Adjuvants – A Primer

Spreader/Surfactant penetrating wax paper to get to water-sensitive paper.

We can always count on receiving regular questions about tank mixes but in recent years we’re hearing more about adjuvants. Many pesticides are already formulated with a variety of adjuvants. Perhaps they are intended to improve shelf-stability, or mixing and/or product performance. A pesticide label may specify a particular name brand or generalize a category […]

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OrchardMAX

OrchardMAX won the 2016 Canadian Agri-Marketing Association’s “Certificate of Merit” in the Mobile Apps Category. What is OrchardMAX? OrchardMAX is a free app developed by the Ontario Ministry of Agriculture, Food and Rural Affairs to improve sprayer efficiency and effectiveness in apple orchards. The app is based on the Crop-Adapted Spraying (CAS) model, which was tested in semi-dwarf and high-density […]

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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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