Tree Fruit Research & Extension Center

Crop Protection Guide for Tree Fruits

Pear at Postharvest

See General Recommendations for guidelines on table use. Read all product labels carefully.
Avoid killing bees on blooming cover crops. See Hazards to Bees.
Pest or disease to be controlled Use any one of the listed materials or combinations Amount per acre
(except where noted)
Re-entry interval Preharvest interval
or
timing restriction
Mode of action

Pear rust mite, pearleaf blister mite

 1. carbaryl
(Sevin 4F)
4-6 pt12 h 3 d 1A
 2. endosulfan
(Thionex 50W)
3 lb4 d 7 d 2A
 3. lime sulfur/calcium polysulfide See label48 h NL
  + petroleum oil-summer 0.75 % v/v4 h 0 d
 4. sulfur, dry flowable See label24 h NL M2
 
carbaryl -- If used in apple/pear interplant blocks, carbaryl may disrupt biological mite control, depending on history of use.
lime sulfur/calcium polysulfide -- See text -- Potential Fruit and Leaf Injury

Pest or disease to be controlled Use any one of the listed materials or combinations Amount per acre
(except where noted)
Re-entry interval Preharvest interval
or
timing restriction
Mode of action

Pear psylla

 1. lime sulfur/calcium polysulfide See label48 h NL
  + petroleum oil-summer 0.75 % v/v4 h 0 d
 2. sulfur, dry flowable See label24 h NL M2
 3. lime sulfur/calcium polysulfide See label48 h NL
 
lime sulfur/calcium polysulfide -- Follow label directions regarding apple interplants and orchard borders. See text—Potential Fruit & Leaf Injury.

 

Tree Fruit Research & Extension Center, Washington State University, 1100 N Westen Ave, Wenatchee WA 8901, 509-663-8181, Contact Us