1000 



800 



600 



400 



200 



OO 



lOOO 



800 



600 



400 



200 



00 



1000 



80O 



^ 600 



400 



200 



OO 



weeks exposure 



% aa i\c ingrcdiort 



3 weeks exposure 



% ad i\e ingrediat 



% ad i\^. ingroclial 



■"•4- 



Provado 



Aclara 



+ + + + + in line indicates lliat spheres were treated 

 willi 20% sucrose solution prior to testing. 



Figure 1 . Mortality of apple maggot flies exposed to wooden pesticide-treated spheres subjected to 0, 3, 6, 9, or 12 

 weeks of field exposure after treatment with varying concentrations of insecticide. Flies were tested on spheres with 

 or without sugar added to the surface prior to testing. Each point represents mortality of 30 tested flies. 



12 



Fruit Notes, Volume 64 (Number 4), Fall, 1999 



