Goss’ Bacterial Wilt Moves To Indiana

It doesn’t get a lot of fanfare, but Goss’ bacterial wilt is a concern for corn growers. The disease, which infects susceptible varieties of sweet corn, popcorn, and hybrid corn, was recently confirmed in northern Indiana by Purdue University’s Plant and Pest Diagnostic Laboratory.

The confirmed samples are from popcorn and hybrid corn fields in Pulaski County. The disease is common throughout the Midwest in limited areas and years and is currently only confirmed in the one Indiana county. Kiersten Wise, Purdue Extension field crops disease specialist and other specialists believe that early hailstorms and recent heavy rains and windstorms likely contributed to the infection and dispersal of Goss’ wilt in Indiana fields.

This is not a concern for consumers and has no impact on food safety, but it is more of a concern for producers, Wise says. There also may be implications for infected grain that’s scheduled to be exported.

Philip Marshall, director of Indiana Department of Natural Resources’ Entomology and Plant Pathology Division, says his staff is reviewing the phytosanitary requirements for certificates required for export.

"We don’t know how much impact the bacteria will have on the corn crop in this area because we don’t know what kind of resistance hybrids grown in Indiana have," Wise says. "Additional hail storms and wind-driven rain could spread Goss’ bacterial wilt locally; however, it’s a very manageable disease."

The disease, first discovered in Nebraska and caused by a subspecies of the bacterium Clavibacter michiganensis, is characterized by distinct light tan to gray lesions filled with dark specks.

"Lesions will often appear shiny due to bacteria oozing on the leaf surface," Wise says. "Blighted areas are common in susceptible varieties and can be confused with drought stress. The dark flecking and shiny areas within lesions distinguish Goss’ wilt from other bacterial diseases.”

The disease infects the plant’s vascular tissue, causing a systemic infection that can lead to wilting and stalk degradation. The infected tissue appears orange to brown in color. Wise says unlike Stewart’s wilt, Goss’ wilt does not rely on insects for disease transmission, but is both seedborne and seed transmitted. The plant has to have wounds for dispersal, she said.

"Once seed to seedling transmission occurs, disease spreads in areas that have experienced hail damage or wind-driven rain," Wise says. "It’s important that farmers recognize and identify this disease as a bacterial disease because fungicides will not control it.”

Because the disease can live in infected corn residues on the soil surface, growers with infected fields need to use tillage to break down the residue and incorporate it into the soil, she said. The affected field also should be rotated to a different crop from this year’s.

Visit www.ianrpubs.unl.edu/epublic/live/g1675/build/g1675.pdf for more information on Goss’ bacterial wilt.

Leave a Reply

Latest News
Crop Protection Products in storage
Crop InputsNewsweek: World Is ‘Awash In Glyphosate’
February 11, 2016
The world is awash in glyphosate, the active ingredient in the herbicide Roundup, produced by Monsanto. It has now become Read More
Crop InputsEPA: Let’s Talk Imidacloprid, Bees On February 18
February 11, 2016
EPA will hold an online technical briefing on its preliminary pollinator risk assessment for imidacloprid, a neonicotinoid insecticide, on Feb. Read More
ManagementThe latest on Syngenta-ChemChina Deal
February 11, 2016
Executive Editor Paul Schrimpf invites Jackie Pucci and Dave Frabotta from sister publication AgriBusiness Global to discuss the latest developments Read More
AdjuvantsUniversity of Illinois Confirms Adjuvant’s Perfor…
February 11, 2016
An independent University of Illinois study has shown that WETCIT adjuvant, now with TransPhloem technology, provides greater herbicide uptake and Read More
Crop InputsSyngenta’s Acuron Flexi Receives EPA Approval
February 11, 2016
Growers looking to control their toughest weeds with flexibility will have access to Acuron Flexi corn herbicide from Syngenta, now Read More
EquipmentAGCO Showcases White Planters 9800VE Series Planters AT…
February 11, 2016
AGCO unveiled the new White Planters 9800VE Series planter during the 2016 National Farm Machinery Show in Louisville, KY. The Read More
EquipmentCase Unveils 2000 Series Early Riser Planter At NFMS
February 10, 2016
Case IH revealed the all-new 2000 Series Early Riser planter to media and attendees at the opening of the National Read More
Syngenta Sign
Crop InputsSyngenta: Keep Ag In Mind During Election Season
February 10, 2016
As presidential candidates stake out their 2016 election platforms and key priorities, growers and their business partners should seek opportunities Read More
Crop InputsMarrone Bio Innovations Submits New Bio-Fungicide For E…
February 9, 2016
Marrone Bio Innovations, Inc. (MBI) today announced that it has submitted a new biological fungicide (MBI-110) to EPA. The broad spectrum Read More
Crop InputsWeed Expert: Adding A Second Herbicide Not Always Easy
February 9, 2016
In my last post, I reviewed some recent research that suggests one of the best ways to delay the evolution Read More
Crop InputsGenetic Literacy Project: Farmers Need More Herbicide C…
February 9, 2016
There are two things that I think just about every weed scientist can agree on, writes Andrew Kniss for The Read More
HerbicidesWeed Expert Warns North Dakota Growers Of Coming Herbic…
February 9, 2016
Ford Baldwin painted a bleak picture of weed control at a recent workshop here exploring the future of ag production, Read More
HerbicidesWSSA Announces New, Updated Free Web Resources
February 9, 2016
Today the Weed Science Society of American (WSSA) announced that new and updated educational materials for both weed scientists and Read More
Soybean field
FungicidesFour Arysta Fungicide Formulations Given FIFRA Approval…
February 8, 2016
Arysta LifeScience North America recently announced the issuance of Federal Insecticide, Fungicide, and Rodenticide Act (FIFRA) Section 2(ee) Recommendations for Read More
FungicidesAgri-Fos Systemic Fungicide Plus Receives EPA Registrat…
February 8, 2016
Vivid Life Sciences has announced the EPA registration of Agri-Fos Systemic Fungicide Plus, a highly concentrated active ingredient phosphite fungicide, Read More
Crop InputsBayer Contests EPA’s Decision On Valuable Insecticide F…
February 5, 2016
Crop Science, a division of Bayer, has announced it has refused a request by the Environmental Protection Agency (EPA) to Read More
Wheat Field North Dakota
Seed/BiotechSyngenta Wins Seed Fraud Suit Against South Dakota Grow…
February 5, 2016
Syngenta has obtained a $25,000 settlement from Paul and John Mayclin, Mayclin Farms, Plankinton, SD, in response to their Plant Read More
ManagementOABA Annual Conference Wraps Up In Columbus
February 5, 2016
More than 300 Ohio AgriBusiness Association (OABA) members and industry professionals were on hand to engage in collaborative learning and Read More