ScottKnott (version 1.2-0)

sorghum: 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.

source

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

Details

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

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)