
Jason DeVoe
Dr. Jason Deveau ("Spray Guy"), OMAFA Application Technology Specialist since 2008 and co-administrator of Sprayers 101, researching safe and effective agricultural spray application.
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Jul 11, 2026
Visiting experts target spray accuracy
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Scott ChampionHOST
And for both of you in terms of your experience and the things that you see in a Canadian context, what are some of the things that farmers aren't doing well, might need to think more carefully about, and some of the things that you might be talking about in that context when you come to New Zealand?

Jason DeVoeGUEST
It's almost overwhelming how much choice a grower has today in doing an application.

Jason DeVoeGUEST
A lot of the big questions we get on the website is what nozzle do I use? And it's such a loaded question because there are new nozzles all the time and they all claim to be the greatest and best.

Jason DeVoeGUEST
What a grower can do better is seek out this information, be open minded to new ways of doing things and studying what each of these variables do to the spray job.

Jason DeVoeGUEST
So we could be discussing the right nozzle for the situation and recognizing that not one nozzle can do everything.
Speed, volume, and swath width — can drones hit the target on the farm?
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Jason DeVoeGUEST
We know that the things that an operator can control, things like speed, altitude, how much water they use, droplet size, we're beginning to get a good idea how that affects coverage.

Jason DeVoeGUEST
But again, with this new drone and its ability to fly faster, it's kind of a go back to start and review.

Jason DeVoeGUEST
We've already done some really fun spraying in the snow, you wouldn't think, but we're spraying dye and seeing where the spray landed.

Jason DeVoeGUEST
Just a couple of weeks ago, we did speed trials and we did multiple speeds to figure out what does that do to swath width.