It is possible to get nozzles that produce an offset pattern, or produce half a full pattern, to give a sharp cut-off at the ends of the spray pattern to minimise overlap. Often these are best suited to ends of the boom in row crop situations where the nozzle spacing and boom width don’t match other implements. These generally require good GPS accuracy. As with other nozzles they must produce an appropriate spray quality for the job

Weed control along fencelines is critically important to prevent green bridges acting as a source of weed seed and a potential host for pests and disease. Standard boom set-ups usually do not allow the spray operator to spray the fencelines without risking boom strikes.

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See Module 8: Calibration of the spray system.

Fenceline nozzles have a wide offset pattern that may extend for up to 4 or 5 metres, helping operators to avoid travelling too close to obstacles. The orifice size for some may be listed as 01, but because of the width of the spray pattern the flow rate is usually 10 times greater than a standard 01 orifice and the spray quality is usually very coarse or extremely coarse.

Careful consideration of plumbing and calibration is required to setup fence line nozzles.

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See Module 11: Pumps, plumbing and components.