2017 Crop Protection Guide for Tree Fruits in Washington

Pear Programs

Tuesday, January 16, 2018

Pear at Dormant

See General Recommendations for guidelines on table use. Read all product labels carefully.

= link to additional information in Orchard Pest Management


 Pear
psylla
REIPHIModeMRL

Product

Except where noted, rates are amount per acre
Efficacy if estimate is available (+ to ++++)
 
Ambush 25WP
permethrin
+ petroleum oil- dormant

12.8-25.6 oz
1-1.5 % v/v

12 h
12 h

NL
NL

3A
 

 
Asana XL
esfenvalerate
+ petroleum oil- dormant

1 pt
1-1.5 % v/v

12 h
12 h

28 d
NL

3A
 

 
Surround WP
kaolin clay
+ petroleum oil- dormant

25-50 lb
1-1.5 % v/v

4 h
12 h

0 d
NL

 
 
 
 
lime sulfur/calcium polysulfide
+ petroleum oil- dormant
See label
1-1.5 % v/v
48 h
12 h
NL
NL
 
 
 
 
petroleum oil- dormant 1-1.5 % v/v
++(+)
12 hNL   
sulfur, dry flowable
+ petroleum oil- dormant
See label
1-1.5 % v/v
24 h
12 h
NL
NL
M2
 
 
 

Pear psylla: Do not use esfenvalerate and permethrin more than 2 times per season. Pyrethroid (mode of action 3A) resistance is present in many areas and may severely reduce efficacy.


Surround WP: Apply two to three applications as necessary to cover new growth between dormant/ delayed dormant and first bloom.


 

Tree Fruit Research & Extension Center, 1100 N Western Ave, Washington State University, Wenatchee WA 98801, 509-663-8181, Contact Us