Tag Archives: Pest Management

Ginseng Crop Update – Pre-Plant Nematode Management – June 24, 2020

Ginseng Crop Update Alternaria remains the biggest challenge for most growers. The problem stems from freeze damage/stunting in May and ideal weather conditions for Alternaria – hot and dry with long dew periods. With insufficient rains over the past few … Continue reading

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Bioceres WP Registered for Use on Greenhouse-Grown Mint and Additional Greenhouse Crops

By: Jim Chaput, OMAFRA, Minor Use Coordinator, Guelph The Pest Management Regulatory Agency (PMRA) recently announced the approval of a minor use label expansion registration for Bioceres WP Biological Mycoinsecticide for reduction in numbers of whiteflies, aphids and thrips on … Continue reading

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Lavender Harvest Timing – Lavender Crop Update June 12, 2020

Crop Update Insect activity in lavender has increased, with four-lined plant bug and spittlebugs being the biggest issues. Four-lined plant bugs are in the late nymph (Figure 1) or adult (Figure 2) stages. Look for pale red nymphs with black … Continue reading

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Ginseng Crop Update – Alternaria Management – June 5, 2020

With ginseng plants stressed from prolonged cold and/or freeze damage in many fields, they are more susceptible to foliar diseases including Botrytis and Alternaria leaf blights. Combined with ideal warm, dry and humid conditions for Alternaria, the risk of Alternaria … Continue reading

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They’re back!! Gypsy moths invade hazelnuts (and lots of other things)

I’ve had quite a few questions about little black caterpillars on hazelnuts this week. These guys are gypsy moth caterpillars, which were quite a problem in many Ontario hazelnut orchards last summer. Gypsy moths overwinter as egg masses on tree … Continue reading

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Ginseng Crop Update – Protecting Frost Damaged Plants – May 13, 2020

Varying amounts of damage from the past week’s freeze and snow events are being reported depending on the low temperatures in the area, how emerged the crop is, whether row covers were put on the crop, and how much snow … Continue reading

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