Epidemiology and Management of Hop Pests and Diseases

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Financial Support• Busch Agricultural Resources Inc.• Hop Products Australia, Hobart Tasmania, Australia• John I. Haas, Inc.• Miller Brewing Co.• Oregon Hop Commission• Roy Farm, Inc.• Sierra Nevada Brewing Co.• S.S. Steiner Inc.• University of Tasmania• U.S.Department of Agriculture, Ag. Research Service• U.S. Hop Industry Plant Protection Committee• Washington Hop Commission
Overall Project Objective• Integrate and develop coordinatedproduction strategies that reduceproduction input costs and crop lossesfrom powdery and downy mildew by atleast 30%
Page 1 and 2: Epidemiology andManagement of Hop P
Page 3: Compendium of HopDiseases, Arthropo
Page 7 and 8: • Johnson (1991) GDD predictsemer
Page 9 and 10: 160Accumulated GDD, 2006140120GDD (
Page 11 and 12: Downy Mildew Severity AmongBasal sp
Page 13: hopcucurbitPCR Detection of Downy M
Page 16 and 17: Multi-Gene Phylogeny• Several sin
Page 18 and 19: Type I versus Type II Error?
Page 20 and 21: Air sampling by Burkhard and Rotoro
Page 22 and 23: Pseudoperonospora humuli Sporangial
Page 24 and 25: Basal spikes per hillABasal spikes
Page 26 and 27: Fungicide Effects on Arthropods
Page 28 and 29: Spider mite populations in the uppe
Page 30 and 31: SulfurWater1234
Page 32 and 33: Mite-Fungicide Interactions• Ques
Page 34 and 35: 1210ANon-TreatedMites per leaf864Sy
Page 36 and 37: Coccinelidae per leaf/shake sample1
Page 38 and 39: Hop Aphid Populations inRelation to
Page 40 and 41: Thanks to collaboratorsand cooperat
Page 42 and 43: 1009080702007 WeatherRain Temp RH S
Page 44 and 45: Cone Browning Associated withDiffus
Page 46 and 47: Powdery Mildew Risk Index1. If grea
Page 48 and 49: 1009080702007 WeatherRain Temp RH S
Page 50 and 51: Alternaria alternataFrom Rotem (199
Page 52 and 53: Alternaria Cone Disorder• Associa
Page 54 and 55:
Alternaria Cone Disorder2007 Isolat
Page 56 and 57:
Powdery Mildew (and Alternaria)Cone
Page 58 and 59:
Rate of Mite Increase andCone Damag
Page 60:
Red Crown Rot SymptomsCourtesy Tris
Page 69:
Red Crown Rot• Phacidiopycnis sp.
Page 72 and 73:
Spatial Patterns of Affected Plants
Page 74:
Red Crown Rot• Research in Progre
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Epidemiology and Management of Hop Pests and Diseases

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