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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50 Ways to Get Good Coverage

Positions for water-sensitive papers.

50 Ways To Get Good Coverage Sung to the tune of “50 Ways to Leave Your Lover” by Paul Simon. The problem is all inside your barley canopy The answer’s easy if you find it empirically I’d like to help in your quest for efficacy There must be fifty ways to get good coverage She said it’s […]

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Fungicide Application Basics

Fungicide use appears to be the fastest growing segment of North American crop protection.  Here is some advice on how to get the best bang for the buck. Timing is the most important part of fungicide application. Diseases can develop and spread quickly.  Most fungicides cannot cure a disease infection, they can only protect against […]

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How Fast Should I Drive My Sprayer?

It seems simple: The faster you drive the sprayer, the more area you cover. This makes higher travel speeds a seductive method for improving productivity. Sprayer manufacturers knew this 25 years ago when pull-type sprayers first received bigger, suspended outrigger wheels. Since then they’ve delivered more powerful engines, better hydraulic motors, smoother suspension and cruise […]

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Water Sensitive Paper for Assessing Spray Coverage

Water Sensitive Paper Water-sensitive paper is a useful tool for assessing spray coverage.  Here are a few tips for making it work for you. Water-sensitive paper is manufactured by a number of companies, including Syngenta, Spot On, and WS Paper and is available for purchase (see here for comparisons). The papers are a useful tool […]

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