14 



Table 1. Average percent insect injury on fruit at harvest in 



good or partial cooperator IPM and in Check commercial orchards 

 in Massachusetts, 1980. 



z 

 Based on on-tree survey of 600-1600 fruit per block at harvest 

 (100 fruit per tree from each of 2 trees adjacent to trapping 

 stations) . 



y 



Partial cooperators were those who followed less than 60% of 

 advised spray recommendations. 



X 



Does not include "partial cooperator" blocks. 



Removable fruit injury was only 37% as great in IPM as in 

 same orchard non-IPM blocks, but 74% more than in Check blocks, 

 while no superficial type injury was found in partial cooperator 

 blocks . 



