Tag Archives: ON floriculture

“Sticking” it to high populations of thrips in greenhouse crops.

You’ve likely noticed by now that thrips populations are especially high because of the hot, dry summer. Many growers are noticing their usual biocontrol programs can’t keep up, and further defenses are needed this year. The use of mass trapping strategies may be the … Continue reading

Posted in chrysanthemums, IPM tools, Mass trapping, On Farm Research, Pest control strategies, sticky tape, Thrips | Tagged , , , , , , , , , , , | Leave a comment

Ramping up thrips biocontrol BEFORE they get out of control!

Now that the warm weather is finally upon us, it’s time to start worrying about thrips control. What we’ve learned over the years is that pesticides just don’t cut it – the only reliable chemical for western flower thrips in Ontario is … Continue reading

Posted in biological control, biopesticides, chrysanthemums, Microbial products, Natural enemy interactions, Nematodes, Predatory mites, Preventative treatments, Thrips | Tagged , , , , , , , , , , , | 1 Comment

Can you safely mix nematodes and pesticides?

Entomopathogenic nematodes – used to control fungus gnats, shoreflies and thrips – are often a “gateway bio” into biocontrol use in greenhouses.  This is because not only are they effective and easy to use, but they’re generally compatible with insecticide … Continue reading

Posted in biological control, biopesticides, fungus gnats, IPM tools, Met52 insecticide, Natural enemy interactions, Nematodes, pesticides, Thrips | Tagged , , , , , , , | 1 Comment

Recognizing Cold Injury

The ice storm that passed through Ontario late last week may have disrupted more than just your travel plans.  If your power went out, and your generator didn’t kick on right away your greenhouse might have dipped in temperature overnight, … Continue reading

Posted in Climate, Greenhouse Environment | Tagged , , , , , , , | Leave a comment

Snack attack: how to help prevent your thrips bios from eating one another

Effective biocontrol programs for western flower thrips often use multiple natural enemies.  These include predatory mites like N. cucumeris or A. swirskii, but also  generalist predators like Atheta and Orius, which can feed on mite eggs and nymphs. So, how can you make sure your generalist … Continue reading

Posted in biological control, Natural enemy interactions, Predatory mites, Thrips | Tagged , , , , , , , , , , , , | 2 Comments

Managing Million Bells

By Sarah Jandricic and Chevonne Carlow It’s that time of year again, when baskets of Million Bells (Calibrachoa) are going up in the greenhouse.  Here’s how to deal with and prevent some of their most common issues. From a nutritional … Continue reading

Posted in Aphid control, Aphids, Black root rot, Calibrachoa, fungus gnats, iron deficiency, Spring crops, Thielaviopsis | Tagged , , , , , , , , , , , , | 6 Comments

Two new fungicide registrations!

That’s right!  As of today, flower growers have 2 new weapons against fungal diseases at their disposal. Heritage MAXX (azoxystrobin) and Medallion (fludioxonil) are now registered for use in outdoor and greenhouse ornamentals. Heritage (a Group 11 fungicide) is a systemic fungicide, … Continue reading

Posted in Fungal diseases, Fungicides, New Products, Registered pesticides | Tagged , , , , , , , , , , , , , , , , | 2 Comments