Sprayer loading and the jar test

Adding pouches to the basket. Photo Credit – M. Lanthier, British Columbia.

This article was co-written with Mike Cowbrough, OMAFRA Weed Management Specialist – Field Crops The time and attention spent during sprayer loading is a worthy investment. It ensures that the products in the tank perform as intended and reduces the chance of physical incompatibilities. The label Pesticide labels are always the first point of reference. […]

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Airblast Agitation and Filling

Note the two paddles set at 90° to one another on the mechanical agitation shaft in this very cool “cutaway” Turbomist sprayer.

Agricultural products are formulated to be as emulsifiable as possible, but many do not mix well in water. They contain elements that do not dissolve (e.g. wettable powders), or they may be petroleum distillates (e.g. emulsifiable concentrates). Other products are heavier than water and form precipitates (e.g. fertilizers and powdered metals like copper). Consequently, good […]

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The Real Story Behind pH and Spray Water Hardness

The quality of water being used in the spray tank to act as the carrier for your pesticides can have significant effects on how well those pesticides will work. It is surprising however to find that very few growers have had water quality tested. Obviously, water that is free of suspended materials such as clay, […]

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Do Labels Help us Apply Pesticides Properly?

It happened three times this spring.  As is often the case, I was contacted by growers who wanted help with herbicide application.  In most of these calls, the discussion revolves around the proper choice of nozzles for a specific task, perhaps some questions on spray pressure, water volume and travel speed. But these three were […]

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Adjuvants in the Airblast Tank

Spray adjuvants are tank mix additives that either physically or chemically influence the efficacy, consistency or safety of pesticides. For example, adjuvants can improve the handling characteristics of a spray solution (e.g. water conditioners, de-foamers, emulsifiers). They can improve uptake into a target plant and/or improve the amount of contact between spray droplet and target […]

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