Spray coverage in field tomato

Spraying field tomato is difficult – period. In Ontario, early variety tomato canopies get very dense in July. The inner canopy is relatively still, humid, cool and a perfect environment for diseases such as late blight. It is challenging to deliver fungicides to the inner canopy and this can lead to inadequate disease control. Matters are slightly improved as the […]

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Beluga Drop Hoses in Corn – Utility and Return on Investment

In 2019 we evaluated the spray coverage from nine application methods on corn silks. The results showed that a directed application from drop hoses (aka drop pipes, drop legs) suspended in between the rows gave significantly higher deposits. If you’d like some context and history, the article can be found here. The results led us […]

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Angled Spray Nozzles in Wheat

When T3 wheat rears its head, the first rainy day brings questions about spray angles. Let’s begin with a graphic that illustrates how angled sprays cover a vertical target like a wheat head. Assuming moderate wind and sufficiently large droplets, this is a simplified depiction of what we would expect to see. But is this […]

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Herbicides in Asparagus – A homegrown solution

In 2016, an asparagus grower in southern Ontario picked up a used De Cloet Hi-Boy originally used to spray tobacco. His vision was to create a three-row herbicide sprayer for asparagus and we were invited to participate. His concept was to design shrouds that would contain the herbicide, but not snag the asparagus or drag […]

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Air-Assist Booms

Hardi Commander (118 foot boom) with TWIN air-assist

Air-assisted boom sprayers have been around since the 80s (likely longer). Common in Europe, they have demonstrated value in mitigating drift and improving canopy penetration. In North America, they are used by a few vegetable and berry growers, but are exceedingly rare among field croppers. There are a few possible reasons for this. Air-assist is […]

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