Drift | Sprayers 101

The Challenges of Spraying by Drone

Tom Wolf (Nozzle_Guy) February 18, 2019

Spray application by drone is here. It’s common practice in South East Asia, with a very significant proportion of ag areas now treated that way. Estimates from South Korea, for example, suggest about 30% of their ag area being sprayed by drone. It’s in ...Read More

How Airblast Spray Droplets Behave (or Misbehave)

Jason Deveau (Spray_Guy) January 21, 2019

Some pesticide labels require or prohibit certain droplet sizes to reduce the potential for drift. But, even when labels are silent about size restrictions, operators should be aware of the potential for droplet size to affect coverage. In the case of airblast, droplets should ...Read More

The Label Summary Sheet Proposal

Jason Deveau (Spray_Guy) November 7, 2018

In an earlier article we identified shortcomings in the content and design of today’s pesticide labels. From the perspective of the spray applicator, the information needed most often can be difficult to locate, anachronistic, contradictory, subjective or even missing from the label altogether. To truly encourage an applicator to read ...Read More

Do Labels Help us Apply Pesticides Properly?

Tom Wolf (Nozzle_Guy) November 7, 2018

It happened three times this spring. As is often the case, I was contacted by growers who wanted help with herbicide application. In most of these calls, the discussion revolves around the proper choice of nozzles for a specific task, perhaps some questions on ...Read More

What is Delta T and why is it important for spraying?

Tom Wolf (Nozzle_Guy) June 19, 2018

Delta T, also known as “wet bulb depression”, is an atmospheric moisture parameter whose use in spraying has made its way to North America from Australian operations. It is defined as the dry bulb temperature minus the wet bulb temperature, and provides an indication ...Read More

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