agridat (version 1.25)

gorski.oats.uniformity: Uniformity trial of oats in Poland

Description

Uniformity trial of oats in Poland

Usage

data("gorski.oats.uniformity")

Format

A data frame with 500 observations on the following 4 variables.

row

row ordinate

col

column ordinate

yield

yield, kg

field

field

Details

The authors were from Agricultural University of Dublany near Lemberg. (Originally Poland, but now Ukraine.) The experiments were carried out on the fields of the Dublany estate.

Gorski & Stefaniow (1917) does not show the layout of the plots. They say more details are given in the journal "Roczniki nauk rolniczych". (Not yet found) Kotowski (1924) does shows the layout of the plots.

Field F1

The loamy field was sown with early oats "Rychlik mikulicki". There were measured 200 plots of 9 square meters each and harvested them in one day with a sickle. Two days later, the harvest yield from each plot was determined. We were unable to determine the harvest from plots no. 161, 163, 182, so only the harvest from 197 (instead of 200) plots was processed.

Field width: 10 plots x 3 m = 30 m

Field length: 20 plots x 3 m = 60 m

Field F2

The loess field used "Ligowo" oats on 300 9 sq m plots.

Transcription details: Data were typed and checked by K.Wright 2024.12.11. Text translation via Google Translate. The actual plot dimensions are not given, but 3m by 3m is a good approximation or may be exact.

References

Kotowski, Feliks. (1924). A criterion of field homegenity and its value in field trials. (English title). Roczniki Nauk Rolniczych, 11, 26-35. https://www.google.com/books/edition/Roczniki_nauk_rolniczych/mz0iAQAAIAAJ Polish version on page 26. English abstract on page 35.

Examples

if (FALSE) {
libs(agridat)
data(gorski.oats.uniformity)
dat <- gorski.oats.uniformity

libs(desplot)
desplot(dat, yield~col*row, subset=field=="F1",
        flip=TRUE, tick=TRUE, aspect=(20)/(10),
        main="gorski.oats.uniformity - field F1")
desplot(dat, yield~col*row, subset=field=="F2",
        flip=TRUE, tick=TRUE, aspect=(20)/(15),
        main="gorski.oats.uniformity - field F2")
}