Which Thrips are in Your Flower Crops (Part II): How to ID and Control Onion Thrips

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Thrips tabaci, or Onion thrips. Photo courtesy of Thrips-ID.com.

If you were at the Canadian Greenhouse Conference (or are regularly reading this blog!) you’d know we’ve recently identified Onion thrips as a pest of floriculture crops in Ontario (see this post).

Outside of Ontario?  Well, this still may apply to you, as a recent study in France also indicated that up to 47% of pest thrips in floriculture greenhouses were Onion thrips.  So, this issue could be wide-spread.

My last post covered the extent of the problem in Ontario’s industry.  This post will help you identify if YOU are dealing with Onion thrips (OT) along with Western flower thrips (WFT), and what to do about it.

 

Continue reading “Which Thrips are in Your Flower Crops (Part II): How to ID and Control Onion Thrips”

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Worried About Whitefly? Control Strategies in Poinsettia for 2018.

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Bemisia whitefly (Bemisia tabaca) adults on poinsettia.  In high pressure years, poinsettia plants can quickly become unsellable due to this pest.

The floriculture industry in Ontario seems to have mostly avoided heavy aphid AND thrips pressure this spring/summer.  But from everything I’ve been hearing, we are NOT going to be that lucky with whitefly on poinsettia this year.

 

This  post goes over preventative measures that should be taken as soon as cuttings come in the door, biocontrol programs for whitefly on poinsettia, and WHEN and WHAT to spray for this so you can avoid resistance issues.

Continue reading “Worried About Whitefly? Control Strategies in Poinsettia for 2018.”

May IPM Refresher: Effectively Controlling Thrips in Mums

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IPM in potted mums can be challenging at times, but Ontario has lots of strategies for  thrips control in this crop.

New to a thrips biological control program for  chrysanthemums, or just need a refresher on the most effective strategies currently being used in the industry?  Then watching the Greenhouse Canada Webinar, “Tips for Thrips Control: From Propagation to Pocketbook” is a good place to start.

Keep reading for the webinar link and some chrsysanthemum IPM tips for 2018.

Continue reading “May IPM Refresher: Effectively Controlling Thrips in Mums”

Reminder: VRIC survey on IPM use, needs and gaps due April 6.

VRIC designing GH IPM programJust a friendly reminder that the Vineland Research and Innovation Centre’s survey on pest management concerns and needs in the Canadian greenhouse industry needs to be filled out by this Friday (April 6).

This survey guides applied research and helps set industry priorities, which is why your input is so important.

What happens if you don’t fill it out?  

One of the lovey scientists from VRIC is likely going to call you, that’s what.  And if you’re anything like me, I’d MUCH rather fill out an online form when it’s convenient for ME, rather than take the time to go over questions on the phone.

To take the survey, click back to the original blog post here, and follow the instructions.

 

New IPM survey will help focus research and products for growers

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We need to pick your brain!

Let’s face it; it can feel like there’s never enough time in the day.  Extra tasks (even those that only take a few minutes) can seem impossible to squeeze in.  Especially this time of year.

But some tasks that seem annoying now can have a big payoff in the future. Because if researchers, extension agents and industry groups know exactly what you need to be successful, we can help make these things a reality.

The Vineland Research and Innovation Centre has recently taken up the rather thankless job of conducting a survey on pest management implementation and needs in the greenhouse industry.

Why is this a necessary evil? Because it gives them (and us) information on:

  • Pests to focus research on
  • Where pest management dollars are being spent, and where programs can be refined
  • Pest management needs in the industry (here’s your chance to indicate specific pesticides or bios you’d like to see available!)
  • How best to reach growers with new information

I encourage you all to click “Read More” on this blog post and follow the link to the survey BEFORE April 6, 2018.  Below I have detailed the kinds of information you’ll need at your fingertips to help make taking it go a bit more smoothly.

Continue reading “New IPM survey will help focus research and products for growers”

Christmas in July: tips for controlling whitefly in poinsettia. (Hint – start now!).

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Juvenile and adult Bemisia whitefly (Bemisia tabaci).  There are 2 biotypes of this pest (“B” and “Q”) which look identical; however, their response to chemicals is very different.

Poinsettias cuttings are here! Unfortunately, they will likely arrive with unwanted “presents” in tow.  This includes Bemisia whitefly, a pest that can be hard to control with natural enemies and can ALSO be resistant to pesticides.  So what’s a grower to do?  

By implementing some preventative measures RIGHT NOW, and understanding WHEN it’s appropriate to spray, you can help save yourself a lot of headaches later.

Continue reading “Christmas in July: tips for controlling whitefly in poinsettia. (Hint – start now!).”