Uniformity trial of canning peas in southern Alberta, 1957.
A data frame with 540 observations on the following 5 variables.
vines weight, pounds
shelled peas weight, pounds
Width of basic plot was 10 feet, length was 5 feet, as limited by the viner. At each of two blocks/locations, planting consisted of 18 rows (only 15 rows were harvested) that were 10 feet wide and 90 feet long. Rows were separated by 7 foot bare ground to facilitate harvesting. Nonnecke 1960 shows a map of one block.
Plots were harvested with a five foot mower. Vines from each plot were weighed, then shelled. The two blocks/locations were side by side and combined by Nonnecke. The optimum plot size was found to be 5 feet long and 10 feet wide.
Field width: 15 rows * 10 ft/row + 14 gaps * 7 ft/gap = 248 feet
Field length: 18 plots * 5 ft/plot = 90 feet
Ib Libner Nonnecke. 1958. Yield variability of sweet corn and canning peas as affected by plot size and shape. Thesis at Oregon State College. https://hdl.handle.net/1957/23367
I. L. Nonnecke, 1960. The precision of field experiments with vegetable crops as influenced by plot and block size and shape: II. Canning peas. Canadian Journal of Plant Science, 40(2): 396-404. https://doi.org/10.4141/cjps60-053
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22
## Not run: library(agridat) data(nonnecke.peas.uniformity) dat <- nonnecke.peas.uniformity libs(desplot) desplot(dat, vines~col*row|block, tick=TRUE, flip=TRUE, aspect=248/90, # true aspect main="nonnecke.peas.uniformity - vines") desplot(dat, peas~col*row|block, tick=TRUE, flip=TRUE, aspect=248/90, # true aspect main="nonnecke.peas.uniformity - peas") libs(lattice) xyplot(peas~vines|block,dat, xlab="vine weight", ylab="shelled pea weight", main="nonnecke.peas.uniformity") ## End(Not run)
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.