Crystal Stewart
Extension Vegetable Specialist134 Miller Road
Johnstown, NY 12095
cell 518-775-0018
email Crystal
Areas of Interest
Small and Beginning Farms, Organic Production Systems, Garlic
BackgroundCrystal Stewart has long been interested in commercial and consumer horticulture. She completed both her bachelor and master degrees at the University of Wisconsin. During her studies, she worked in the Department of Horticulture as a Graduate Teaching Assistant and as a Research Associate. After graduating, Crystal became a Regional Extension Educator with the South Dakota State University Cooperative Extension providing horticulture support. She joined Cornell Cooperative Extension in 2007 as the horticulture and agriculture educator in Fulton and Montgomery Counties. Today, Crystal's areas of emphasis include organic horticulture, small and beginning farmers assistance, and basic farm business management.
Apples
Apricots
Asparagus
Beets
Blueberries
Broccoli
Brussels Sprouts
Cabbage
Carrots
Cauliflower
Cherries
Cucumbers
Dry Beans
Eggplant
Ethnic Vegetables
Garlic
Grapes
Horseradish
Kohlrabi
Leeks
Lettuce / Leafy Greens
Melons
Nectarines
Onions
Parsnips
Peaches
Pears
Peas
Peppers
Plums
Potatoes
Pumpkins / Gourds
Radishes
Raspberries / Blackberries
Rhubarb
Rutabaga
Snap Beans
Squash - Summer
Squash- Winter
Strawberries
Sweet Corn
Sweet Potatoes
Tomatoes
Turnips
Upcoming Events
Ag Business Tuesdays - Clinton County
July 11, 2017
1.5 hour appts between 9:00am to 5:00pm
Plattsburgh, NY
Are you a farmer in Eastern New York with a question about the management side of your farm business? The Cornell Cooperative Extension Eastern NY Commercial Hort Team, in collaboration with CCE County offices, is offering free farm business technical assistance appointments this summer on Tuesdays at various locations in our service region. On Tuesday, July 11 from 9:00am-5:00pm we will be at CCE Clinton County.High Tunnel Field Meeting
July 12, 2017
5:00-7:00pm
Arygle, NY
Join us for a discussion of ongoing high tunnel fertility management for summer tomato crops, high tunnel soil health, as well as other summer high tunnel crop options including cucumbers and basil.In addition there will be an update on leek moth in allium crops, a discussion of downy mildew in basil, and a
demonstration of an in-row flame weeder.
Ag Business Tuesdays - Warren County
July 25, 2017
1.5 hour appts between 9:00am to 4:00pm
Warrensburgh, NY
Are you a farmer in Eastern New York with a question about the management side of your farm business? The Cornell Cooperative Extension Eastern NY Commercial Hort Team, in collaboration with CCE County offices, is offering free farm business technical assistance appointments this summer on Tuesdays at various locations in our service region. On Tuesday, July 25 from 9:00am-4:00pm we will be at CCE Warren County.Announcements
New Resources for Berry Crops
Berry Crop Diagnostics Tool - Much information exists on controlling plant pests and problems, but one must first identify the cause before intervention can occur. This diagnostic tool was developed to assist the student, grower, and extension educator in identifying potential causes of plant problems in berry crops
Cornell Berries YouTube Channel - Webinars and other videos that support our commercial berry production Extension and outreach
Coming soon: New NEWA berry pest forecasting tools
White Rot Update
NOW AVAILABLE: White Rot Fact Sheet: Click Here
White Rot, Sclerotinia cepivorum, decimated the onion industry in New York in the 1930's before being eradicated through careful management. More recently, in 2003, it infected 10,000 acres of garlic in California, leading to the abandonment of some garlic fields and adoption of strict containment rules. White rot has been confirmed in Northeastern states over the last decade as well, with New York being one of the last to discover the disease.
The primary reason that White Rot is such a concern is because the sclerotia, or reproductive structures, can remain dormant in the soil for up to 40 years, attacking any allium crop planted into the soil under favorable conditions. This spring was ideal for infection due to the period of cool, moist weather we had. Optimal temperature for infection is 60-65 degrees F, but infection can occur anywhere from 50-75 degrees F.
Once garlic has white rot, it generally declines rapidly. Leaves will yellow and the plant will wilt, not unlike a severe fusarium infection. However, unlike with fusarium, white rot infected bulbs are covered in black sclerotia and white fungus. To add to the confusion, another disease CAN look similar. Botrytis also causes black sclerotia and white fungal growth. However, Botrytis sclerotia are quite large, often larger than a pencil eraser.
So, what do we do now? We're still working on long-term management strategies, but the most important steps to take now are vigilance when culling (look at the plants you are pulling for symptoms like you see in this article, and if they are present, call us to take a sample and have the disease verified) and, if you see anything suspicious, reduction of movement of inoculum. The main ways diseases get moved around are by dumping culls (compost, field edges, etc) and my moving soil on equipment. Throw away your culls, and wash equipment that may have come in contact with suspicious garlic or the soil it is growing in. Everything from cultivation equipment to harvest bins should be cleaned.
We will keep learning about this disease and will keep sending out information, particularly to help you make decisions about what to sell and buy. For now, remember that the west coast has learned to manage the disease, and we will too. -Crystal Stewart, ENYCHP
Eastern New York Commercial Horticulture - Cornell Cooperative Extension
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