Good Mycotoxin Test Begins With A “Representative” Sample!

Good Mycotoxin Test Begins With A “Representative” Sample! The importance of collecting a “representative” sample cannot be overestimated. The most significant variable associated with mycotoxin test results comes from incorrect sample collection or uneven distribution of infected kernels in load (Figure 1). Although taking a sample from the top of a storage bin, truck or […]

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2018 Grain Corn Ear Mould and Vomitoxin (DON) Survey

Co-authored with Albert Tenuta, Field  Crop Pathologist, OMAFRA OMAFRA field crop staff in collaboration with the Grain Farmers of Ontario (GFO) and members of the Ontario Agri-Business Association (OABA) have completed the annual Provincial corn ear mould and mycotoxin survey. Corn ear moulds such as Gibberella and their corresponding mycotoxins occur every year in Ontario. […]

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2017 Grain Corn Ear Mould and Vomitoxin (DON) Survey

Co-Authored with Albert Tenuta, Field Crop Pathologist, OMAFRA OMAFRA field crop staff with the assistance from members of the Ontario Agri-Business Association (OABA) have completed the annual Provincial corn ear mould and mycotoxin survey. These mycotoxins, particularly vomitoxin (DON) produced primarily by Gibberella/Fusarium ear moulds can be disruptive when fed to livestock, especially hogs. The […]

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Wheat Fungicide Decision Tree for Fusarium Head Blight and Stripe Rust

The when, what and where of wheat leaf and Fusarium head blight (head scab) disease management Martin Chilvers and Martin Nagelkirk, Michigan State University; Albert Tenuta, OMAFRA; Damon Smith, University of Wisconsin-Madison; Kiersten Wise, Purdue University; Pierce Paul, The Ohio State University Wheat leaf diseases such as powdery mildew, Septoria leaf spot and stripe rust […]

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Soybean Disease Identification Resources

The following scouting guides for disease identification in soybean are available for download by clicking on the headings below. Scouting for common soybean seed diseases Scouting for common soybean stem diseases Soybean vein necrosis virus Charcoal Rot White Mould Stem Canker Pod and Stem Blight and Phomopsis Seed Decay Soybean seedling diseases and disorders Scouting […]

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Identifying Rust Diseases of Wheat and Barley Publication

Stripe rust symptoms are increasing in the southwest this week and the following publication  “Identifying Rust Diseases in Ontario”  is a good resource to distinguish between stripe, leaf and stem rust.  This publication was developed by the multi-state and OMAFRA extension and research committees for small grain diseases, NCERA-184 & WERA-97 with support from the Grain […]

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Integrated Fusarium head blight management: Employing all the tools

Fusarium head blight continues to be of significant economic concern in Ontario as well as other provinces. Although new tools have helped, it is not realistic to expect a single cultural or management practice to effectively manage this devastating disease alone. The integration of the various cultural or management practices (“tools”) into a coordinated FHB […]

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2014 Grain Corn Ear Mould and Vomitoxin Survey

Greg Stewart, OMAFRA Corn Specialist Albert Tenuta, OMAFRA Field Crop Pathologist The OMAFRA Field Crops team has completed the survey of the 2014 Ontario corn crop to determine ear mould incidence and the occurrence of mycotoxins in the grain. These mycotoxins, particularly vomitoxin (DON) produced primarily by Gibberella/Fusarium ear moulds, are grading factors and can […]

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Should You Apply a Fungicide for Sclerotinia in Canola

This spring’s challenging planting conditions has resulted in quite a few of uneven canola stands with both reduced  populations and delayed emergence. This has  some growers weighing the merits of applying a fungicide this season.  Sclerotinia incidence varies greatly between fields and years thus making routine spraying of fungicide unprofitable. However when the risk of […]

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