Late Blight Sample Collection and Submission to Cornell
Margie Lund, Extension Vegetable Specialist
Cornell Vegetable Program
![Late Blight Sample Collection and Submission to Cornell](https://rvpadmin.cce.cornell.edu/images/submission/image144.jpg)
If late blight is detected or suspected on your farm, and you cannot get a sample to a Cornell Vegetable Program staff member in a day or two, you should submit your sample to Chris Smart's lab at Cornell. Following are instructions for reporting, collecting and mailing samples to his lab.
From usablight.org:
Samples must be reported online and a form that is generated from your submission must be included with the sample. You will receive a sample number (which should be written on the sample bag when it is sent to the lab), and this number can be used to track your sample.
Report online and fill out a form. (If you are new to the system you must Register for Sample Submission BEFORE Reporting.)
When sending late blight samples it is better to send leaf tissue rather than fruit or tubers. If you do send fruit or tubers send them in a separate bag or shipment -- so they do not crush the leaf tissue in transit. What to send:
1. A minimum of 5 fresh turgid leaves with actively sporulating lesions. Smaller lesions are best. Collected from several locations when possible.
2. Place the foliage in an air-tight dry plastic (Ziploc) bag with a cushion of air - so the foliage doesn't get crushed. Use a small shipping box rather than an envelope. PLEASE write the sample number on the bag.
3. Send the sample immediately upon collection. If you must "hold" the sample overnight, keep it at 40 - 50 F.
4. Include the completed sample submission form (see instructions for reporting sample online) in the box with the sample.
5. Mail the sample via overnight mail to:
Cornell AgriTech
Attn: Colin Day / Chris Smart
630 West North St, Barton Laboratory
Geneva, NY 14456
E-mail: cds14@cornell.edu
Phone: 315-787-2441
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![more crops](images/more_crops_right_sm,.gif)
Upcoming Events
Niagara Region Vegetable Meeting
![Event Offers DEC Credits](../images/dec_credits.gif)
August 14, 2024
Clarence Center, NY
We'll start this meeting off at Root Down Farm to hear late season disease management updates in peppers and cole crops, plus current best management practices to limit fungicide resistance. Potato variety recommendations and disease control questions in potatoes will be addressed.
Then we'll head to Kreher's beet field to view and discuss alternative weed control technologies. The beet field is an on-farm demonstration of various flame weeding protocols in comparison with stacked tool cultivation equipment. One or two weeding robots will be on-hand for live demonstrations and discussion of the technology's current abilities and future potential. We'll also cover industry updates and a review of late summer disease management in squash.
2.0 DEC credits will be available in categories 23, 1a, and 10.
2024 Chipping Potato Twilight Meeting
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August 20, 2024
Dansville, NY
Join us for a brief, on-farm meeting including insect pest updates and viewing of the chipping potato variety trial. 1.0 DEC credits in categories 10, 1a, and 23 will be offered. Dinner follows!