TO 



CD 



C/J 

 CD 



CO 



CD 



O 



CD 



o 



1 .O 



European red mite czd Omite (full rate) 



KXl Omlte (half rate) plus Soap (full rate) 

 ■■I Soap (full rate) 

 Soap (half rate) 



0.9 -- 

 0.8 '•'- 

 0.7 -- 

 0.6-- 

 0.5-- 

 0.4--- 

 O.J3 -- 



o 



"t: 



o 



°r 0.2 4- 



0.1 -- 



O.O 



c a a b 



-8- 



a 



-o -o -& 

 -a -a -o 



a a 



o o o 



3 3 3 



18 Jul 24- Jul 30 Jul 



Mcintosh 



17 Aug 18 Jul 24 Jul 30 Jul 1 7 Aug 



Red Delicious 



Figure 4. Proportion of leaves infested with European red mite. Miticides were applied on July 19 and 31, 

 and August 7 and 14 August. Means within date and cultivar were not significantly different unless noted; 

 where noted, means labelled by different letters are significantly different at odds of 19 to 1. 



Foliage phytotoxicity 







standard chemical 



wxn chemical (half— rate) plus soap (full rate) 

 soap (full rate) 

 (half 



soap 



rate) 



Mcintosh 

 (no phytoxicity) 



n 



Red Delicious 



Figure 5. Foliage phytotoxicity of apples under different insecticide regimens. Phytotoxicity is rated from 



(none) to 4 (severe). 



24 



Fruit Notes, Spring, 1990 



