seed potato production in montana dr. nina zidack director, montana seed potato certification
Post on 17-Dec-2015
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Montana Potato Industry
• 9,800 Acres in 20089,800 Acres in 2008
• 14.4% of seed 14.4% of seed potatoes for US croppotatoes for US crop
• $38.4 million$38.4 million
MT Rules for Certification
• No out-of-state seed potatoes can be grown for certification– All new varieties must come through MSU
Certification lab
• 100% testing on nuclear and Generation 1– No nuclear or Generation 1 potatoes sold
outside of state
• Post Harvest Test Required for all lots– 100% tested for 3 potato viruses
Limited Generations
• Tissue Culture– Plantlets, Microtubers
• Nuclear
• Generation 1
• Generation 2
• Generation 3
• Generation 4
Potato Virus Y (PVY)• Yield Limiting
• Tuber borne
• Aphid transmission
• Multiple strain types– PVYO, PVYN, PVYN:O,
PVYNT PVYNT:N
– High Recombination Frequency
Circulative or persistent transmissionCirculative or persistent transmission
Process may take 24 hrs or more!
Process is virtually instantaneous!Process is virtually instantaneous!
Virus sticks to mouthpartsVirus sticks to mouthparts and is wiped off during and is wiped off during next probing eventnext probing event
Potato Psyllids – Zebra Chip
Aphid Control• Carbamates
– Aldicarb™, Vydate
• Organophosphates
– Methamidophos (Monitor™)
• Pyrethroids
– Cyfluthrin (Baythroid™, Leverage™)
– Esfenvalerate (Asana™)
• Mineral Oils
• Neonicotinoid - Seed Treatments, In-Furrow, Foliar
• Feeding Inhibitors
– Pymetrozine (Fulfill™)
Neonicotinoids
Common Name Trade Name Seed Piece
In-Furrow
Foliar
Imidacloprid Admire Pro™ x x x
Gaucho™ x
Provado™, Leverage™ x
Thiamethoxam Cruiser™, Platinum™ x x
Actara™ x
Clothianidin Belay™ x x x
Acetamiprid Assail™ x
Resistance Management• Neonicotinoids
– Chemistries provide multiple options for application
• Colorado Potato Beetle Resistance• White fly resistance development
– Only use one application per growing season
• Strobilurins– Azoxystrobin (Quadris™), Pyraclistrobin (Headline™)
• Contact Fungicides– Chlorothalonil (Bravo™), Maneb™, Mancozeb (Dithane™,
Manzate™)
• Carboxamides– Boscalid (Endura™, Flutolanil™)
• Phenylamide– Metalaxyl (Ridomil™)
• Cyanoacetamide– Cymoxanil (Curzate™)
Foliar Disease Control
Seed Piece Treatments
• Benzamidazoles– Thiabendazole (Mertect™)
• Aromatic hydrocarbon– PCNB (Blocker™)
• Thiophanate– Thiophanate-methyl (Tops, Topsin M™)
• Carboxamide– Flutolanil (Moncoat™)
• Phenylpyrrole– Fludioxonil (Maxim™)
IR-4 Projects
• FENPYROXIMATE - Miticide
• FLUDIOXONIL + AZOXYSTROBIN – postharvest
• Foliar Disease Biological Control – Bacillus mycoides
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