2018 Crop Protection Guide for Tree Fruits in Washington

Pear Programs

Friday, June 22, 2018

Pear at Late Spring and Summer

See General Recommendations for guidelines on table use. Read all product labels carefully.
Avoid killing bees on blooming cover crops. See Hazards to Bees.

= link to additional information in Orchard Pest Management


 Codling
moth
Grape
mealybug
Grasshoppers
Pandemis
leafroller,
obliquebanded
learoller
Pear
psylla
REIPHIModeMRL

Product

Except where noted, rates are amount per acre
Efficacy if estimate is available (+ to ++++)
 
Actara 25WDG
thiamethoxam
--
5.5 oz
+++(+)
-- --
5.5 oz
++++

12 h

14/35 d

4A
Admire Pro 4.6L
imidacloprid
--
5.6-7 fl oz
-- --
5.6-7 fl oz

12 h

7 d

4A
Altacor 35WDG
chlorantraniliprole

3-4.5 oz
++++
-- --
3-4.5 oz
++++
--
4 h

5 d

28
Assail 70WP
acetamiprid

3.4 oz

3.4 oz
+++(+)
-- --
2.3-3.4 oz
++++

12 h

7 d

4A
Bacillus thuringiensis subsp. kurstaki -- -- -- See label -- 4 h0 d11B2  
Centaur 70W
buprofezin
--
34.5 oz
++++
-- --
34.5 oz
++(+)

12 h

14 d

16
Clutch 50WDG
clothianidin
--
4-6 oz
+++(+)
-- --
4-6 oz
++++

12 h

7 d

4A
Delegate 25WG
spinetoram

6-7 oz
++++
-- --
4.5-7 oz
++++

5-7 oz

4 h

7 d

5
Esteem 35WP
pyriproxyfen

5 oz
+++
-- -- -- --
12 h

45 d

7C
Exirel
cyantraniliprole

10-17 fl oz
++++
-- --
10-17 fl oz
++++
--
12 h

3 d

28
 
FujiMite 5%EC
fenpyroximate
-- -- -- --
1-2 pt
+++(+)

12 h

14 d

21A
Imidan 70W
phosmet

3-5.33 lb
+++(+)

4.5 lb
+++
-- -- --
7 d

7 d

1B
Intrepid 2F
methoxyfenozide

16 fl oz
++(+)
-- --
16 fl oz
+++(+)
--
4 h

14 d

18A
Proclaim 5SG
emamectin benzoate
-- -- --
3.2-4.8 oz
++++
--
12 h

14 d

6
Success 2F
spinosad
-- -- --
6-10 fl oz
++++
--
4 h

7 d

5
Ultor 1.25L
spirotetramat
-- -- -- --
10-14 fl oz
+++(+)

24 h

7 d

23
azadirachtin -- -- -- -- See label
++(+)
4 h0 dun  
diflubenzuron 16 fl oz -- -- -- -- 12 h14 d15
Agri-Mek 0.15EC
abamectin
-- -- -- --
16-20 fl oz
+++(+)

12 h

28 d

6
Nexter 75WSB
pyridaben
-- -- -- --
6.6-10.67 oz
+++(+)

12 h

7 d

21A
Sevin 4F
carbaryl
-- --
2 pt
-- --
12 h

3 d

1A

table continues below...

Codling moth: Intrepid, Esteem, Dimilin, Altacor and Delegate are primarily stomach poisons and therefore excellent spray coverage of the foliage and fruit is required to achieve acceptable control.

RESISTANCE MANAGEMENT: To minimize the development of codling moth resistance to any unique class of insecticide products in the class should not be used against consecutive generations. A sound resistance management program therefore requires the use of different classes of insecticide against consecutive generations. Some orchards are experiencing lower levels of control with organophosphate insecticides. Alternative products should be used in these situations to improve control.

Grasshoppers: See text: Special Programs -- Grasshoppers

Pandemis leafroller, obliquebanded learoller: Each product listed for leafroller control must be consumed by larvae in order to be effective. Therefore good spray coverage of the foliage is critical to achieving good control with these products.


Actara 25WDG: PHI depends on rate used

azadirachtin: These products have relatively short residues; reapplication may be necessary for control. Severe phytoxicity may occur if applied to pear cultivars with Comice background.

Bacillus thuringiensis subsp. kurstaki: Two or three applications are usually required. Apply when forecasts predict a warm weather pattern for 3 or more days.

Intrepid 2F: Some leafroller populations have developed resistance to methoxyfenozide and its use could result in reduced levels of control.

Nexter 75WSB: Use 4.4 to 5.2 oz/A for ERM; use 6.6 to 10.67 oz/A for twospotted and McDaniel spider mites.

