Uniformity trial of sugarcane in Costa Rica

Usage

data("barrantesaguilar.sugarcane.uniformity")

Format

A data frame with 1600 observations on the following 3 variables.

row: row ordinate
col: column ordinate
yield: yield, kg per plot

Details

Experiment conducted in the Brunca region of Costa Rica. The can field was planted May 2018, three lines per furrow. Forty rows, each 84 meters long, were planted with a spacing of 1.5 meter between them. Two meters were removed from each end of the rows. Final area consisted of 40 rows, each 80 meters long, with 1.5 meters of spacing between them.

Field width: 40 columns * 1.5 m = 40 m

Field length: 40 rows * 2 m = 80 m

Used with permission of Luz Barrantas-Aguilar.

Data provenance: Barrantes-Aguilar supplied the data in Excel spreadsheet.

Source

Barrantes-Aguilar, Luz Elena (2019). Tamaño óptimo de la unidad experimental con caña de azúcar en la region Brunca, Costa Rica. Masters Thesis, Universidad Autónoma Chapingo. https://repositorio.chapingo.edu.mx/server/api/core/bitstreams/72177309-155c-4ae0-b643-8ca29f2fb646/content Data on pages 72-74.

References

Barrantes-Aguilar, Luz Elena, Adrián González-Estrada, y Julio César Barrantes-Mora (2024). Comparación De Cinco métodos Para Calcular El tamaño óptimo De La Parcela Experimental Con caña De Azúcar. Revista Mexicana De Ciencias Agrícolas 15 (4). México, ME:e3101. https://doi.org/10.29312/remexca.v15i4.3101.

Barrantes Aguilar, Luz Elena, Adrián González Estrada, Miguel Ángel Martínez Damián, y Ramón Valdivia Alcalá (2020). Modelos De regresión Segmentada Para Estimar El tamaño óptimo De La Parcela Experimental Con caña De Azúcar. Revista Mexicana De Ciencias Agrícolas 11 (8). México, ME:1763-73. https://doi.org/10.29312/remexca.v11i8.1934.

Examples

if (FALSE) { # \dontrun{

  library(agridat)
  data(barrantesaguilar.sugarcane.uniformity)
  dat <- barrantesaguilar.sugarcane.uniformity

  mean(dat$yield) # 19.96 match 19.9 from Barrantes-Aguilar
  
  libs(desplot)
  # Match figure 13
  desplot(dat, yield ~ col*row,
          flip=TRUE, tick=TRUE, aspect=(40*2)/(40*1.5),
          main="barrantesaguilar.sugarcane.uniformity")

} # }