Tag Archives: Diseases

Fall Considerations for Lavender

Summer is winding down, but vegetative growth of the lavender will continue for another month or more. This is a critical time for lavender when it has recovered from flowering in July and is now putting on new growth that … Continue reading

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Basil Downy Mildew Confirmed in Ontario – July 31, 2019

Basil downy mildew has been identified in Norfolk and Prince Edward Counties in Ontario and is likely to be present elsewhere over the next week. Basil downy mildew is a highly destructive disease that can completely defoliate a plant within … Continue reading

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Managing Multiple Diseases at Once in Ginseng – Crop Update, June 20, 2019

This has been a challenging year for disease management in ginseng. In addition to the earlier issues with root diseases, especially Phytophthora, we are now dealing with high pressures of Alternaria (Figure 1) and Botrytis (Figure 2). It can be … Continue reading

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Managing Phytophthora Leaf Blight – Ginseng Crop Update – May 31, 2019

The persistent wet and cool conditions have resulted in very high risk of foliar Phytophthora. After the wet conditions last fall and this spring, there is a high amount of inoculum of Phytophthora in low areas in most gardens. When … Continue reading

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Fumigation Best Practices for Ginseng

This is the time of year ginseng growers prepare new land for fumigation. Based on the numerous trials OGGA and OMAFRA have conducted over the past 8 years on fumigation, proper preparation and sealing of the fumigant into the soil … Continue reading

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Early Season Management of Phytophthora in Ginseng

After a very wet late summer and fall last year, Phytophthora root rot probably had a chance to spread within low areas of ginseng gardens. Combined with the wet conditions we are currently experiencing, management of Phytophthora leaf blight and … Continue reading

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Apron Maxx RTA Seed Treatment Registered for Use on Ginseng

The Pest Management Regulatory Agency (PMRA) recently announced the approval of an URMULE registration for Apron Maxx RTA seed treatment for the control of seed rot/pre-emergence damping-off, post-emergence damping-off and seedling blight caused by Fusarium spp., Pythium spp., and Rhizoctonia … Continue reading

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