Invasives in Maine Agriculture
Transcript of Invasives in Maine Agriculture
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Invasives in Maine Agriculture
Kathy Murray
Maine Department of Agriculture, Conservation and Forestry
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Spotted-wing Drosophila
Drosophila suzukii
David Handley David Handley
John Obermeyer, Purdue Extension
Photo: Martin Hauser, CA Dept Food and Agric
• Pest of raspberries, blueberries, late strawberries
• Eastern region crop loss > $27 M/yr
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David Handley
• Rapid population increase- multiple generations/yr
• Wide host range • Wide distribution • Overwinters between stones,
under leaves, in buildings • Large economic impact
Spotted Wing Drosophila
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Managing SWD
Monitoring Trap
Harvest Early
Exclusion Netting (Alnajjar et al. 2017)
David Handley
Natural Predation (Ballman et al.)
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Brown Marmorated Stink Bug Halyomorpha halys
Chris Bergh, Virginia Tech
• Native to Asia • Fruit/veg pest • Nuisance pest in
buildings
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Brown Marmorated Stink Bug
January 2017
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Brown Marmorated Stink Bug
• Detections in trailers and homes in ME
• Invades structures in fall.
• Transported on vehicles, trailers, containers
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Allium Leafminer Phytomyza gymnostoma
• Alliums: leeks, onions, chives, garlic
• Native to Germany. Economic pest in Europe.
• Found in PA (2015), NJ
Adult egg-laying and feeding punctures
Sven Spichiger
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Allium Leafminer
Curled and distorted leaves
(photo by Garden Focused.co.uk)
Pupae in garlic (photo by Syston Allotment Society Newsletter)
Larva
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Swede Midge Contarinia nasturtii
• Found in 7 states and 6 CA provinces (including NY, VT, MA, Quebec)
• Deformed, unmarketable crucifer crops (broccoli, cabbage, cauliflower)
S. Ellis, USDA APHIS PPQ
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Daylily Leafminer
Ophiomyia kwansonis
• Daylilies
• Found from TX to NY. Unconfirmed report in ME
Charley Eiseman
Steven Frank
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Spotted Lanternfly Lycorma delicatula—native to Asia • Found in PA 2014 • Feeds on 40 species of trees and ornamentals such as
grapes, peaches, apples, dogwood, maples, walnut, oak, and pines
• PA banned transport of firewood, outdoor lawn equipment, trucks, RVs from infested locations
Photo: Gary J. Steck
Lawrence Barringer Miriam Cooperband, USDA Lawrence Barringer
Greg Hoover
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Dickeya spp.
• Bacterial pathogens of potato.
• ‘Blackleg’ symptoms expressed under warm (> 77oF), wet conditions.
• Spread via tubers—impact on seed potato industry
• D. dianthicola widespread. D. solani not yet found in N. A.
Steve Johnson UM Extension
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Boxwood Blight Calonectria pseudonaviculata and C. henricotiae
• Fungal pathogen
• Spreads readily from nursery plants to susceptible hosts in landscape
• Regulated in PA
Microsclerotia survive years in soil and plant debris
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Mile-a-Minute Vine
Leslie J. Mehrhoff
Persicaria perfoliata • Herbaceous annual
climbing vine • Colonizes open and
disturbed areas • Seeds dispersed by
wildlife, water, equipment, nursery stock
• Found VA to MA
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Thanks! • Contributors
– Ellie Groden, Frank Drummond Lab, David Handley, Glen Koehler (UMaine)
– Sarah Scally, Carole Neil, Karen Coluzzi, Gary Fish, Ann Gibbs (ME Dept Agriculture, Conservation and Forestry)