How to Nozzle an Airblast Boom

There’s a certain deer-in-headlights expression that creeps onto a sprayer operator’s face when we start talking about nozzles. I profess some sympathy for my field sprayer clients given the overwhelming variety of nozzle styles they must choose from, but I reserve most of it for the airblast operators. The reason being that horizontal booms carry the […]

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Calibrate Airblast Output

(A) Suggested spray distribution for airblast sprayers on classic spindle apple trees. (B) If the canopy is of uniform depth and nozzles are approximately the same distance-to-target, such as a vine or high-density apple, spray distribution should also be uniform (i.e. each nozzle sprays the same rate). These distributions may change when there is fruit to protect.

Airblast operators have to know the volume of spray mix their airblast sprayers emit for a given area. Generally, this is referred to in L/ha or US g/ac. This information must be recorded to comply with traceability requirements (e.g. CanadaGAP) and to ensure they are following the pesticide label. There are many ways to determine this […]

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Clean Your Nozzles

When operators winterize their sprayers, they should remove all the tips and store them separately. Many store them in large pails with lids. Calibrating the sprayer just prior to winterizing will indicate if the nozzles should be stored, or replaced. Let’s assume the tips are still within 5% of the average output, and 5% of the manufacturer’s pressure […]

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Selecting a Field Sprayer Nozzle

This article is reproduced, with permission, from Ohio State University Extension’s factsheet FABE-528. Although nozzles are some of the least expensive components of a sprayer, they hold a high value in their ability to influence sprayer performance. Nozzles meter the amount of liquid sprayed per unit area, controlling application rate, as well as variability of spray over the width of […]

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What’s my Spray Quality, in 3 Simple Steps

The introduction of dicamba and 2,4-D tolerance traits in corn and soybeans will be accompanied by an unprecedented emphasis on spray drift management by the registrants. We’ve already seen promotion of low-drift nozzles at field days as well as websites dedicated to product stewardship. In addition, product label statements for 2,4-D choline and the new […]

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