Author: Tom Wolf (Nozzle_Guy)

About Tom Wolf (Nozzle_Guy): Tom Wolf is based in Saskatoon, SK and has 33 years research experience in the spraying business. He obtained his BSA (1987) and M.Sc. (1991) in Plant Science at the University of Manitoba, and his Ph.D. (1996) in Agronomy from the Ohio State University. Tom focuses on practical advice that is research-based to improve the efficiency of producers.

Posts by Tom Wolf (Nozzle_Guy)

Plot Sprayer Calibration Worksheet

Posted on May 15, 2018 (October 18, 2022)

Need a worksheet for calibrating a plot sprayer? Well, we just so happen to have one here: Plot Sprayer Calibration (May 15, 2018) […]

Spraying in Dusty Conditions

Posted on May 15, 2018 (September 13, 2021)

Dusty conditions are common in spraying, and in dry springs they are often associated with a further challenge, drought-stressed plants. There is no magic cure for these problems, but here are a few guidelines: 1. Most products are not strongly affected by dust. But two important products are very dust-sensitive, glyphosate and Reglone. The active […]

Sprayer Turn Compensation

Posted on April 3, 2018 (April 19, 2021)

Turn compensation is a feature in pulse width modulation (PWM) sprayers in which nozzle output matches the boom’s speed during a turn. When turning, the inside and outside of a boom travel at different speeds, resulting in over-dosing on the inside and under-dosing on the outside. Read about PWM systems here, here, and here. The […]

ExactApply Primer

Posted on March 30, 2018 (April 12, 2023)

ExactApply is an application system capable of PWM, introduced by John Deere in August, 2017, with its first customer field season in 2018. ExactApply offers several unique features that differentiate it from the existing systems. Here is a brief description of its major components and capabilities: Nozzle Body Design: AutoSelect Mode: Pulsing Mode Nozzle Selection […]