Airblast calibration – clearing up confusion

Here are some nasty disc & cores revealed during a calibration workshop. It certainly explained the poor performance the operator was complaining about. Is it time to replace yours? Photo credit – Dr. H. Zhu, Ohio.

“Sprayer calibration is an important part of any crop protection program.” Everyone says so, so it must be important. But what exactly are they asking you to do, and why? When delivering presentations I often take the opportunity to ask audiences to define airblast sprayer calibration. Their responses cover a wide range of activities that […]

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Airblast travel speed

Here, in no particular order, are the most common airblast-related questions: What nozzles should I use? How do I adjust my air settings? How much volume should I use? How fast should I drive? The first three questions have long answers that are covered throughout the website and in Airblast101. Travel speed, however, is easy: […]

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Validate airblast output – nozzle calibration

The SpotOn SC-4 calibration vessel is much easier, faster and more accurate than the classic pitcher-and-stopwatch approach to timed output tests.

Sprayer math is important. It ensures the operator applies the correct product rate and has enough to complete the job. But, it assumes the airblast sprayer is behaving as expected… and it often doesn’t. After confirming the airblast travel speed, use one of the following methods to assess sprayer output. There are pros and cons […]

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Sprayer math

Stock calculator image.

Sprayer math can be intimidating, but the effort gives solid value. When combined with a calibrated sprayer you reap the following benefits: Estimate how long a job will take. Estimate how much spray mix is required. Estimate how much crop protection product must be ordered for the season. Populate spray records which allow you to […]

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How Low Can You Go?

There’s a lot of talk about lowering the boom to reduce drift and make twin fan nozzles more effective. But how low can we actually go with a boom before striping becomes a problem? We’ve done some calculating and have come up with answers. First, a few guidelines. Tapered flat fan nozzles require overlap to […]

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