Ear Mould in Corn – Update

corn mould

2009 Cladosporium mould


Contributed by NK Sales & Agronomy Lead, Deb Campbell
The blue-green mould I have seen in fields in the past few days has actually been confirmed as Cladosporium Ear Rot by the University of Guelph Diagnostic Lab. It is not Penicillium as first diagnosed although I still believe this one is present too. Cladosporium mould is quite common on insect, hail or frost damaged corn. Mycotoxins are not associated with this pathogen however several ear moulds are common in fields this year and mould levels are increasing as harvest is delayed. Bottom-line, harvest as soon as possible and dry your grain and test for toxins if you are feeding this grain. High moisture corn stored at 26% is at risk for mould levels to continue to increase in storage. Likewise, wet storage bins and temporary corn piles in yards should be dried immediately. I have attached a link to some related information from the US they are battling the same challenge in their harvest.
How Delayed Harvest Might Affect Ear Rots and Mycotoxin Contamination?
2009 Corn Quality Issues – Field Molds
2009 Corn Quality Issues – Storage Management
2009 Corn Quality Issues

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One Response

  1. Great article about ADM and vomitoxin in the US
    http://www.reuters.com/article/marketsNews/idUSN1919324020091119

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