Unified Winegrape Symposium

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Unified Winegrape Symposium 2007 Update Vine
Mealybug Research Update American Vineyard
Foundation California Table Grape
Commission California Raisin Marketing
Board Viticulture Consortium West Bayer Crop
Science (gift, product) Suterra Inc. (RD,
product) California Dept. Food
Agriculture California Dept. Pesticide
Regulation UC Cooperative Extension USDA ARS
(France) Western Regional SARE
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Napa Co. Compliance Local Eradication

• Insecticides and Vine Removal
• delayed-dormant Lorsban (OP)
• bloom-time systemic (nicotenoid)
• in-season with various contacts
• Lannate (carbamate)
• Imidan / Dimethoate (OP)
• Applaud (insect growth regulator)
• post-harvest Lorsban (OP)
• MONITORING 1 year minimum

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Napa Co. Compliance Local Eradication
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Insecticides
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Vine MB are exposed by May/June on leaves and
canes
1) Insecticide are good at exposed VMB, not good
under bark 2) Insecticides disrupt biocontrols 3)
Alternatives to Lorsban, other OPs
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Pumpkins Lorsban (OP) Lannate (Carbamate) Applaud
(IGR) Dimethoate (OP) Assail (nicotenoid) M-Ped
(Soap) Pyganic (Pyrethrum) Neemix (neem,
botonical) Ecotrol (Botanical oils) Danitol
(Pyrethroid) Saf-T-cide (Petroleum oil) Not yet
tested Movento (nicotenoid) JMS Stylet Oil
(Oil) Potted vines Admire (nicotenoid) Venom
(nicotenoid)
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Biological Control
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Worldwide one of the better parasitoids
Anagyrus pseudococci female
Anagyrus pseudococci male
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Combined with soft insecticides 80-90
parasitism of exposed VMB on leaves!
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UC / USDA / CDFA Importation Program
France
Portugal
Spain
Northern Italy
Morocco
Greece
Sicily
Tunisia
Turkey
Egypt
Israel
South Africa
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Release Program Goals (Cant be achieved) Four
regions North Coast Central Coast Northern
Interior Winegrape San Joaquin Valley Three
release combinations Anagyrus pseudococci
(Northern Italy) Coccidoxenoides peregrinus
(South Africa) ApI CpSA Three sites per
release combination control!
2006 Release 500,000 CpSA 12,000 ApI
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Parasitoids (?SEM) reared per cage
Anagyrus Pheromone
Coccidoxenoides
Anagyrus Coccidoxenoides
Anagyrus
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Mating Disruption
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MONITORING ? Identified Pheromone ? Field
Tested ? Commercial Production Millar et al.
2002. JEE Walton et a. 2004. Crop Prot.
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Initial Results with Mating Disruption
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RESULTS TRAP COUNTS
100
Control Mating disruption
80
60
Male mealybugs per trap per week
40
20
0
Apr 1
May 1
Jul 1
Aug 1
Sept 1
Oct 1
Nov 1
Dec 1
Jun 1
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MATING DISRUPTION
(1) Sprayable formula lasts only 21-28 days,
requiring repeated applications
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• Mating Disruption Trial
• Del Rey, Fresno County
• 2006-08 replicated trial
• 20-40 acre blocks
• Applaud or Admire
• 10 acre treatments
• MD or Control
• 2-3 acre sample areas

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Ant Controls
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Sustainable Argentine ant control Liquid bait
program
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Argentine ants are an aggressive and invasive
species that will displace native ant species
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Anagyrus prefers 3rd instars
Coccidoxenoides prefers 1st - 2nd instars
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Liquid Ant Baits (25 sugar water )
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Liquid Ant Baits (25 sugar water) Sugar-feeding
ants
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Liquid Ant Baits (25 sugar water) Sugar-feeding
ants Developed stations (Chemsac approved)
Registered materials (imidacloprid borate
baits) New materials
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Ant Seasonal Biology Impacts Treatment Period
Males
Reproductive pupae
Reproductive larvae
Pupae
Larvae
Egg
Workers Queens
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