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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Airblast Spring Start-up and Winterizing

Any description of airblast sprayer start-up must, contextually, make assumptions on how it was winterized for long-term storage. This cyclic relationship is why I use a chicken-and-egg title slide when giving this presentation. The inability to describe one process without the other is further complicated by the possibility that the sprayer is brand new and was […]

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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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Optimizing Sprayer Air Settings – Part 2

This is part two of a two part article on how to optimize the match between the sprayer air and the target canopy. You can find the first part here. For a more fulsome description of the process, consult chapters 3, 9, 10, and 11 of Airblast101. Evaluating air energy – Ribbon test part 2 […]

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Optimizing Sprayer Air Settings – Part 1

This is part one of a two part article on how to optimize the match between the sprayer air and the target canopy. For a more fulsome description of the process, consult chapters 3, 9, 10, and 11 of Airblast101. Why is air so important? Air handling is the most important and least understood mechanical […]

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