Battling Broad Mite in Spring Crops

Broad mite, Polyphagotarsonemus latus. Photo credit: USDA BARC

I’ve hearing a lot lately about Broad Mites (Polyphagotarsonemus latus) in spring crops, especially Reiger begonias and New Guinea impatiens. Other crops that are commonly affected include torenia, exacum, ipomea and gerbera.  

Broad mite are often difficult to detect and control. Read on for tips on monitoring and the latest management strategies for this pest.

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New Virus in Calibrachoa – Identification and Treatment.

Dark green and yellow mottling symptom on foliage. Photo by Heidi Lindberg, MSU Extension.

Several diagnostic labs in the Northeast U.S., as well as our own lab here at the University of Guelph, have received diseased calibrachoa suspected to have chili pepper mild mottle virus (CPMMoV). The supplier has alerted growers of this issue.

Although CPMMoV is NOT a regulated disease by CFIA or the USDA, it can still affect the quality of your crop and lead to losses.

Read on for a link to an excellent blog post on the topic written by Michigan State University Extension. This includes symptoms to look out for, the importance of testing, and what to do if you have it.

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Upcoming Webinar: Root Rots – What You Can’t See CAN Hurt you.

Its a busy time in the greenhouse, but our next topic is timely! Rot rots like Fusarium, Pythium and black root rot are often the bane of spring bedding crops. Dr. Mary Hausbeck, a Distinguished Professor from Michigan State University, is going to share her vast knowledge on this topic, including which fungicides work best. Check out the details below, and don’t forget to register!

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VRIC’s Pest Management Survey – It Counts!

Are you a Canadian greenhouse ornamental grower? Then the Vineland Research and Innovation Centre is currently looking for your feed back on your pest management practices. Whether you practice biocontrol or lean more heavily into chemical control, your answers help set benchmarks for where are industry is at, and help guide research needs.

The survey only takes about 15 minutes, and can be accessed here. The deadline for the survey has been extended to January 21st, and you can win $400 prize for completing it. (How often can you win money talking about bugs?!?!).

More information on the survey, including contact info, is below.

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Webinar this THURDAY: Making the Most of Spraying in Covered Crops (including Cannabis)

As anyone growing greenhouse vegetables, floriculture or cannabis crops knows, most pesticide application information out there is NOT geared towards covered crops. To help growers improve spray coverage and product efficacy of both conventional and microbial pesticides, Niagara College’s Cannabis Program has put together a webinar of experts. Together, they have over 100 years of combined pesticide application experience (*insert joke about how old they all are here*).

The panel includes both government and industry experts, including Dr. Jason Deveau from OMAFRA, Dr. Michael Brownbridge from BioWorks, and Louis Damm from the Dram Corporation. This webinar will focus on cannabis as a model crop, but much this information is highly applicable to floriculture as well.

Read on for information on this free webinar (no registration required).

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Missed Our Webinar on Strategies to Improve Spring Crops? View it Here!

If you missed our presentation by Dr. Neil Mattson (Cornell University) on November 18th, fear not! There’s a few ways to still watch his presentation!

You can either register for the original webinar here, which will then give you access to the recording on Zoom.

Or, you can check out the recording on our ONFloriculture YouTube Channel! An added bonus? By subscribing to the channel, you’ll always be notified when we post new videos. A direct link to Dr. Mattson’s talk can be found here.

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Can We Improve Pesticide Application in Greenhouse Ornamentals?

As anyone battelling whitefly on poinsettia this season can attest to, good pesticide coverage in ornamental crops can be challenging. Hydraulic sprayers are the industry standard, but does that mean they’re the best option? Where does sprayer technology need to go in the future to get growers better results?

This summer, Dr. Jason Deveau, OMAFRA’s official “Spray Guy”, and myself did a trial at a local greenhouse with some experimental equipment to try and answer these questions. The results were intriguing, to say the least.

For all the details on this trial, check out the link to Jason’s blog post, below.

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Missed our Webinar on Smart Sensors for Floriculture? Access the Recording On-Demand

Missed our latest Controlled Environmental Agriculture Webinar by Dr. Nemali? That’s OK. We recorded it for you!

Just register for the webinar using the link in the original posting, and you’ll have access to the recording right away. (Note there’s a few minutes of dead air in the recording – don’t worry! Exciting content starts at about the 2 minute mark.)

You can learn more about Dr. Nemali’s exciting research by checking out his CEA website!

You can also find the link to the webinar recording here:

https://zoom.us/webinar/register/WN_71KmGWbGQtKzGFae9tjVdA

OMAFRA CEA Webinar Series: Smart Sensors for Floriculture

Ever thought your plants were looking a little chlorotic, but didn’t want to waste time or money on tests? What if an smartphone app could tell you their nitrogen level? What if low cost sensors could help you monitor plant growth and tell you when PGRs are needed?

Having previously covered topics such as artificial intelligence and smart spraying, OMAFRA is continuing it’s CEA Webinar series, looking specifically at smart sensors. And they don’t have to be anything fancy to help you monitor your crop.

Although “floriculture” is in the title, the sensors and apps Dr. Krishna Nemali from Purdue University will discuss have applications across all avenues of controlled environment agriculture. Keep reading for details on the webinar, and how to register.

Knowing when to apply PGRs to crops like poinsettia is critical. A smart phone app could help make things easier with less staff training.
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Water Treatment: What System Should I Choose?

Water media filter in a greenhouse
Media filters can be an important step in water treatment: see this article in Greenhouse Grower.

This is the 6th article in a series about water sanitation. The goal of this series is to get you reflecting on your own irrigation system before a problem occurs. 

If you’re following our series on water sanitation, you saw that previous posts covered where problems are likely to occur in your greenhouse, the types of pathogens found in waterwhere and how to sample your water and getting and interpreting a DNA test for pathogens in your water.

This post covers water treatment options, and was written by C. Dayboll with input from Phytoserv and Soil Resource Group.

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