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FALL   •   WINTER   •   SPRING   •   SUMMER          New Vineyard Timeline
Grape - Spring Content

BUSINESS MANAGEMENT   •   CULTURAL PRACTICES   •   IPM   •   VINE NUTRITION & SOILS

PHENOLOGICAL STAGES: Full flowering: 50% of caps fallen

Edith Byrne, Association Program Educator I
Lake Erie Regional Grape Program

January 8, 2013
PHENOLOGICAL STAGES: Full flowering: 50% of caps fallen

What to be doing (Full flowering: 50% of caps fallen):

Trace Bloom:
  • Roots - add nitrogen to the soil by mid-June; preferably 2 weeks prior to bloom (up to 25 lbs actual N) and 2 weeks post bloom (up to 25 lbs actual N)
  • INOCULUM AVAILABLE FOR INFECTION
    Leaves and fruiting zone - scout and spray for:
        Powdery Mildew
        Downy Mildew
        Phomopsis
        Black Rot
        Botrytis bunch rot
Bloom:
  • Row-middle management; Continue disease management protocols
  • Botrytis spray if average temperature is <60F and there is abundant rainfall
  • MONITORING REQUIRED: weather parameters of temperature, precipitation and leaf wetness
  • INOCULUM AVAILABLE FOR INFECTION
        Powdery Mildew
        Downy Mildew
        Phomopsis
        Botrytis bunch rot
        Black Rot
Postbloom:


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May 14, 2025
Ripley, NY

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2645 Albright Rd. 
Ransomville NY  14131


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