Table 5. Peak levels of mites and mite predators in second-level and first- 

 level IPM blocks in 1992.* 



* Means in each couplet in each column followed by a different letter are 

 significantly different at odds of 19:1. ERM = European red mite; TSM 

 = two-spotted mite; Af = Amblysieus fallacis; YM = yellow mite. 



Table 6. Foliar insect pest peak population and injury levels in second-level and first-level 

 blocks in 1992.* 



* Means in each couplet in each column followed by a different letter are significantly 

 different at odds of 19:1. PLH = potato leafhopper, WALH = white apple leaftiopper; 

 ABLM = apple blotch leafminer; WAA = wooly apple aphid; GAA = green apple aphid; 

 GAAP = green apple aphid predators: cecidomyiids and syrphids. Data for PLH, PLH 

 injury, and WALH is in terms of percent of terminals examined. Data for WALH is in 

 terms of percent of fruit examined at harvest. Data for ABLM is in terms of the average 

 number of mines per 100 leaves. Data for GAA, GAAP, and WAA is in terms of the 

 percent of watersprouts examined. 



28 



Fruit Notes, Winter, 1993 



