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Strawberry Disease Management: Fungicides for Fruit Pathogens

Strawberry Disease Management: Fungicides for Fruit Pathogens. Steven Koike and Mark Bolda University of California Cooperative Extension Monterey County. Angular leaf spot Anthracnose Common lf spot Phomopsis lf bl. Leaf blotch Powdery mildew. Gray mold Anthracnose Rhizopus rot

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Strawberry Disease Management: Fungicides for Fruit Pathogens

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  1. Strawberry Disease Management:Fungicides for Fruit Pathogens Steven Koike and Mark Bolda University of California Cooperative Extension Monterey County

  2. Angular leaf spot Anthracnose Common lf spot Phomopsis lf bl. Leaf blotch Powdery mildew Gray mold Anthracnose Rhizopus rot Mucor rot Leather rot Powdery mildew Foliar Fruit

  3. Gray mold Anthracnose Rhizopus rot Mucor rot Leather rot Powdery mildew Angular leaf spot Anthracnose Common lf spot Phomopsis lf bl. Leaf blotch Powdery mildew Foliar Fruit

  4. Botrytis / gray mold

  5. Rhizopus

  6. Mucor

  7. Colletotrichum / anthracnose

  8. Fungicides for fruit rots • Field trial (3 reps, 4 apps, 150 gal/A) • Harvest fruit: yield and cull weights • Two post-harvest incubations: • Plastic boxes • Room temperature • Botrytis, Rhizopus, Mucor counts

  9. Treatment/acre % Botrytis Untreated 66.5 WRG 400 g 41.6 Elevate 1.5 lb 36.5 Picoxy 6 fl oz 35.2 Fontelis 14 fl oz 33.3

  10. Treatment/acre % Rhiz/Mucor Untreated 25.1 Q8Y 18 fl oz 17.8 V10135 6 fl oz 16.4 Fontelis 24 fl oz 16.3 2200 6 fl oz 10.3 2200 12 fl oz 11.6 Picoxy 12 fl oz 9.3 Pristine 18.5 oz 0.0

  11. Acknowledgments • California Strawberry Commission • Patty Ayala, Kat Kammeijer, Weston Kile, Laura Murphy, Chris Bettiga • Research Team: Mark Bolda, Steven Koike, Dan Legard, Hillary Thomas • Thanks to the participating companies.

  12. USDA

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