| citrus {KenSyn} | R Documentation |
Meta-analysis dataset: estimation the effectiveness of a fungicidal treatment to control Phyllosticta citricarpa, a citrus fungus.
Description
The data set consists of the data collected from litterature for a meta-analysis. It contains the results of 16 trials conducted in different orchards located in different regions around the world. Each trial has two treatments: an untreated part (the control, X = Fung_Gp = 0) and a part treated with a fungicide (X = Fung_Gp = 1). In each treatment, 300 to 2000 fruits were observed, and the number of diseased fruits was counted.
Usage
organic
Format
a RangedData instance, 1 row per measurement. NbFruits : number of fruits observed, NbDiseasedF : number of diseased fruits, Code : code of the experiment, Fung_Gp : treatment (1: fungicid, 0: control)
Source
Makowski D., Vicent A., Pautasso M., Stancanelli G., Rafoss T. 2014. Comparison of statistical models in a meta-analysis of fungicide treatments for the control of citrus black spot caused by Phyllosticta citricarpa. European journal of plant pathology 139, 79-94
Examples
summary(citrus)
citrus$P_C<-citrus$NbDiseasedF[citrus$Fung_Gp==0]/citrus$NbFruits[citrus$Fung_Gp==0]
citrus$P_E<-citrus$NbDiseasedF[citrus$Fung_Gp==1]/citrus$NbFruits[citrus$Fung_Gp==1]
citrus=citrus[order(citrus$P_E),]
dotchart(citrus$P_E, xlab="Proportion of disease fruits",xlim=c(0,1),pch=19, ylab="experiment")
points(citrus$P_C,1:nrow(citrus))
legend("topleft",legend = c("treated", "control"),pch=c(19,1))