Welcome to Sprayers 101
Sprayers 101 is a non-profit resource describing best practices in safe, efficient and effective agricultural spraying. The site is based in Canada with content freely contributed by international authors. Browse our library of articles, videos, presentations, apps, calculators, tables and ePubs. Happy Spraying!
Our most recent articles:
The Hidden Shape of a Drone’s Spray Swath: What 2-D Imagery Reveals
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…
Droplet trajectories from rotary spray drone application: Implications for swath width measurements
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…
Green-on-Green in Ontario: A Custom Operator’s Experience with See & Spray Premium
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…
Past articles you might like:
Avoiding Skips from PWM Sprayers
Does this sound familiar? “This year was the first year we used a growth regulator on our wheat. After heading, we noticed a wavy pattern of different plant heights between 30 and 45° to the operating direction. It was only a couple inches difference and was difficult to photograph. We sprayed 12 gpa at 9…
Recirculating Boom Options
If you read this site, you know we’re fans of recirculating booms. We love them for three reasons: If you’re new to the concept of recirculating booms, read more here. Until recently, these booms were only available on sprayers imported from outside North America (Horsch, Amazone, Agrifac to mention three), or via France’s Pommier booms…
Installing a Continuous Rinse System
Cleaning, flushing, triple-rinsing… whatever you call it, sprayer sanitation is a time-consuming and distasteful task. Methods vary, but they generally span from the classic triple rinse (30-45 minutes) to a full tear-down and decontamination (many hours and likely an overnight soak). The operator decides how much time and effort to invest depending on the chemistry they’ve…