16 



Tarnished Plant Zoecon phero- Apple maggot 



Bug Trap mone traps trap 



(unbaited white Codling Redbanded (unbaited 



Treatment Orchard rectangles) Moth leafroller red sphere) 



1.3 



5.0 



5.7 

 4.0 



1.0 



13.0 



9.3 



7.8 



67 



151 



7.0 



3.0 



5.7 

 5.2 



2.7 



14.5 



11.7 

 9.7 



Researchers in New York believe that when cumulative codling 

 moth captures/trap reach 15-20 and apple maggot captures/trap reach 

 1, fruit injury is likely to occur unless insecticide is applied. 

 A relation between plant bug or leafroller captures and need for 

 spraying has not yet been established, but substantial numbers of 

 each were trapped. Overall, the trap data show that pest pressure 

 was considerable in both the every and alternate middle plots. 



To determine the actual amount of fruit injury caused by these 

 and other pests and to determine spider mite and aphid abundance 

 on leaves, we examined 60 fruits and 60 leaves/tree on each of 6 

 trees in each plot in each block every 3 weeks from mid-April 

 until harvest. The results are given here: 



