Jason Deveau (Spray Guy)

Wanted: A new technology for assessing spray coverage (The Spray Doctor – Part 1)

Posted on January 23, 2026 (January 23, 2026)

“If you can’t measure it, you can’t improve it”. While the source is nebulous (Peter Drucker, Lord Kelvin, or Antoine-Augustin Cournot), the sentiment is clear. The status quo In the world of crop protection, considerable resources are expended to distribute a pesticide over a target. And yet, sprayer operational settings and spray coverage are rarely […]

Crop-Adapted Spraying in Highbush Blueberry: Nine years of pesticide savings

Posted on January 6, 2026 (January 8, 2026)

This case study is taking place on a 15 acre highbush blueberry operation in southern Ontario. In 2016, considerable pressure from spotted-wing drosophila (SWD) prompted the growers to make changes to their crop management practices and their spray program. They employed a three-pronged approach to improving crop protection: We have been tracking pesticide use, water […]

The Micothon M2 – The benefit of air-assist spraying in a vegetable greenhouse

Posted on December 8, 2025 (December 10, 2025)

I’ve experienced a few spectacular failures trying to build niche sprayers. Until now, I haven’t had a reason to write much about them. But I decided the contrast, and confession, would be a fun way to set the scene for a discussion about an excellent niche sprayer. Failed Attempts First, the ill-fated “Hops Sprayer”. We […]

Canada Gazette Part II – Recent and upcoming changes to Canadian rules for operating Remote Piloted Aerial Systems

Posted on November 27, 2025 (November 28, 2025)

Editor’s Note: This article was posted in June 2025, and as of November 4th all rules have now come into effect. Summary The Government of Canada introduced the first set of Remote Piloted Aerial Systems (RPAS) rules in 2019, which addressed safety concerns and created a flexible and predictable environment for small RPAS flown within […]

Exploring the accuracy of drone-applied herbicide treatments

Posted on November 4, 2025 (December 22, 2025)

Author’s note: Minor edits were made to this article on December 12, 2025. While the results remain unchanged, aspects of the interpretation have been adjusted upon reflection. In 2024, Corteva conducted a study entitled “Drone-Delivered Herbicides: Comparing Lontrel XC (Clopyralid) Efficacy Across Application Techniques and Water Volumes”. Their objective was to compare the relative efficacy […]