Weekly Late Blight Update

This page is the online version of a listserv intended to facilitate communication about late blight in New York and the contiguous states and Canadian provinces. The report is collected by Abby Seaman, NYS IPM's Area Extension Educator for Vegetables.

To send a message to the listserv, address it to:cce-staff-lateblight-l@cornell.edu

For 7-21-09:

New York Counties with late blight reports:

New reports and updates from this past week:

From Robert Hadad, 7/22
Found LB in two fields of potatoes in Niagara Cty., NY

From Dale Young 7/21
Found Late Blight on potatoes in a home garden in the town ship of Scriba in Oswego county, NY today.

Late Blight was also reported on a commercial field of potatoes in the Sodus area of Wayne County, NY on Monday.

From John Mishanec 7/21:
This morning we found late blight on tomatoes on two farms in Schoharie County, NY.  Both farms had protective fungicides on the crops. On the larger plants with huge canopies, the spots were on the inner leaves while on the smaller plants that could get better coverage, the spots were on the stems.

From Vern Grubinger 7/17:
LB in southern and central VT at commercial farms on conventional field tomato and organic potato, respectively; also several homeowners in central Vermont where garden infections appear to have originated with purchased tomato plants from box store.

From Teresa Rusinek 7/17
Confirmed 3 more farms with LB in Ulster this AM
All three are Organic, many fewer lesions where copper was sprayed.  At one farm potato field was loaded (in a dead air corner of the farm) while the tomatoes and other potatoes elsewhere looked clean. In this case grower is flaming down section of potato field and spraying heavily with copper on the rest.

From Bess Dicklow 7/15:
Late Blight confirmed in Hampden County, Massachusetts on commercial tomato field.

From Teresa Rusinek 7/15
Up until today, i only found LB in box stores on tomato (in Ulster Co., NY), this AM I found it in the field.  Amish paste has many more infections than Primetime growing side by side, the potatoes looked clean, growing Katahdins, Corollas, Nardonna.

From Abby Seaman 7/15:
I found late blight on one tomato plant in a home garden in Avon, Livingston county, NY.  Just a few lesions on the lower leaves of one plant.  The plants were from a local garden center, not a national chain.

From Chuck Bornt 7/15:
For those of you that just read Abby's message with the counties in NY with late blight, you can add Columbia County, NY to the list as I confirmed it in two organic tomato fields and one organic potato field.
 

Previous reports:

From Chris Smart 7/14

I just confirmed late blight on potato and tomato from Genesee County NY.  The fields were close to one another, with more disease in the tomato than in potato.

From Molly Shaw 7/14:

Saw a nasty case of late blight on tomatoes in Apalachin, Tioga county (NY), this morning.  Nearby potatoes still looked good.  Checked tomatoes in nearby Owego and they're still clean.

From Amy Ivy 7/14:

Richard Gast in Franklin Co (NY) reports another potato grower has some fields infested.

From Meg McGrath 7/13:

(Long Island, NY)

Local inspector just called to report finding LB affected plants in a store.

Couple more reports of LB: 2 farms, organic potato and tomato.  Plus gardeners reporting now that they have seen photos in the paper.

From Jude Boucher, 7/10

If you haven't seen it on commercial farms yet, you should know that late blight is starting to snowball in CT.  I have found it on 5 of the last 10 farms I have visited in the CT River Valley. Joan confirmed it from first farm at the UConn lab.

Commercial farms and home gardens week of 7/7:

From John Mishanec 7/7:

In New York in Albany county - one farm with two very infected tomato fields, one potato field not infected.  Also a confirmed report from Dutchess Co. on tomatoes on an organic farm and an unconfirmed report from Fulton Co. from another organic farm, crop not reported.

From Maire Ullrich 7/7:

In New York she has found late blight on every farm she visited in the southern, central, and western parts of Orange county.

From Chuck Bornt 7/7:

In New York on tomatoes at commercial farms in Albany, Rensselaer, and Washington counties.

From Maire Ullrich 7/3:

In New York in tomatoes and potatoes on a larger acreage organic farm in Orange County

From Monica Roth 7/3:

In New York on tomatoes in a community garden in Tompkins Co.

Garden centers week of 7/7:

Additional NY counties:  Warren, Saratoga, Fulton, Oneida

6.30.09

Commercial farms and home gardens:

From Chris Smart 6/30:

In New York, late blight has been found in two commercial potato fields, one in Wayne Co., and one in Genesee Co.

Forwarded by Steve Johnson 6/29:

Late Blight has been confirmed in four potato fields in the Monteregie area, south of Montreal, Quebec

From Beth Gugino 6/26:

In Pennsylvania, 3 acres of potatoes in Lancaster Co., and tomatoes and potatoes in a large garden in Centre Co.

From Sharon Douglas 6/26:

In Connecticut, on tomato in community gardens in West Hartford and Wethersfield (Hartford County)

From Sally Miller 6/25:

In Ohio, late blight on a tomato plant purchased from a store in Franklin County (Columbus)

From Beth Gugino 6/24:

In Pennsylvania, from a commercial grower on potato and tomato and on tomato in in a garden, both in Blair Co.

From Meg McGrath 6/24:

On Long Island, on tomatoes in a home garden.

Infected tomato transplants have been reported in garden centers in several states:

New York:  Chautauqua, Chenango, Clinton, Cortland, Erie, Franklin, Jefferson, Lewis, Monroe, Ontario, Orange, Orleans, Saratoga, Schenectady, Suffolk, Tompkins, Ulster counties

(For non-NYers, the counties on this list represent areas from northern NY to Long Island and western NY to eastern NY.)

Massachusetts (Hampshire Co.)

Pennsylvania (Bradford Co.)

Connecticut (Middlesex County)

Infected tomato transplants were also found in garden centers in Bangor, Houlton and Presque Isle, Maine

6.23.09

From Meg McGrath 6/23:

Late Blight on Long Island in commercial potatoes

From Beth Gugino and Sara May 6/18:

Late blight on potato and tomato from a garden in Bedford, Co., PA

From Andy Wyenandt 6/18                                   

Late blight has been found on tomato in southern New Jersey.

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These pages are maintained by the New York State IPM Program, part of Cornell Cooperative Extension. All material is protected by Section 107 of the 1976 copyright law. Copyright is held by Cornell University and the New York State IPM Program.