Will tank mixing pesticides give you better efficacy? Save you money? Can tank mixing HURT your crop in any way? How do you know if two products are compatible? And, how do you know if you’re legally ALLOWED to tank mix two products?
This post covers all these questions and more, with some great links to other resources to boot!
This article was written by Jason Deveau (OMAFRA Application Technology Specialist) and Mike Cowbrough (OMAFRA Weed Management Specialist – Field Crops). The original post can be viewed on the Sprayers 101 website. New guidance on Health Canada’s federal tank mixing policy can be found here.
We’ve written before about the National Protected Agriculture Standard and what it means for greenhouse floriculture growers. The standard, which is administered by CropLife Canada, comes into effect January 1, 2024. The goal is to keep plant protection products where they are applied.
In order to purchase pesticides going forward, your farm will need to be certified under the program as of January 1, 2024. All greenhouse growers who self-identify as having a recirculating (closed-loop) irrigation system need to register and complete an audit by December 31, 2023 to be certified. Open system growers will need to obtain an exemption in order to continue purchasing products. Greenhouse grown cut flowers and hoop houses that do not recirculate their water are currently out of scope, but they will be added to the standard in the near future.
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.
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.
Over the last several years, CropLife Canada and various grower groups have been working to develop a certification program for greenhouses and other protected agriculture producers to reduce the risk of nutrients and pest management products leaving the farm with irrigation water. This work was initiated after imidacloprid was found in high levels in some waterways in Ontario and British Columbia. A draft was released in 2020 for public consultation, and feedback has been incorporated into the latest draft which is now available for comment.
The first stage of the proposed water standard affects greenhouse producers who have recirculating irrigation systems. All growers who self-identify as having a closed-loop irrigation system will need to have passed an audit by December 31, 2023. You can find details on the specific definition of closed-loop in the proposed standard, but generally it includes growers with recirculating systems such as flood floors, flood benches and troughs. All greenhouse growers with these irrigation systems will need to be certified under the program – by successfully completing an audit, or by completing a self declaration indicating that their farm has an open irrigation system– by December 31, 2023. If a farm has not taken either of these measures, they may be prevented from purchasing pesticides for use in their greenhouses.
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.
T’is poinsettia sticking season once again, and the question always comes down to the same thing: do I use chemicals to control Bemisia whitefly and hope it works this year? Or do I switch to biological control? Here we show some head to head comparisons that can help you decide.
An in-depth discussion of this topic was also captured by MSU’s “Bug Bites” last year, and I’ve included the video below.