When is Fungicide Coverage Critical? Always!

Strawberry anthracnose. Photo by Pam Fisher, OMAFRA.

Introduction A local strawberry producer was just beginning his harvest when the entire field was suddenly stricken with anthracnose. He would have done almost anything to save it, but he could only watch in frustration as the disease quickly devastated his crop. While he was telling me this story, he was wringing his hands; I’m […]

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Exploding Sprayer Myths (ep.3): Nozzle Pressure

Tom and Jason - Myths Season 1

Here’s the third in our series of short, educational and irreverent videos made with Real Agriculture.We wanted to explain where pressure readings are taken on a sprayer and why it’s so important to know what pressure your nozzle is experiencing, rather than what the screens in your cab are telling you. Not only does pressure […]

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Exploding Sprayer Myths (ep.2): Canopy Penetration

This is the second of a series of short, educational and irreverent videos made with Real Agriculture to bring a little levity to sprayer education. Let’s face it – ironically, nozzles can be pretty dry. Here we enjoy an early morning soy bean scout and a light breakfast of toast as we demonstrate how pressure, droplet size and […]

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Drop Arms can Improve Coverage in Field Peppers

Spraying with drop-arms in mid-August.

In early July 2016, a farm supplier contacted us on behalf of a client with a history of disease control issues in his field pepper operation. He wanted us to calibrate their sprayer and diagnose spray coverage to see if there was room for improvement. Coverage doesn’t equal efficacy, but it’s generally a reliable indicator. When […]

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Pressure Changes Spray Angles – A Lot!

Soybean demo plot sprayed with a contact herbicide using 110 degree air induction flat fans at 20 psi. The collapsed spray pattern did not overlap sufficiently to burn the entire crop down, leaving a striped pattern and demonstrating the poor coverage.

When a nozzle catalogue states that a nozzle produces an 80˚ or 110˚ fan throughout a given pressure range, the reader (rightfully) assumes it to be true. Unfortunately, this is not always the case. To illustrate this, I assembled a collection of red, flat fan nozzles (‘04s). They represented a variety of spray qualities and […]

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