PHENOLOGICAL STAGES: First leaf unfolded and spread away from shoot
Edith Byrne, Association Program Educator I
Lake Erie Regional Grape Program
January 15, 2013
What to be doing (First leaf unfolded and spread away from shoot ):
Finish up pruning - Watch Pruning Concords Video below (bottom of page):
Weed management - pre-emergent program
Scouting for pests, e.g.,
Banded Grape Bug,
Climbing Cutworm,
Grape Flea Beetle (Steely Beetle),
Phomopsis
Prepare equipment - calibrate sprayers before each use, which will begin as early as mid- to late spring
From New York and Pennsylvania Pest Management Guidelines for Grapes: Sprayer Calibration
PEST MANAGEMENT
3" - 6" shoot growth:
Start disease management protocol for Vinifera and varieties highly susceptible to powdery mildew;
Start post-infection disease management protocol for varieties with moderate susceptibility to powdery mildew and high susceptibility to black rot;
Start primary-season protectant disease management protocol for vineyards with a history of severe Phomopsis, downy mildew, and/or black rot infections or vineyards with severe disease pressure the previous year.
MONITORING REQUIRED: weather parameters of temperature, precipitation and leaf wetness; grape cane gallmaker
NYS IPM Fact Sheets for Grapes
10" - 12" shoot growth:
Start postinfection disease management protocol for varieties with low susceptibility to powdery muldew moderate to low susceptibility to black rot, and no severe disease problems the previous year;
MONITORING REQUIRED: weather parameters of temperature, precipitation and leaf wetness; Eutypa dieback; banded grape bug
Inoculum Available for Infection:
Phomopsis
Black Rot spray
Powdery Mildew
Downy Mildew
Immediate Prebloom:
IPM Practices to be implemented: Scouting for leafhopper; continue disease management protocols; check protocols to determine where protectant fungicide is required.
MONITORING REQUIRED: weather parameters of temperature, precipitation and leaf wetness; leafhopper; rose chafer
Upcoming Events
LERGP Coffee Pot Meeting #1 -Special Spotted Lanternfly Focus
May 1, 2024 : LERGP Coffee Pot Meeting
North East, PA
Come learn how to manage SLF when it arrives. Discussion will be centered around Spotted Lanternfly research, management, experience and best practice for dealing with new and established infestations. Lunch is provided today.
LERGP Coffee Pot Meeting #2
May 8, 2024 : LERGP Coffee Pot Meeting
Irving, NY
Come join us for timely and pertinent vineyard discussion, coffee, donuts, camaraderie and pesticide credits.
LERGP Coffee Pot Meeting #3
May 15, 2024 : LERGP Coffee Pot Meeting
Ripley, NY
Come join us for timely and pertinent vineyard discussion, coffee, donuts, camaraderie and pesticide credits.
Announcements
Commercial Vehicle Awareness slide presentation
NYS Trooper, Matt Luft, presented on Commercial Vehicle Awareness at CLEREL on Thursday, August 2nd. He has given us the permission to share his slides for you to reference at your convenience to share with others or to review. Please reference this link.LERGP Podcasts- check them out!
LERGP POD CASTSLake Erie Regional Grape Program - Cornell Cooperative Extension
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