u 

 u 



O 

 d 



A 



20 



16 



12 



8 



4 











2.5 



10 



40 



1 mg GA/day 



2 mg GA/day ^ 



B 



AB 



2.5 10 40 



AMOUNT OF BENZALDEHYDE (mg/day) 



Figure 3. PC captures by A) panel traps and B) pyramid traps in the 2002 study as a function of amounts 

 of BEN (benzaldehyde) and GA (grandisoic acid) used. For each graph, points in each Hne not 

 superscribed by the same letter are significantly different at odds of 19:1. 



Results 



2001 Study. Overall, 538 PCs were captured by 

 traps (312 PCs by panels and 226 PCs by pyramids) 

 over the period of 62 days that encompassed the PC 



season in 2001 (April 30-June 30). 



In 2001, BEN was the only host volatile that for 

 both trap types significantly enhanced the response of 

 PCs to GA. To illustrate, panel traps baited with 

 BEN+GA captured 1 5 times more PCs than unbaited 



16. 



Fruit Notes, Volume 67, Fall, 2002 



