metsulfuron {nlreg}

Metsulfuron Methyl Data

Description

The metsulfuron data frame has 40 rows and 3 columns.

Bioassay on the action of metsulfuron methyl, a sulfunylurea herbicide, on a tissue culture of Brassica napus L. The experiment consists of 8 doses and 5 replications at each level.

Usage

data(metsulfuron)

Format

This data frame contains the following columns:

group

indicator variable for each tested dose;

dose

the tested dose (nmol/l);

area

the callus area (mm^2).

Source

The data were obtained from

Seiden, P., Kappel, D. and Streibig, J. C. (1998) Response of Brassica napus L. tissue culture to metsulfuron methyl and chlorsulfuron. Weed Research, 38, 221–228. Dataset M2.

References

Bellio, R., Jensen, J.E. and Seiden, P. (2000). Applications of likelihood asymptotics for nonlinear regression in herbicide bioassays. Biometrics, 56, 1204–1212.

Brazzale, A. R. (2000) Practical Small-Sample Parametric Inference. Ph.D. Thesis N. 2230, Department of Mathematics, Swiss Federal Institute of Technology Lausanne. Section 5.3, Example 7.

Examples

data(metsulfuron)
attach(metsulfuron)
plot(dose, area, xlab = "tested dose (nmol/l)", 
     ylab = "log callus area (mm^2)", log = "y")
detach()