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Pest/Disease Management

Michigan Grape Harvest Update with MSU

Niagara juice grape harvest is underway in southwest Michigan. Statewide, sugar levels have been increasing at or ahead of the recent average dates. In southern Michigan, acid levels have been slow to come down for many grape varieties. This has resulted in some early ripening varieties measuring very high sugar levels before the acid levels indicate they are ready for …

New York Veraison to Grape Harvest Update with Cornell Agritech

Statewide (with Tim Martinson, Senior Extension Association, Cornell Agritech) Cornell University — From 9/7 to our sample date of 9/13, maximum daily temperatures at Geneva ranged between 78-81 °F, with nighttime lows in the low to mid 50s. Two rainy days (9/8 and 9/9) dropped 0.8 in of rain. The rest of the week was overcast to sunny. In other words, it …

MSU Extension Michigan Grape Harvest Update

In southwest Michigan, harvest is continuing this week. Early hybrid wine grapes such as Marquette are being picked now. Harvest of some white vinifera varieties such as Sauvignon blanc is expected to begin by the end of the week. Crop adjustment work is finished and veraison in most of the varieties are completed in northwestern Michigan. (Pinot noir 10%0, Merlot …

New Spotted Lanternfly Population Found in Cuyahoga County, Ohio

Two recent press releases issued by the Ohio Department of Agriculture (ODA) and Indiana Department of Natural Resources (DNR) announced the arrival of the invasive Spotted Lanternfly (SLF; Lycorma deliatula) in Cuyahoga County, Ohio and the first detection of SLF in Indiana. The following statement was released yesterday from the Ohio Department of Agriculture: Spotted Lanternfly Found in Cuyahoga County ODA …

Michigan State University Extension Grape Crop Update

In southwest Michigan, most varieties have completed veraison. Harvest is continuing this week on early wine grape varieties being picked for sparkling wine. Some early hybrid varieties such as Marquette will be picked soon for still wine production. Veraison continues in northern vineyards, and most grape varieties are softening and their acid levels are dropping. Horticulture  At this time of …

American Vineyard September Issue

AV921

Contents of the September Issue: That Which was Lost has Been Found Growing Muscadines in Richmond, North Carolina Combating Smoke Exposure WA Wine Scientists Run Critical Studies Sustainability Leadership Awards Recognizing Leaders in Sustainable Growing The American Grapevine Grape Industry News Briefs California Indiana Michigan Minnesota New York North Carolina Washington

New Info on Fungicide Options for Muscadine Grapes

Muscadine grapes are widely grown in the southeastern U.S. for wine and for commercial fresh market and pick-your-own sales. Production is increasing and has expanded to other countries, especially production of fresh-market cultivars. Muscadines are resistant to some diseases that affect bunch grapes, such as downy mildew and Botrytis bunch rot, but are susceptible to a number of other diseases, …

Grape Harvest Begins in Michigan

Michigan State University Extension – In southwest Michigan, most varieties are in the middle of or have completed veraison. Harvest is beginning this week on early wine grape varieties being picked for sparkling wine. Veraison has begun in northern vineyards, and most grape varieties are softening and their acid levels are dropping. Horticulture At this time of the season, clusters …

Spotted Lanternfly Spreading in New York State

The spotted lanternfly – an invasive, destructive pest with a wide range of hosts including grapes, apples, hops, maple and walnut – has spread to a growing number of counties in New York state. The first major infestation in the state was detected in Staten Island in August 2020, and the insect appears to have established itself there. Two months …

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