Spray Coverage in Potato

The location of water-sensitive papers in the potato plant canopy. Two plants were papered for each nozzle.

In June, 2014, 30 growers attended a spray coverage demonstration in a potato field in Alliston, Ontario. Our goal was to explore three questions: What is the effect of droplet size on coverage? What is the effect of volume on coverage? What is the effect of spray angle on coverage? This certainly wasn’t a scientific experiment. […]

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Debunking Sprayer Myths

Reproduced from an article written by Angela Lovell for Grainews, 2014 “The fundamental challenge of spraying is that it’s a compromise game,” said Tom Wolf of Agrimetrix Research and Training. “As operators and advisors we need to always balance the opposite needs of coverage, efficacy and drift.” Wolf, in a presentation at the recent Manitoba […]

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How to Use a Nozzle Flow Chart, With a Surprising Twist

Calibration Chart (US Units)

Undoubtedly, the number one question we get from operators is: “Which nozzle should I get”? Luckily there’s no simple answer, or we wouldn’t have jobs! The reason it’s not simple is because selecting the “right” nozzle for a sprayer is a process. It can be broken down into two steps: identifying the right flow rate […]

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Selecting the Right Water Volume

JD 4940

Low water volumes can mean less effort to apply pesticides. But there is a limit to how low water volumes can go before problems appear. To understand the reasons why, and help applicators use the right volume for a given situation, we briefly outline what happens to a spray cloud as it reaches the crop canopy. Basic Principles […]

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Four Rules of Nozzle Selection

Changing nozzle

Nozzle choice can be overwhelming due to the large selection available from many suppliers.  But nozzles are the most important part of the sprayer, being responsible for metering the liquid, atomizing it into droplets, and distributing it across the boom. Review this list for what’s available, then follow these general recommendations. 1. Choose a Coarse […]

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