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.
Our most recent articles:
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The Art and Beauty of Spraying
This is an indulgent article. Over the years I’ve amassed thousands of sprayer-related photos. I find some to be compelling and even beautiful. It might be a face, or a composition, or the colours, or maybe evocative subject matter. What follows is a gallery of such photos. We do not condone or recommend any brand […]
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Beluga Drop Hoses in Corn – Utility and Return on Investment
In 2019 we evaluated the spray coverage from nine application methods on corn silks. The results showed that a directed application from drop hoses (aka drop pipes, drop legs) suspended in between the rows gave significantly higher deposits. If you’d like some context and history, the article can be found here. The results led us […]
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Angled Spray Nozzles in Wheat
When T3 wheat rears its head, the first rainy day brings questions about spray angles. Let’s begin with a graphic that illustrates how angled sprays cover a vertical target like a wheat head. Assuming moderate wind and sufficiently large droplets, this is a simplified depiction of what we would expect to see. But is this […]
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How to Size a Nozzle for Pulse Width Modulation (PWM)
PWM is gaining popularity, and there is an ever-increasing number of first-time users that need to make nozzle selections for their system. We’ve written about it here, here, and here. Recall the PWM replaces spray pressure with Duty Cycle (DC) of a pulsing solenoid as the primary means of controlling nozzle flow. The solenoid shuts […]
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Micron Woman – Guide to the World of Spray Droplets
You just finished a great spray day. Everything felt right! Your timing and product choice were bang-on, the weather was good, and your sprayer was calibrated. But, do you know what happened to the spray once it left the nozzle? The behavior of spray droplets, and how they interact with the target, can be tough concepts […]
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The Challenges of Spraying by Drone
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 the US, too. The Yamaha RMax and Fazer helicopters, which pioneered […]