A new pesticide is available for greenhouse ornamental production in Canada that has shown potential for effective suppression of difficult-to-control thrips and whitefly species.
But to keep this new tool effective, growers will have to use this chemical wisely. Keep reading for efficacy data on ornamental crops and best management practices for incorporating this chemical into your IPM toolbox.
Continue reading “New Chemical Control Option for Thrips and Whitefly”
With the holiday season over, it’s time to turn our attention to Spring bedding crops. Although here for a brief window, the diversity of these crops means you’re bound to encounter some sort of disease and insect problems.
One way you can head off issues is to plan and prepare now. This post has important tips on sanitation for common spring crop diseases, dips and early sprays to prevent key pests, as well as tips on where to spend your biocontrol dollars.
Continue reading “Preventing Issues in Your Spring Crops: Sanitation, Dips and Bio Tips.”
It’s that time of year again where two of our biggest crops cross over: fall pot mums and poinsettia. This means growers have to simultaneously keep an eye on the two biggest pests in the industry: thrips (usually western flower thrips) and Bemisia whitefly.
Here’s how things are shaping up with these pests and where they might be going.
Continue reading “What you NEED TO KNOW about Thrips and Whitefly Control: September Update”
This post was contributed to by Drs. Sarah Jandricic and Chevonne Dayboll.
Summer is in full swing, and so too are garden mums. As you get ready for the next few months, here are a few tips to keep your crop on track.
Drip line irrigation can be a more efficient way of delivering water and nutrients to outdoor crops.
Irrigation method matters!
There are plenty of options for irrigation in potted outdoor crops, but not all are created equal if you are trying to maximize your water efficiency. Overhead irrigation by boom, or sprinkler is not efficient if your pots are not spaced tightly. Canopy sizes in the later months of production may make this impossible, especially if you choose to go with final spacing when pots first move outside. These methods of irrigation can also lead to pots that are too dry (not watered) or too wet (over watered). Plants can only use water that makes it into the pot, so low volume drip line or tape is a more effective way to delivering usable water to your outdoor crops.
Continue reading “Garden Mums – 2019 Production and Protection Tips”
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.
Up until this point, most of Ontario floriculture growers (and me!) assumed the only pest thrips we were dealing with was Western flower thrips (besides Echinothrips in a few crops like gerbera and poinsettia).
But a survey conducted in major commercial operations in 2016-2017, AND recent outbreaks of serious damage have proved us wrong. (You know what they say about assuming!). Keep reading to find out the truth about thrips! Continue reading “Which Thrips Are in Your Flower Crops: When Paradigms Shift (Part 1)”
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”
Weekly-mum producers have seen higher-than-normal spider mite levels coming in on cuttings from the U.S. recently. This might impact seasonal potted-mum growers as well.
Here’s some tips and tricks on two spotted spider mite control within a chrysanthemum IPM program.
Continue reading “LOOK OUT! Here comes the Spider Man! (Oops. I mean Mites. Spider mites. Sorry; way less exciting).”
For those of you that missed my webinar on “Thrips Control: from Propagation to Pocketbook”, it is now available for free on the Greenhouse Canada Magazine website.
Keep reading for more details and a link to the talk. Continue reading “Webinar Detailing Thrips Control Strategies Now on the Web.”
Fig. 1. Leaf mines on gerbera leaves.
As much as we all hate thrips, there are, frankly, worse problems to have. And it’s name is Leafminer. These flies cause just about the ugliest damage we see in floriculture (Fig. 1), and they have incredible pesticide-resistance capabilities. Outbreaks seem to go in cycles, and I’ve had quite a few gerbera and mum crops come across my desk with leafminer this past 2 weeks.
This post covers chemical options (BawHawHawHa!!! Oh… Sorry… I’ll get myself under control now) and non-chemical options for leafminer, as well as how their control fits into the big picture in greenhouse IPM programs.