Table 3. Types and dosage equivalents of insecticides, acaricides, and fungicides applied per 

 block in first-level and third-level IPM blocks in 1997. 



Material 



Before bloom 



1^^ level S-^"* level 



Bloom through 

 mid-June 



Insecticide 



Acaricide 



Fungicide 



Asana 



Dimethoate 



Gution 



Imidan 



Lorsban 



Provado 



Sevin 



Oil 



Savey 



Silwet 



Agrimek 



Pyramite 



Omite 



Benlate/Topsin 



Nova/Rubigan 



Manzate* 



Polyram 



Syllit 



Captec 



3.10 



0.12 

 1.10 



3.20 



0.12 

 1.00 



1.25 

 0.50 

 0.13 



1.25 

 0.38 

 0.13 



0.08 



0.08 



0.13 

 0.42 

 1.75 

 0.21 

 0.01 



0.13 

 1.54 



0.46 

 0.60 



After mid-June 



1^<- level 3'''' level 1" level 3"^ level 



1.00 

 0.13 

 0.26 



0.06 



0.16 



0.06 



* Includes also Dithane, Mancozeb, and Penncozeb. 



away downrow or crossrow, regardless of 

 whether blocks were comprised of small, 

 medium-size or large trees. We saw no 

 evidence of suppression of European red mites 

 by released T. pyri in any trees (except one) in 

 which T. pyri were released. In the lone 

 exception (a block of small trees), the foliage of 

 the release tree remained dark green throughout 

 summer, whereas the foliage of all other trees 

 in the block was decidedly bronzed by mid-July. 

 For 1998 and 1999, we plan to sample the same 

 trees sampled in each block in 1997. We expect 

 that by 1999, T. pyri will have spread to all 

 parts of each third-level IPM block and will 



have provided effective biocontrol of European 

 red mites in such blocks, particularly in blocks 

 of small trees. 



Acknowledgments 



We are grateful to the eight growers 

 participating in this experiment and who made 

 special effort to apply pesticide selectively to 

 third-level IPM blocks: Bill Broderick, Dave 

 Chandler, Dave Cheney, Dana Clark, Dave 

 Shearer, Joe Sincuk, Tim Smith, and Mo 

 Tougas. This work was supported by state/ 

 federal IPM 



Fruit Notes, Volume 62 (Number 4), Fall, 1997 



13 



