#> [1] 56.7 92.8libs(desplot) desplot(dat, yield ~ col*row, tick=TRUE, flip=TRUE, aspect=792/469, # true aspect main="kiesselbach.oats.uniformity")# }