Sevin 4F: If used in apple/pear interplant blocks, carbaryl may disrupt biological mite control, depending on history of use. Do not apply carbaryl prior to 30 days after full bloom.

Success 2F: Some leafroller populations have developed resistance to spinosad and its use could results in reduced levels of control.


 

continued


 Pear
sawfly
San
Jose
scale
McDaniel
spider
mite,
twospotted
spider
mite,
European
red
mite
Pear
rust
mite
Pearleaf
blister
mite
REIPHIModeMRL

Product

Except where noted, rates are amount per acre
Efficacy if estimate is available (+ to ++++)
 
Actara 25WDG
thiamethoxam

5.5 oz
-- -- -- --
12 h

14/35 d

4A
Altacor 35WDG
chlorantraniliprole

4.5 oz
-- -- -- --
4 h

5 d

28
Assail 70WP
acetamiprid

3.4 oz
-- -- -- --
12 h

7 d

4A
Delegate 25WG
spinetoram

6 oz
-- -- -- --
4 h

7 d

5
Diazinon 50W
diazinon
--
4 lb
+++
-- -- --
4 d

21 d

1B
FujiMite 5%EC
fenpyroximate

2 pt
--
1-2 pt
++++

2 pt
+++
--
12 h

14 d

21A
Success 2F
spinosad

4 fl oz
-- -- -- --
4 h

7 d

5
Acramite 50WS
bifenazate
-- --
0.75-1 lb
++++
-- --
12 h

7 d

un
Agri-Mek 0.15EC
abamectin
-- --
10-20 fl oz
+++(+)

10-20 fl oz
++++

16 fl oz

12 h

28 d

6
Apollo 4SC
clofentezine
-- --
4-8 fl oz
++(++)
-- --
12 h

21 d

10A
Dicofol 4E
dicofol
-- --
4 pt

4 pt
--
35 d

7 d

un
 
Envidor 2SC
spirodiclofen
-- --
16-18 fl oz
++++

16-18 fl oz
++++
--
12 h

7 d

23
Kanemite 15SC
acequinocyl
-- --
21-31 fl oz
-- --
12 h

14 d

20B
Nexter 75WSB
pyridaben
-- --
4.4-10.67 oz
++(++)

10.67 oz
+++
--
12 h

7 d

21A
Savey 50DF
hexythiazox
-- --
4-6 oz
++(++)
-- --
12 h

28 d

10A
Sevin 4F
carbaryl
-- -- -- --
3 pt

12 h

3 d

1A
Vendex 50WP
fenbutatin oxide
-- --
1.5-2 lb
+(+++)

1.5-2 lb
++(++)
--
48 h

14 d

12B
Zeal 72WDG
etoxazole
-- --
3 oz
++++
-- --
12 h

14 d

10B

table continues below...

McDaniel spider mite, twospotted spider mite, European red mite: Clofentezine and hexythiazox are ovicides. When initial mite populations are high, use in combination with an adulticide.

Pear sawfly: The larvae of pearslug are fairly susceptible to most pesticides; those listed are the ones tested, but other materials and lower rates may also work. See the cherry section for addtional materials.


Actara 25WDG: PHI depends on rate used

Nexter 75WSB: Use 4.4 to 5.2 oz/A for ERM; use 6.6 to 10.67 oz/A for twospotted and McDaniel spider mites.

Sevin 4F: If used in apple/pear interplant blocks, carbaryl may disrupt biological mite control, depending on history of use. Do not apply carbaryl prior to 30 days after full bloom.

Success 2F: Some leafroller populations have developed resistance to spinosad and its use could results in reduced levels of control.

Vendex 50WP: Resistance to fenbutatin-oxide exists in many areas.


 

continued


 Pear
scab
REIPHIModeMRL

Product

Except where noted, rates are amount per acre
Efficacy if estimate is available (+ to ++++)
 
Aprovia
benzovindiflupyr

5.5-7 fl oz

12 h

30 d

7
 
Flint 50W
trifloxystrobin

2-2.5 oz

12 h

14 d

11
Fontelis
penthiopyrad

14-20 fl oz

12h

28d

7
 
Sovran 50WG
kresoxim-methyl

4-6.4 oz

12 h

30 d

11


Aprovia: Aprovia and Fontelis are from the same chemical groups. Une one of them ONLY for the same growth stage.

Flint and Sovran: To limit the potential for development of fungicide resistance, do not make more than four applications of strobilurin fungicides per season. Do not make more than two sequential applications of strobilurin fungicides. This limitation is inclusive to all strobilurin fungicides labeled for use on pome fruits.

Fontelis: Fontelis and Aprovia are from the same chemical groups. Une one of them ONLY for the same growth stage.

Sovran 50WG: Apply every 12 days until dry weather. See note for Flint.


 

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