2018 Crop Protection Guide for Tree Fruits in Washington

Stone Fruit Programs

Thursday, August 16, 2018

Stone Fruit (not Cherry) at Petal-fall

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

= link to additional information in Orchard Pest Management


 Grape
mealybug,
mealy
plum
aphid,
leaf
curl
plum
aphid
Green
peach
aphid
Oriental
fruit
moth
Pandemis
leafroller,
obliquebanded
leafroller
Peach
twig
borer
Recommended on
(Pe=Peach; Ne=Nectarine; Ap=Apricot; Pl=Plum)
REIPHIMode

Product

Except where noted, rates are amount per acre 
Altacor 35WDG
chlorantraniliprole
-- --
4.5 oz

3-4.5 oz

3-4.5 oz

4 h

10 d

28
Assail 30SG
acetamiprid

8 oz

8 oz

8 oz
-- --
12 h

7 d

4A
Bacillus thuringiensis subsp. kurstaki -- -- -- See label See label4 h0 d11B2
Belt 4SC
flubendiamide
-- --
3-4 fl oz

3-4 fl oz

3-4 fl oz

12 h

7 d

28
Delegate 25WG
spinetoram
-- --
4.5-7 oz

4.5-7 oz

7 oz

4 h

*

5
Diazinon 50W
diazinon

4 lb
-- -- -- --
4 d

21 d

1B
Entrust 80W
spinosad
-- --
2.5 oz

2.5 oz

2.5 oz

4 h

*

5
Imidan 70W
phosmet

4 lb
--
4 lb
--
4.25 lb

7 d

14 d

1B
Intrepid 2F
methoxyfenozide
-- -- --
8-16 fl oz
--
4 h

7 d

18A
Provado 1.6F
imidacloprid

4-8 fl oz

4-8 fl oz
-- -- --
12 h

*

4A
Success 2F
spinosad
-- --
4-8 fl oz

4-8 fl oz

4-8 fl oz

4 h

*

5

*-PHI varies with crop and/or use

table continues below...

Pandemis leafroller, obliquebanded leafroller: If treatments for leafrollers were applied prior to this timing, sampling to determine the density of surviving leafrollers should be completed prior to deciding to apply additional controls.  

Most products listed act primarily as stomach poisons verses direct contact to residues, therefore, complete coverage is very important to achieve maximal control. Repeating an application of any product should be based on the leafroller population surviving previous treatments.  

Use the leafroller models on the WSU Decision Aid System (das.wsu.edu) for the optimum timing.  Follow sound resistance management practices to avoid the overuse of the same class of pesticide against consecutive leafroller generations.  

Peach twig borer: use the phenology model (http://das.wsu.edu) to time insecticides.


Delegate, Entrust, Success: PHI is 14 d on apricot, 1 d for peach and nectarine, and 7 d on plum.

Bacillus thuringiensis subsp. kurstaki: use when predicted high temperatures are >65 degrees for 3+ days. Bt has a short residual activity, and may require 2-3 applications per generation.

Entrust 80W: Entrust is a spinosad formulation registered for organic production.

Intrepid, Success: Some leafroller populations have developed resistance to these materials, so their use may result in reduced control.

Provado 1.6F: do not apply during prebloom, bloom, or when bees are actively foraging.

Delegate, Success, Entrust and Bt: primarily or exclusively stomach poisons so complete coverage is very important for efficacy. Repeat applications of any product should be based on pest pressure and the efficacy of the initial treatments based on sampling.


 

continued


 Western
flower
thrips
Brown
rot
(blossom
blight)
Coryneum
blight
(shothole)
Powdery
mildew
(Perfection
spot)
Recommended on
(Pe=Peach; Ne=Nectarine; Ap=Apricot; Pl=Plum)
REIPHIMode

Product

Except where noted, rates are amount per acre 
Delegate 25WG
spinetoram

7 oz
-- -- --
4 h

*

5
Entrust 80W
spinosad

2.5 oz
-- -- --
4 h

*

5
Success 2F
spinosad

4-8 fl oz
-- -- --
4 h

*

5
Abound 2.08F
azoxystrobin
--
12-15.5 fl oz

11-15 fl oz

11-15 fl oz

4 h

0 d

11
Adament 50WG
tebuconazole+trifloxystrobin
--
4-8 oz

4-8 oz

4-8 oz

12h

1d

3, 11
Bravo Ultrex 82.5WDG
chlorothalonil
-- --
See label
--
12 h

NL

M5
Captan 50WP
captan
--
See label
-- --
24 h

0 d

M4
Fontelis
penthiopyrad
--
14-20 fl oz

14-20 fl oz

14-20 fl oz

12h

0d

7
Pristine
pyraclostrobin+boscalid
--
10.5-14.5 oz

10.5-14.5 oz
--
12 h

0 d

11,7
Quadris Top
azoxystrobin+difenoconazole
--
12-14 fl oz

12-14 fl oz

12-14 fl oz

12h

0d

11, 3
Quash 50WDG
metconazole
--
2.5-4 oz
--
2.5-3.5 oz

12h

14d

3
Rally 40WSP
myclobutanil
--
5 oz
--
5 oz

24 h

0 d

3
Rovral 4F
iprodione
--
1-2 pt
-- --
24 h

NL

2
Unicorn DF
tebuconazole+sulfur
--
2-3 lb
--
2-3 lb

5 d

0 d

3, M2
sulfur, dry flowable -- See label -- See label24 hNLM2

*-PHI varies with crop and/or use


Delegate, Entrust, Success: PHI is 14 d on apricot, 1 d for peach and nectarine, and 7 d on plum.

Entrust 80W: Entrust is a spinosad formulation registered for organic production.

Delegate, Success, Entrust and Bt: primarily or exclusively stomach poisons so complete coverage is very important for efficacy. Repeat applications of any product should be based on pest pressure and the efficacy of the initial treatments based on sampling.

Abound 2.08F: this material is extremely phytotoxic to certain apple varieties. See Application Directions, Resistance Management, and Attention information on label.

Bravo Ultrex 82.5WDG: apply no later than shuck split.

Quadris Top: The azoxystrobin component of Quadris Top is extremely toxic to certain apple varieties.

Rally 40WSP: See label for specific use recommendations. Place into solution before adding oil.


 

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