IPM Scout Training Workshops Begin This Week

The free OMAFRA IPM scout training workshops are available for those who will be scouting horticultural crops this year. Be sure to register if you or your scout are planning to attend!

To register, please contact OMAFRA’s Agricultural Information Contact Centre at 1-877-424-1300 or ag.info.omafra@ontario.ca. Continue reading

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Fire Blight Prediction Maps for 2017

Michael Celetti, OMAFRA’s Plant Pathologist – Horticulture, is once again creating fire blight prediction maps based off the Cougar Blight forecasting model using over 70 weather stations across the province. These will be updated every Monday, Wednesday and Friday until the end of bloom and will be posted on the OMAFRA website. Continue reading

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Activity of Fungicides on Grape Diseases, 2017

This table provides information on the relative activity of fungicides registered on grapes.

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Important Information Regarding the Sale and Use of Gramoxone Herbicide

Health Canada’s Pest Management Regulatory Agency (PMRA) recently conducted a Special Review of Paraquat and concluded that changes to the Gramoxone® Liquid Herbicide with Wetting Agent, Reg. No. 8661   (i.e. “Gramoxone”) product formulation and packaging are required. As a result of this decision, a phase-out of the current product is being implemented.

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Resources on weed management

ONvegetables

Kristen Obeid, OMAFRA Weed Specialist – Horticulture

Internet

weedinfo.caWeedinfo.ca: If you are trying to identify a weed, find the newest information on herbicide resistance and other emerging issues in weed management you need to visit weedinfo.ca.

Provincial Weed Page:http://www.omafra.gov.on.ca/english/crops/insects/weeds.html

Ontario Crop IPM: Know how and why it is important to scout and identify weeds, as well as diagnose herbicide injury.

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Chloropicrin 100 and Pic Plus Fumigant Labels Expanded via Minor Use Program for Control of Nematodes and Soil Borne Pests on Additional Crops in Canada

J. Chaput, OMAFRA, Minor Use Coordinator, Guelph

The Pest Management Regulatory Agency (PMRA) recently announced the approval of URMULE registrations for Chloropicrin 100 Liquid Soil Fumigant and Pic Plus Fumigant for control of root knot and root lesion nematodes and soil-borne diseases caused by Phytophthora spp., Fusarium spp., Pythium spp., and Thielaviopsis spp. in fields to be planted to bulb vegetables, cucurbit vegetables, pome fruit, stone fruit, forest nurseries and outdoor ornamentals in Canada. Chloropicrin 100 Liquid Soil Fumigant and Pic Plus Fumigant were already labeled for use on a number of crops in Canada for control of nematodes and soil-borne diseases. Continue reading

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Apple Disease Management: Part One – Early Season (Green Tip to Tight Cluster)

With the very spring-like temperatures, apple buds are moving along quickly. Most areas of the province are seeing green tip in earlier varieties, while some regions are already at ½” green. If protectant fungicides haven’t gone on yet, now would be an ideal time, especially in anticipation of the forecasted wet weather over the long weekend.

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