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.
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Browse our archive of expert-written articles, videos, presentations, apps, calculators, tables and ePubs, and more.
Recent Articles
Comparing Water Sensitive Paper Brands
Introduction Spray coverage describes the degree of contact between spray droplets and the target surface area. This metric can be used to predict…
Wind and Flight Speed Shape Drone Spray Coverage: Lessons from 3D Deposition Mapping in Wheat
In this study, 3D sampling of drone spray applications in wheat demonstrates that coverage is strongly influenced by the interaction between drone downwash,…
Airblast Nozzles – Distributing Flow
There’s a certain deer-in-headlights expression that creeps onto a sprayer operator’s face when we discuss nozzle selection. We sympathize with our field sprayer clients…
Field Sprayers
Field sprayers are the crop protection workhorses in broad acre and row crop production. From basic operation to new technology, from nozzle selection to tank mixing, if you want to learn to be more effective and efficient with horizontal booms, it’s here.
Green-on-Green in Ontario: A Custom Operator’s Experience with See & Spray Premium
In the summer of 2025, Todd Frey of Clean Field Services (Drayton, Ontario) and I participated in the Elora Weeds Tour. We discussed…
Recirculating Boom Options
If you read this site, you know we’re fans of recirculating booms. We love them for three reasons: If you’re new to the…
Broadcast Boom Nozzle Spacing
North American built boom sprayers have nozzle spacings of 20” (50 cm in the rest of the world), but other spacings such as…
Orchard and Specialty Sprayers
Specialized crops require specialized sprayers, and if you’re interested in orchards, berries, vegetables, greenhouse and nursery production, this section will have what you need. Dive in to learn about calibration, optimized settings, automation and best practices for a wide array of crop protection equipment.
Evaluating the return on investment of optical sprayers for horticulture
Investing in an optical sprayer for horticulture is not a straightforward financial decision. Compared with a conventional boom sprayer, the upfront capital cost…
Airblast Nozzles – The Nozzling Process
Establishing an airblast nozzling solution is an involved process. We must first define the working parameters and flush out any special circumstances. Then…
Assessing Airblast Coverage
This article describes a method for assessing airblast sprayer coverage based on a protocol developed by Dr. David Manktelow (Applied Research and Technologies…
Drone Sprayers
The next chapter in aerial application can be found here. Fixed wing, quadcopters, helicopters and hybrids: Follow the evolution of remotely piloted crop protection as we explore the newest research and best practices for spraying by drone.
Safe and Effective Pesticide Application using Drones
Remote Piloted Aerial Application Systems (RPAAS) or Unmanned Aircraft Spray Systems (UASS) are generally referred to as drones. They are an increasingly common…
Drone Tendering – Considerations before Buying or Building
Much of this article is based on a session and tradeshow I attended at the 2026 Drone End-User Conference in Kansas City. I…
The Carvalho Boom and the Stages of Quadcopter Flight
The Hypothesis The results of a recent herbicide deposition study performed with the DJI T100 led us to observe that after ~13 m/s,…
Airblast 101
Become a safer, more effective and more efficient airblast operator.
Airblast101 began in 2010 as a classroom-based workshop in Ontario. It was intended as a primer and decision-support tool for operators to become safer, more effective and more efficient.
The first textbook edition was made freely available in 2015 as an eBook and in hardcopy, in English and French. In 2020, the second edition was reimagined and expanded to make it globally relevant. Thousands of copies have been distributed worldwide.
Contact Sprayers 101
Sprayers 101 is Dr. Jason Deveau and Dr. Tom Wolf. With more than 40 years of experience in agricultural spraying, Tom and Jason have researched and presented globally on many aspects of safe, effective and efficient applications.
