Midwest Tree Fruit Spray Guide - Iowa State University Extension ...
Midwest Tree Fruit Spray Guide - Iowa State University Extension ...
Midwest Tree Fruit Spray Guide - Iowa State University Extension ...
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PEAR PRE-BLOOM When blossom buds are separated in the cluster before bloom<br />
PEST/PROBLEM MATERIAL RATE/ACRE COMMENTS<br />
Pear scab<br />
Pear psylla (hatching eggs)<br />
PEAR BLOOM<br />
Topsin-M WSB<br />
1Vintage SC<br />
1Procure 50 WP<br />
2Mancozeb 75 DF<br />
Ziram 76 DF<br />
3Sovran 50 WG<br />
3Flint 50 WG<br />
3Pristine 38 WG<br />
Scala 5 SC<br />
Vangard 75 WG<br />
Syllit 3.4F<br />
4Difenoconazole (Inspire Super MP) plus<br />
Cyprodinil (Vangard WG)<br />
Fontelis<br />
Merivon<br />
Esteem 35 WP<br />
Dimilin 25 W<br />
Dimilin 2L<br />
Centaur 70 WDC<br />
Surround<br />
1 lb<br />
8–12 fl oz<br />
8–16 oz<br />
3–6 lb<br />
6–8 lb<br />
2–2.5 oz<br />
2–2.5 oz<br />
14.5–18.5 oz<br />
7–10 fl oz<br />
5 oz<br />
1.5–3 pt<br />
4 fl oz<br />
4 oz<br />
16–20 fl oz<br />
4–5.5 fl oz<br />
4–5 oz<br />
2.5–3 lb<br />
40–48 fl oz<br />
34.5–46 oz<br />
50 lb<br />
1 Vintage, Inspire Super, and Procure also will<br />
control powdery mildew. Refer to the label<br />
for further information on recommended rates<br />
for use.<br />
Gowan chemical company is voluntarily removing<br />
Vintage SC from the market. Gowan will<br />
sell and support Vintage SC through December<br />
2012. The distribution channel typically has<br />
2 years from the official date of cancellation to<br />
sell existing inventory. Growers typically have<br />
no time limitation to use up the Vintage SC they<br />
have purchased.<br />
2See note on EBDC products (page 20) on use<br />
of Mancozeb.<br />
3 Sovran, Flint and Pristine also will control<br />
powdery mildew. Refer to the label for further<br />
information.<br />
4 See comments on Inspire Super MP on page 9.<br />
Rate for Surround is per 100 gallons.<br />
PEST/PROBLEM MATERIAL RATE/ACRE COMMENTS<br />
Pear scab<br />
Same as for pre-bloom<br />
Mancozeb may not be applied past bloom<br />
above the 3 lb per acre rate. Do not apply within<br />
77 days of harvest.<br />
Fire blight<br />
Insects or mites<br />
Streptomycin 17 W<br />
Steptomycin 17 W<br />
plus<br />
Regulaid<br />
Mycoshield 17 WP<br />
Flame Out 17 WP<br />
SAVE THE BEES! Do not<br />
use insecticides during<br />
bloom.<br />
1.5 lb<br />
1 lb<br />
1 pt<br />
1 lb<br />
1 lb<br />
Start fire blight sprays at the first sign of<br />
open blossoms; repeat sprays at 4- to 5-day<br />
intervals through bloom and petal fall. If warm,<br />
wet weather occurs during bloom, use the<br />
maximum rate of streptomycin of 100 ppm<br />
(0.5 lb per 100 gal).<br />
Mycoshield and Flame Out (oxytetracycline)<br />
are registered for pear but not for apple.<br />
These products are less effective for fire blight<br />
control than streptomycin. However, where<br />
streptomycin-resistant strains of the fire blight<br />
pathogen are present, oxytetracycline is more<br />
effective than streptomycin.<br />
25 MIDWEST FRUIT TREE SPRAY GUIDE
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