Dose-mortality data, for fumigation of codling moth with methyl bromide

Description

Data are from trials that studied the mortality response of codling moth to fumigation with methyl bromide.

Usage

data(codling)

Format

A data frame with 99 observations on the following 10 variables.

dose

Injected dose of methyl bromide, in gm per cubic meter

tot

Number of insects in chamber

dead

Number of insects dying

pobs

Proportion dying

cm

Control mortality, i.e., at dose 0

ct

Concentration-time sum

Cultivar

a factor with levels BRAEBURN FUJI GRANNY Gala ROYAL Red Delicious Splendour

gp

a factor which has a different level for each different combination of Cultivar, year and rep (replicate).

year

a factor with levels 1988 1989

numcm

a numeric vector: total number of control insects

Details

The research that generated these data was in part funded by New Zealand pipfruit growers. The published analysis was funded by New Zealand pipfruit growers. See also sorption.

Source

Maindonald, J.H.; Waddell, B.C.; Petry, R.J. 2001. Apple cultivar effects on codling moth (Lepidoptera: Tortricidae) egg mortality following fumigation with methyl bromide. Postharvest Biology and Technology 22: 99-110.