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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My Soybeans are Wilting

In Ontario there are many root/stem diseases which cause wilting symptoms in soybeans.  With the hot, dry conditions this year over much of the province some of these diseases such as stem canker, Fusarium wilt, charcoal rot have taken advantaged of the additional stress. Fusarium wilt or blight of soybeans can affect soybeans at any […]

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Fungicide Efficacy for Control of Corn Diseases in Ontario (Corn Disease Working Group)

The hot, dry weather conditions to date have not been very conducive to foliar leaf diseases across most of the province.  In most cases, besides high relative humidity, prolonged wet conditions on the leaves are necessary for infection but only under favourable temperatures (16-30oC).  What has started to show recently in the southwest are the […]

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