Downy Mildew Hits Finger Lakes Grapes

Downy mildew on grape leaf. (Photo credit: Cornell University)
Downy mildew on grape leaf. (Photo credit: Cornell University)

In the latest Finger Lakes Vineyard Update from Cornell Cooperative Extension Finger Lakes Grape Program, Mike Colizzi, Extension specialist says that Finger Lakes grape growers are seeing increased incidence of downy mildew.

“Are weather patterns changing and causing more nights with humidity over 95%? Whatever the reason there is no doubt we are seeing more of it these past couple of years than anyone can remember before” he says.

According to Colizzi, this growing season has also created ideal conditions for botrytis infections.

Colizzi suggests growers read fact sheets for treatment methods for downy mildew and for botrytis.

Did you experience weather-related or fire damage on your crops this growing season?

View Results

Loading ... Loading ...
Also in the latest Finger Lakes Vineyard Update, Hans Walter-Peterson, viticulture Extension specialist, notes growers are seeing more vines or portion of vines collapsing during this portion of the growing season.

“There will be fewer blocks that will qualify for assistance from the Tree Assistance Program than we anticipated earlier this year. With some localized exceptions, most vines in blocks that we’ve been visiting have some suckers coming from the bottom of the vine that can likely be retrained and developed into new vines,” he writes.

Walter-Peterson says Gewürztraminer and Merlot varieties suffered the most winter injury this growing season, but Riesling and Chardonnay fared well.

“Yields on Cabernet Franc seem to be all over the board, from blocks that look like almost nothing happened this winter to others with virtually no crop to speak of. Pinot Noir seems to have come through the winter in better shape than we anticipated. Of course, how each variety fared is dependent on where the vineyard is located and other factors.

Source: Cornell Cooperative Extension Finger Lakes Grape Program news bulletin

Topics: , , , , , , , ,

Leave a Reply

Disease Control Stories
Disease ControlStone Fruit Rots Rampant In East
July 21, 2015
The incidents of fruit rots in both sweet and tart cherries and peaches and nectarines are quite high in Pennsylvania Read More
UF/IFAS scientists Edward Evans and Jonathan Crane study diseased avocados in a South Florida grove.
Disease ControlDeadly Disease Cutting Down Florida Avocado Trees Likely To Push Up Prices
July 17, 2015
The economic impacts of laurel wilt disease management costly for domestic producers. Read More
tomato plants showing signs of Fusarium wilt
Disease ControlGrowers, Scientists Setting Sights On Soilborne Disease
July 14, 2015
Further removed from methyl bromide, nasty maladies like Fusarium are finding a way back into fields. Read More
Crop ProtectionEarly Blight And Septoria Leaf Spot Rampant On Pennsylvania Tomatoes
July 8, 2015
According to a news release from Penn State University, early blight and Septoria leaf spot are present in Pennsylvania tomato Read More
Crop ProtectionDowny Mildew Reported In Ohio Cucumber Fields
July 8, 2015
According to a disease update from Ohio State University Extension, downy mildew was reported in cucumbers on farms in West Read More
BerriesRainy Weather Causing High Risk For Phytopthora In Berries
June 29, 2015
With the rainy weather the Midwest has recently received, the conditions for Phytophthora diseases increases. An increased risk for oomycetes, Read More
Disease ControlQuintec Fungicide Receives Label For Bacterial Spot Suppression In Tomatoes
June 26, 2015
Quintec fungicide from Dow AgroSciences, known as an effective treatment for suppressing bacterial spot in peppers, is now available to Read More
The Latest
Late blight shown in a tomato
Disease ControlLate Blight Identified In Indiana, Michigan
July 28, 2015
A potato field in Michigan and a potato and tomato field in Indiana have documented the disease. Read More
downy mildew symptoms on basil
Disease ControlRed Lights Slow Down Growth Of Downy Mildew On Basil
July 22, 2015
University of Florida scientists say the technology may help growers manage the disease and reduce chemical inputs. Read More
Bacterial wilt of curcurbits
CucurbitsWin The War Against Bacterial Wilt Of Cucurbits
July 22, 2015
Learn how to identify, the survival and spread, as well as management methods of this vegetable disease. Read More
Disease ControlStone Fruit Rots Rampant In East
July 21, 2015
The incidents of fruit rots in both sweet and tart cherries and peaches and nectarines are quite high in Pennsylvania Read More
UF/IFAS scientists Edward Evans and Jonathan Crane study diseased avocados in a South Florida grove.
Disease ControlDeadly Disease Cutting Down Florida Avocado Trees Likel…
July 17, 2015
The economic impacts of laurel wilt disease management costly for domestic producers. Read More
tomato plants showing signs of Fusarium wilt
Disease ControlGrowers, Scientists Setting Sights On Soilborne Disease
July 14, 2015
Further removed from methyl bromide, nasty maladies like Fusarium are finding a way back into fields. Read More
Crop ProtectionEarly Blight And Septoria Leaf Spot Rampant On Pennsylv…
July 8, 2015
According to a news release from Penn State University, early blight and Septoria leaf spot are present in Pennsylvania tomato Read More
Crop ProtectionDowny Mildew Reported In Ohio Cucumber Fields
July 8, 2015
According to a disease update from Ohio State University Extension, downy mildew was reported in cucumbers on farms in West Read More
BerriesRainy Weather Causing High Risk For Phytopthora In Berr…
June 29, 2015
With the rainy weather the Midwest has recently received, the conditions for Phytophthora diseases increases. An increased risk for oomycetes, Read More
Disease ControlQuintec Fungicide Receives Label For Bacterial Spot Sup…
June 26, 2015
Quintec fungicide from Dow AgroSciences, known as an effective treatment for suppressing bacterial spot in peppers, is now available to Read More
Crop ProtectionDowny Mildew Makes Early Appearance In Michigan Cucumbe…
June 23, 2015
An alert sent by Michigan State University (MSU) Extension confirms the presence of downy mildew on cucumber leaves in Michigan. Read More
Apples & PearsDon’t Neglect Overwintering Fire Blight Cankers
June 22, 2015
Canker blight has been seen in Pennsylvania orchards, thanks to ideal weather conditions as of late. Kari Peter of Penn Read More
Disease ControlFMC’s RHYME Fungicide Labeled In California And Arizona
June 18, 2015
RHYME fungicide is now labeled for use in California and Arizona  for control of powdery mildew and black rot in Read More
BerriesCaptan Gold 4L Fungicide Now Registered In California
June 16, 2015
ADAMA has received EPA approval for Captan Gold 4L liquid fungicide for use on strawberries, tree fruits, and other specialty Read More
Disease ControlYeasts Found On Plum Surfaces May Protect Against Patho…
June 16, 2015
Some naturally occurring yeasts may be useful for protecting stone fruits against pathogens that attack after harvest. Scientists at the Read More
Disease ControlTips For Grapevine Trunk Disease Diagnostics, Preventio…
May 28, 2015
Various pathogens and environmental factors are considered to be major threats to the vineyard’s health. Pathogens are disease-causing organisms such Read More
Disease ControlPotential New Peach Disease In California
May 28, 2015
Last year, disease levels were very low in the cling peach growing districts of California. Still, several diseases continue to Read More
A view from a low-altitude helicopter shows avocado groves in south Miami-Dade County.
Disease ControlEyes In The Sky Provide Early Detection Of Destructive …
May 27, 2015
Study using multispectral photography helps scientists successfully scout out laurel wilt-affected trees. Read More