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Seed Potato Production in Montana

Seed Potato Production in Montana. Dr. Nina Zidack Director, Montana Seed Potato Certification. Montana Potato Industry. 9,800 Acres in 2008 14.4% of seed potatoes for US crop $38.4 million. Montana Acreage since 2000. MT Rules for Certification.

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Seed Potato Production in Montana

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  1. Seed Potato Production in Montana Dr. Nina Zidack Director, Montana Seed Potato Certification

  2. Montana Potato Industry • 9,800 Acres in 2008 • 14.4% of seed potatoes for US crop • $38.4 million

  3. Montana Acreage since 2000

  4. 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

  5. Limited Generations • Tissue Culture • Plantlets, Microtubers • Nuclear • Generation 1 • Generation 2 • Generation 3 • Generation 4

  6. Field Inspections

  7. Important Diseases and Pests for Certification

  8. Potato Virus Y (PVY) • Yield Limiting • Tuber borne • Aphid transmission • Multiple strain types • PVYO, PVYN, PVYN:O, PVYNT PVYNT:N • High Recombination Frequency

  9. Vectors of Concern for Certification – Aphids

  10. Circulative or persistent transmission Process may take 24 hrs or more!

  11. Stylet borne or non-persistant transmission

  12. Virus sticks to mouthparts and is wiped off during next probing event Process is virtually instantaneous!

  13. Leafhoppers – Phytoplasma Diseases

  14. Potato Psyllids – Zebra Chip

  15. Stubby Root Nematode – Tobacco Rattle Virus (Corky Ringspot)

  16. Aphid Control • Carbamates • Aldicarb™, Vydate • Organophosphates • Methamidophos (Monitor™) • Pyrethroids • Cyfluthrin (Baythroid™, Leverage™) • Esfenvalerate (Asana™) • Mineral Oils • Neonicotinoid -SeedTreatments, In-Furrow, Foliar • FeedingInhibitors • Pymetrozine (Fulfill™)

  17. Neonicotinoids

  18. Resistance Management • Neonicotinoids • Chemistries provide multiple options for application • Colorado Potato Beetle Resistance • White fly resistance development • Only use one application per growing season

  19. Foliar Disease Control • Strobilurins • Azoxystrobin (Quadris™), Pyraclistrobin (Headline™) • Contact Fungicides • Chlorothalonil (Bravo™), Maneb™, Mancozeb (Dithane™, Manzate™) • Carboxamides • Boscalid (Endura™, Flutolanil™) • Phenylamide • Metalaxyl (Ridomil™) • Cyanoacetamide • Cymoxanil (Curzate™)

  20. Seed Piece Treatments • Benzamidazoles • Thiabendazole (Mertect™) • Aromatic hydrocarbon • PCNB (Blocker™) • Thiophanate • Thiophanate-methyl (Tops, Topsin M™) • Carboxamide • Flutolanil (Moncoat™) • Phenylpyrrole • Fludioxonil (Maxim™)

  21. IR-4 Projects • FENPYROXIMATE - Miticide • FLUDIOXONIL + AZOXYSTROBIN – postharvest • Foliar Disease Biological Control • Bacillus mycoides

  22. Needs for Montana Seed Potato Production • Diverse modes of action in chemistry • Diverse tactics

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