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 Duty Cycle […]

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Variable Rate Spraying

Variable rate spray application is receiving a lot or attention with our increased ability to farm according to prescription maps.  For dry products such as seed or fertilizer, metering is relatively straight-forward and variable rate application has been possible for many years. However, liquid product application has been more complex and requires special approaches Hydraulic […]

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Developing Criteria for the Ideal Agricultural Spray – a Biologist’s Perspective

Originally published in: Wolf, T.M. and Downer, R.A. ILASS Americas, 11th Annual Conference on Liquid Atomization and Spray Systems, Sacramento, CA, May, 1998 Note to reader: It’s been nearly 23 years since we wrote this paper at the invitation of organizers of the Institute for Liquid Atomization and Spray Systems Conference. At the time, custom […]

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The Most Important Developments in Spraying

Some things have improved a lot. Others have lost ground. Some years ago, a few of us weed scientists sat around a table and debated the most important developments in agriculture in our lifetimes. It was a great discussion, and we arrived at a few that included direct seeding (for its soil and moisture conservation […]

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What do European Sprayers Bring to the North American Market?

We discuss what sets the European sprayer designs apart, with examples of overall dimensions, engine and wheel sizes, as well as tanks, booms, plumbing features. European sprayers offer similar or greater capacity compared to North American models with lighter weights and innovative designs. […]

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