2018 Crop Protection Guide for Tree Fruits in Washington

Pear Programs

Monday, July 23, 2018

Pear at Pink

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


 Pandemis
leafroller
Pear
mildew
(Anjou)
Pear
mildew
(other
varieties)
Pear
scab
REIPHIModeMRL

Product

Except where noted, rates are amount per acre
Efficacy if estimate is available (+ to ++++)
 
Bacillus thuringiensis subsp. kurstaki See label -- -- -- 4 h0 d11B2  
Aprovia
benzovindiflupyr
--
7 fl oz
--
5.5-7 fl oz

12 h

30 d

7
 
Dithane M45 80W
mancozeb; pre-bloom schedule
-- -- --
6 lb

24 h

77 d

M3
Flint 50W
trifloxystrobin
--
2-2.5 oz

2-2.5 oz
--
12 h

14 d

11
Fontelis
penthiopyrad
--
14-20 fl oz
--
14-20 fl oz

12h

28d

7
 
Procure 480SC
triflumizole
--
8-16 fl oz

8-16 fl oz

8-16 fl oz

12 h

14 d

3
Sovran 50WG
kresoxim-methyl
--
4-6.4 oz

4-6.4 oz

4-6.4 oz

12 h

30 d

11
Vangard 75WG
cyprodinil
-- -- --
See label

12 h

0 d

9
lime sulfur/calcium polysulfide -- -- See label See label48 hNL   
sulfur, dry flowable -- -- See label -- 24 hNLM2  

Pear mildew (Anjou): Do NOT use lime sulfur or flowable micronized sulfur on Anjou.

Pear mildew (other varieties): Flint and Sovran are from the same chemical group (11). 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.

Pear scab: Procure: Rate varies when used in eradicant (postinfective) schedules. See label.


Bacillus thuringiensis subsp. kurstaki: Bts are stomach poisons, so complete coverage is very important for control. Two or three applications are usually required. Apply when forecasts predict a warm weather pattern for 3 or more days. This timing is too early for for control of obliquebanded leafroller.

Aprovia: Aprovia and Fontelis are from the same chemical group (7). Use one of them ONLY at the same growth stage.

Dithane M45 80W: Do not apply after bloom.

Fontelis: Fontelis and Aprovia are from the same chemical group (7). Use one of them ONLY at the same growth stage.

lime sulfur/calcium polysulfide: Do NOT use lime sulfur on Anjou.

Sovran 50WG: 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.

Vangard 75WG: Do not apply Vangard alone to pears. Apply in tank mixture with the recommended rate of a protectant or systemic fungicide registered on pome fruits. See label for mixing procedures.


 

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