The scuttlebut on coffee row is that acidifying a spray mixture improves its efficacy. There are also claims that pesticides break down in the sprayer tank if the pH is too high. But it’s not that simple. Low pH has a strong impact on pesticide solubility, and that means mixing and cleanout are affected. Acidifying […]
It’s common advice: Test your water before using it as a spray carrier. You dutifully sample the well or dugout and await lab results. And what comes back is a whole lot of numbers. How to make sense of it all? All three of these tests report a large number of properties and identify specific […]
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Introduction Most operators assume drone swath widths are wide, stable, and predictable. That confidence generally comes from three places: But drones move through space and time; spray patterns evolve as they fly. What you think is happening in the two seconds you glance up is not what’s happening over a 50 metre pass. The following […]
Read More… from The Hidden Shape of a Drone’s Spray Swath: What 2-D Imagery Reveals
Introduction We conducted a series of drone deposition studies with three main objectives: We wanted to: The four swath width measurement methods were: Assuming a trapezoidal-shaped spray swath, the Effective Swath Width (ESW) can be roughly defined as the span between two points that represent 1/2 of the average maximum deposit density. The idea is […]
In the summer of 2025, Todd Frey of Clean Field Services (Drayton, Ontario) and I participated in the Elora Weeds Tour. We discussed his new John Deere See & Spray Premium and the practical considerations for implementing green‑on‑green spraying in Ontario (Figure 1). With that first season squarely in the rearview mirror, I reached out […]
Read More… from Green-on-Green in Ontario: A Custom Operator’s Experience with See & Spray Premium