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Updated: February 8, 2024
Spray Program for Multi-Small Fruit Plantings
Multi-small fruit spray program for the control of major small fruit pests and diseases.
Updated: September 21, 2023
Timely Viticulture
Timely Viticulture is an electronic newsletter designed to remind grape producers of seasonal vineyard needs and considerations throughout the year.
Updated: September 21, 2023
Spotted Lanternfly (SLF) II - Scouting and Management
The Spotted Lanternfly (SLF) is now confirmed in Cecil and Harford Counties in Maryland, and has the potential to be a very significant pest in vineyards. For background information, please see the TimelyVit Spotted Lanternfly (SLF) I—Background, for basic information. This Timely Viticulture was created to give growers information of how to scout for the pest and some management options and strategies.
Updated: August 29, 2023
Pre-Harvest Disease Management and Late Season Bunch Rots
Many vineyards are approaching or already within 30 days of the anticipated harvest date for early wine grape varieties. During this window, grape berries are becoming very susceptible to a variety of late-season rots, such as ripe rot, sour rot, Botrytis bunch rot, and other “secondary-fungi” associated with bunch rots.
Updated: August 23, 2023
Disease Management–Botrytis
Botrytis is a major disease threat as harvest approaches. Botrytis cinerea is a fungus that affects many plant species, especially wine grapes, where it is commonly known as Botrytis bunch rot or gray mold.
Updated: August 23, 2023
Spotted Lanternfly (SLF) I—Background
The Spotted Lanternfly (SLF) is now confirmed in Cecil and Harford Counties in Maryland, and populations in Pennsylvania, New Jersey, Delaware and Virginia have been growing. The pest has been impacting vineyards in Pennsylvania. What is clear at this junction is that (1) grapevines are a favorite host of this pest and, (2) its feeding damage coupled with winter cold stress can cause vine death. At ground zero in Pennsylvania, feeding from this pest, combined with the moderately cold winters of 2017/18 and 2018/19 has done significant damage to multiple commercial vineyards.
Updated: August 18, 2023
Grape Pest and Weed Management
A list of resources for Grape Pest and Weed Management
Updated: June 23, 2023
Downy Mildew Management
Downy mildew is now a year-long challenge for grape growers in the East. Downy mildew is often difficult to manage because it requires specific weather conditions to become a serious threat, but it can develop into an epidemic very quickly in favorable weather.
Updated: June 23, 2023
Mid-Season Disease Management
At 3 to 4 weeks after bloom, the risks of black rot (BR), Phomopsis (Ph; including cane and leaf spot, and fruit rot), and powdery mildew (PM) are decreasing. Downy mildew (DM) will be the main threat. While most Botrytis bunch rot infections occur around bloom and fruit set, bunch closing and veraison may also be critical points for protection when weather conditions are favorable for infection, especially on susceptible varieties.
Updated: May 31, 2023
Tissue Sampling
Some early cultivars in many vineyards are just starting to bloom. This is a critical time for taking tissue/petiole samples to assess the nutritional status of your vines. Remember all vineyards with income of >$2500 per year MUST have an approved nutrient management plan and MDA conducts regular monitoring to be sure you are in compliance. Recent analyzed tissue samples are at the core of the plan. The following are some timely considerations.
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