Spraying Ginseng – A New Way to Spray

Timed output test. Prepare to get very wet. Sprayer must be clean and PPE is a must.

Introduction An effective ginseng protection program begins with observing the Integrated Pest Management (IPM) process: diagnose the problem, monitor the problem, control the problem, and monitor the results. When spraying is warranted, the operator should understand the basics of application technology. This not only includes the equipment, but the effects of changing spraying parameters (such […]

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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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Drop Hoses 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. Improved coverage doesn’t necessarily mean improved efficacy, but generally it’s a […]

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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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Measuring Spray Coverage – Tips with Tom #8

Tips with Tom - Title

The importance of good spray coverage is emphasized in all kinds of agricultural publications, including product labels. But, according to Tom Wolf, “the labels are remarkably silent on what good coverage actually is and how you can actually measure it.” Tom goes on to explain that spray coverage can be defined using three main criteria: […]

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