fumig: Profiles of fumigant concentration over time
Description
Fumigant concentrations are given at six times through a 120 minute
fumigation, for seven different runs of the fumigation procedure.
Usage
fumig
Arguments
Format
A data frame with 8 observations on the following 8 variables.
testnam
a factor with levels Applied Test 1Applied Test 2Applied Test 3Confirmation Test QueryApplied Test 4Applied TestApplied Test 5Applied Test 6
Cultivar
a factor with levels BogappleChewton Pear (the names are invented)
X1
concentration (gm/cm$^3$) at 5 minutes
X2
concentration at 10 min
X3
concentration at 30 min
X4
concentration at 60 min
X5
concentration at 90 min
X6
concentration at 120 min
Source
John Maindonald
Details
Sortpion of fumigant by the fruit, different between different
cultivars, is the main reason for the decline in concentration over time.
References
For s discussion of the technology, see:
Maindonald, J.H.; Waddell B.C.; Birtles D.B. 1991. Response to Methyl
Bromide Fumigation of Codling Moth (Lepidoptera: Tortricidae) on
Cherries. Journal of Economic Entomology 85: 1222-1230.