Mode of Action and Spray Quality

The decision on application method for herbicides boils down to two main factors: (a) target type and (b) mode of action. In general, It’s easier for sprays to stick to broadleaf plants on account of their comparatively larger leaf size and better wettability compared to grassy plants. There are exceptions, of course – at the […]

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Fundamentals of Spray Drift

The year 1989 marked my first spray drift trial under the watchful eye of Dr. Raj Grover and John Maybank. We evaluated the performance of several spray shrouds, Flexi-Coil, AgShield, Brandt, and Rogers, and wanted to measure just how effective they were. But in my heart I wasn’t interested in drift. I wanted to study […]

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Venting Liquid-Filled Pressure Gauges

Liquid-Filled or Dry? Small-plot agricultural sprayers should have a pressure gauge on the wand or boom to ensure accurate application rates. Most are added after-market and the operator has the choice of buying liquid-filled or dry gauges. Glycerine- or silicone-filled gauges are preferred because they dampen pressure spikes, pulsation and mechanical vibration. Compared to dry […]

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Paint it black

Never fail, as spring turns to summer we get questions about algal growth in water tanks. There are lots of suggested solutions, but questions about pH antagonism and phytotoxicity seem to linger. We’re planning trials for this summer (2021) to explore how well copper pipe, copper wire, copper sulfate, citric acid and chlorine pucks work, […]

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Recirculating Boom Options

If you read this site, you know we’re fans of recirculating booms. We love them for three reasons: They save money and waste by recovering spray back to the tank during priming and rinsing They make boom cleaning easier by eliminating boom-ends They require individual nozzle shutoff, which makes for better sectional control If you’re […]

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