Drone Tendering – Considerations before Buying or Building

Acknowledgments Much of this article is based on a session and tradeshow I attended at the 2026 Drone End-User Conference in Kansas City. I want to acknowledge the insightful information provided by the three session speakers, as well as the ~200 audience members that asked honest questions and shared their experiences. The speakers were Mr. […]

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The Carvalho Boom and the Stages of Quadcopter Flight

The Hypothesis The results of a recent herbicide deposition study performed with the DJI T100 led us to observe that after ~13 m/s, swath width and drift were no longer directly related to travel speed; They appeared unaffected. The result was completely unexpected as it was counter to several years of prior study with smaller […]

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

“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 […]

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

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 […]

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

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 […]

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