Tag Archives: Diseases

Pest Control Product Changes for Ginseng for the 2021 Growing Season

With a new season beginning, growers are starting to apply products for disease control on ginseng. Here are the changes in pest control products since last spring. Nematode Control Velum Prime (fluopyram) is now registered for control of soil dwelling/root … Continue reading

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Downy Mildew Identified on Hemp (Cannabis sativa) in Southwestern Ontario

By: Amy Fang Shi, Sean Westerveld, Jim Todd and Melanie Filotas Downy mildew of hemp (also known as cannabis downy mildew) has been identified in multiple hemp fields in southwestern Ontario. The disease first appeared in early September and was … Continue reading

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Ginseng Crop Update – Dealing with Early Senescence, August 28, 2020

Given the major stresses experienced by the ginseng crop this year, including early frost damage, hot and dry conditions, and high Alternaria pressures, many gardens are senescing early this year. There are a few things to consider for proper management … Continue reading

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Miravis Duo Fungicide Registered for Use on Ginseng and Hazelnut

Syngenta Canada has recently announced that the Miravis Duo fungicide label has been expanded to include the control of Alternaria blight of ginseng and eastern filbert blight of hazelnut, in addition to many other horticultural crops. Miravis Duo consists of … Continue reading

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Basil Downy Mildew Confirmed in Ontario – July 28, 2020

Basil downy mildew has been confirmed in a home garden in Norfolk County. The symptoms first appeared in the past days, which means infection probably occurred over a week ago. It is likely that the disease is present in most … Continue reading

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Fungicide Resistance in Alternaria? Ginseng Crop Update July 17, 2020

With the persistent heat and dry conditions so far this summer, ginseng is stressed, and root development will be reduced. These conditions are also ideal for Alternaria development and spread. As a result, problems with Alternaria are continuing in many … Continue reading

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