pentanol (59), benzaldehyde (46), benzyl alcohol (44), 

 ethyl isovalerate (40), 2-pentanol (35), 2-hexanol (32), 

 phenylacetaldehyde (32), and 2-propanol (32). 



Conclusions 



These results strongly confirm previously-reported 

 attractiveness of limonene and moderately confirm 

 previously-reported attractiveness of ethyl isovalerate. 

 In addition, five other compounds not among the 16 

 compounds tested in 1998 were found to be notably 

 attractive here (RI value of 40 or greater): benzyl alco- 

 hol, decanal, geranyl propionate, hexyl acetate, and 1- 

 pentanol. Also, two compounds that were among the 

 16 tested in 1998, but not found to be attractive then, 

 were attractive here (perhaps because of a more favor- 

 able release rate here): benzaaldehyde and E-2-hexenal. 

 These findings offer promise that one or more of these 

 attractive compounds alone (or together in a blend) at 

 an appropriate release rate can be applied to visual traps 

 to substantially enhance capture of PCs. 



Acknowledgements 



This study was supported by awards from the New 

 England Tree Fruit Growers Research Committee, 

 Massachusetts Horticultural Research Center Trust 

 Funds, the USDA Northeast Regional Integrated Pest 

 Management Competitive grants program, and Mas- 

 sachusetts State and Michigan State Integrated Pest 

 Management Funds. 



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10 



Fruit Notes, Volume 64 (Number 3), Summer, 1999 



