sorghum: Completely Randomized Design (CRD)

In ScottKnott: The ScottKnott Clustering Algorithm

Completely Randomized Design (CRD)

Description

The experiment consists of 16 treatments (cultivars) of sorghum conducted in a balanced squared lattice design and the yield by plot (kg/plot).

Usage

  data(sorghum)
  sorghum

Format

An incomplete balanced block design with 4 blocks, 16 treatments, and 5 repetitions, that is, the yield of each treatment is measured 5 times. sorghum is a list with 4 elements. The first ‘⁠tr⁠’ is a factor of lenght 80 with 16 levels describing the treatments. The second ‘⁠dm⁠’ is data.frame describing the design matrix. Its columns are ‘⁠x⁠’, ‘⁠bl⁠’ (blocks) and ‘⁠r⁠’ repetitions. The third ‘⁠y⁠’ is a numeric vector the yields. The fourth ‘⁠dfm⁠’ is a data frame with four columns. The first tree columns are the design matrix and the fourth is ‘⁠y⁠’.

Details

The experiment was conducted at EMBRAPA Milho e Sorgo (The Brazilian Agricultural Research Corporation, Corn and Sorghum section).

Source

Ramalho, M.A.P. and Ferreira, D.F. and Oliveira, A.C. (2000). Experimentacao em Genetica e Melhoramento de Plantas. Editora UFLA, Lavras, Brazil, page 167.

Examples

library(ScottKnott)

data(sorghum) 

av <- aov(y ~ r/bl + x,
          data=sorghum$dfm)

sk <- SK(av,
         which='x',
         sig.level=0.05) 

summary(sk)

plot(sk)

ScottKnott documentation built on Aug. 31, 2023, 1:06 a.m.