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Mandevilla IPM Program Part 4: Putting Together a Cheaper Spray Program

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Fig. 1. Mandevilla plants showing minimal Parvispinus damage due to effective spray programs in Ontario. Photo by OMAFA. This last post in this series summarizes the strategy behind the spray program for Thrips parvispinus control in mandevilla in Ontario. After several years of refinement to bring down costs while maintaining efficacy, several growers have been using this program, or some version of it, for several years. This program focuses on critical “spray periods” versus weekly spraying, and takes advantage of spot sprays, focusing on sensitive varieties . That we’ve found a successful and economical program in mandevilla is quite an achievement, given the lower number of pesticide available for this pest in Canada versus the U.S ., and the long growth period of the crop (July – April). Read on for how we’ve put this all together through trial and error, and for cost comparisons to more traditional spray programs. Criti...

September 2026, DLI Report

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Did you notice lower light levels in September in the Vineland and Leamington-Kingsville areas? So did we, so read on to find out more! Only looking for certain information? Use the table of contents to navigate between sections: Summary Background Objectives Materials and Methods DLI Data DLI and PPFD Excel Sheets Contact Us Summary Vineland and Leamington-Kingsville experienced less light in weeks 37 and 38 than the same time last year. Overall, the average DLI for the month of ­­­­­September for Leamington-Kingsville was 30 moles/m 2 /day. This was 32% less than September, 2025 and 23% less than September, 2024. In fact, September 2026 light levels were similar to those in October of last year. The maximum DLI was 53 recorded on September 9 th , and the minimum DLI was 10 recorded on September 21 th . For the first time since we started monitoring light levels in Vineland last year, it received more light than Leamington-Kingsville, 20% more to be ...

Free workshops on Spotted Lanternfly in Niagara Next Week!

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A version of this post was originally posted on the ONnurserycrops.com blog, written by Cassie Russell. Landscape Ontario and OMAFA are partnering to provide two more FREE Spotted Lanternfly workshops this fall. The first will be in Niagara next week. The next will be in the Windsor area in November. Have burning questions about SLF? Not sure how SLF may affect your green industry business or clients? Come attend the workshops. Continue reading for details. What Will I Learn In This Workshop? This free hands-on workshop will provide you with the confidence to correctly identify all life stages of SLF, how to look for it in the landscape, knowledge of current management practices, plus how to report this new invasive pest if you see it. The workshop is relevant for garden centre and nursery staff, landscapers, arborists, grounds maintenance, municipalities, and all green industry personnel. Session #1: Niagara Area October 21st, 10:00 AM Rittenhouse...

Second Intake of the Food Safety and Growth Initiative Opens October 19th, 2026 to March 1st, 2027

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The governments of Ontario and Canada are offering $2 million to small businesses to improve their food safety programs. Are you a grower who produces ready-to-eat minimally processed fruit and vegetables and/or ready-to-eat bagged salads, leafy greens, or herbs? If so, you may be eligible. Read on for program details and key dates. Purpose Eligibility Applicant Eligibility Project Eligibility Funding Available Key Dates Purpose The purpose of the Food Safety and Growth Initiative Intake 2 is to stimulate sector growth by enabling eligible small agri-food businesses to strengthen their food safety and traceability systems , promoting public trust. The initiative supports risk mitigation and resiliency, allowing businesses to respond to market demands and improve their competitiveness. Funding for the Initiative comes from the Sustainable Canadian Agricultural Partnership (Sustainable CAP). Up to $2 million has been allocated for the Initiative. Eligibi...

Thrips parvispinus Webinar 3: Attacking Parvi from All Sides

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IPM Staff at a local greenhouse inspecting mandevilla flowers for Parvi. This post was written by Jessie deHaan (Research Technician, Vineland Research and Innovation Centre) and Dr. Sarah Jandricic (Greenhouse Floriculture Specialist, OMAFA). Part 1 of the three-part webinar series on Thrips parvispinus focused on controlling incoming thrips on cuttings, while Part 2 shared the interesting behaviour and ecology that we’ve learned about Thrips parvispinus (Parvi) that could help us better manage this pest. The final webinar is all about exploring Parvi IPM in greenhouse trials. Combining biologicals, chemical applications and other IPM interventions throughout plant production may help give you the best footing against Parvi – and other concurrent pests – while avoiding pesticide resistance. Read on for the link to the webinar and for our written summary. FCG Parvispinus Webinar 3: Recorded July 2026 Are All Parvi Made Equal? Biocontrol Control Tests Ag...