Crop-Adapted Spraying – A Multiyear Study in Highbush Blueberry (2021 Update)

This work was performed with Erica Pate, OMAFRA Fruit Crop Specialist This case study took place on a 15 acre highbush blueberry operation in southern Ontario. In 2016, considerable pressure from spotted-wing drosophila (SWD) prompted the growers to make changes to their crop management practices and their spray program. They employed a three-pronged approach to […]

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Greenhouse foggers

Greenhouse application equipment spans from the humble squirt bottle, to gas-powered foggers, to robots equipped with hydraulic vertical booms. The variety of spray equipment available reflects a variety of needs, just as a carpenter’s toolbox contains different tools designed to do different things. In order to get the most out of foggers and misters, it’s […]

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Airblast for small acreage specialty crops

The Carrarospray ATVM (200 L pictured)

In June, 2014, I was invited to Durocher Farm in New Hampshire to see their new airblast sprayer. In years previous, spotted-wing drosophila was a significant pest in this two acre high bush blueberry planting. Since purchasing their new sprayer, they haven’t had any trouble. That’s quite an endorsement! I’m not sure what I expected, […]

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Crop-Adapted Spraying (CAS) and an Apple Orchard Case Study

The ultimate goal of CAS is to adapt the amount of active ingredient per unit ground area such that the amount of active ingredient per unit target area (usually the leaf area) remains constant for canopies of varying shape and density. When this is achieved with sufficient accuracy, the pesticide efficacy is maintained. These three plants are all significantly different in size. When calibration is appropriate to each plant, the foliar coverage “experienced” for each plant will be the same, in spite of differences in the amount of solution expelled per ground area.

An orchard spraying scenario Here’s a common situation: An orchardist following IPM identifies a pest that poses an economic threat. It’s an annual pest and spraying is really a matter of when, not if. The operation is 150 acres and runs three airblast sprayers; two have a tower and one does not. Multiple varieties are […]

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Compulsory, Standardized Sprayer Inspections

Sprayer Calibration in Belgium

Spring always brings renewed interest in sprayer calibration. This is good, because a well-maintained and calibrated sprayer will protect crops more effectively and efficiently, as well as reduce the potential for off-target drift and point source contamination. Presently, there is no nationally-recognized standard for sprayer calibration in either Canada or the United States. As a result […]

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