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nozzle selection

Catalogue: GRDC Media
Higher travel speeds have created the majority of issues associated with poor application... "When using a coarse spray quality, the larger droplets tend to hold their trajectory and faster travel speeds to increase the horizontal movement of larger droplets," Mr Gordon says... "Many operators and advisers don't fully understand the risks associated with spraying during the presence of surface temperature inversions, which occur on most nights," he said...
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Catalogue: GRDC Media
Growers warned: Spray in haste, regret at leisure.. Over head nozzle spraying water.. Higher travel speeds have created the majority of issues associated with poor application...
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Catalogue: Ground Cover
Nozzle selection improves performance and saves money.. Changes to travel speed or application volume will change the type of nozzle that would be most suitable.. The process of selecting nozzles must take into account: the target, product type and label, which dictate the spray quality that should be used; the spray quality chosen then dictates acceptable conditions; pump capacity and plumbing, which determine the type and size of nozzle that should be used; travel speeds, which determine the range of operating pressures when automatic rate controllers are used; and the pressure range, which dictates the most appropriate nozzle for the situation and the controller settings required...
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Catalogue: GRDC Media
A useful new resource for growers and spray operators will help them meet the technical requirements for a successful spraying program in the coming season... "Preparing a spray plan assists with nozzle selection, controller inputs and systems checks," he said... Dr Rainbow said it was also critical to check and record controller settings; use the self-test or test speed function to check the machine for leaks, restrictions and uniform output; and check the machine's output against the spray plan...
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Catalogue: GRDC Updates
Using a 50cm nozzle chart, we find that we could use an 015 orifice at 7 bar, an 02 orifice at 4 bar or an 025 orifice at 2.5 bar... STEP 3: Identify the types of nozzles based on their operating pressure at the average speed, and identify the most appropriate minimum operating pressure for each nozzle type (the SPRAYWISE charts are useful for evaluating suitable minimum operating pressures for each of the nozzles).. For example you may choose a nozzle that is coarse at your lower volume range and medium at higher volume to go from fallow to in-crop in winter (such as a pre-orifice nozzle or low pressure air induction), and have another set that stays coarse through your volume range to do summer fallow and pre-emergent spraying (such as a coarser low pressure air induction)...
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Catalogue: GRDC YouTube channel
" IWM: Spray Application of Herbicides - Nozzle Selection 11 November 2013 Bill Gordon, (Spray Application Consultant) what nozzles should be used when applying contact and translocated products... How variations in boom speed, application volume, nozzle selection will influence efficacy of the double knock... Technology to reduce spray drift GCTV: Drift Reducing Technology..
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Catalogue: GRDC Factsheets
PrACTICAL TIPS TO rEDUCE SPrAy DrIfT.. Use the coarsest spray quality that will provide efficacy... If considering spraying at night, be Consider using auto-height control, suitable Other studies have shown that at night aware many product labels state: "DO the airborne fraction can be up to 5 times touch-down wheels, or lower travel speeds NOT spray under surface temperature greater than that occurring during the day to improve boom stability and to assist with inversion conditions", which have been minimising boom height...
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Catalogue: GRDC Factsheets
PrACTICAL TIPS TO rEDUCE SPrAy DrIfT.. Use the coarsest spray quality that will provide efficacy... If considering spraying at night, be Consider using auto-height control, suitable Other studies have shown that at night aware many product labels state: "DO the airborne fraction can be up to 5 times touch-down wheels, or lower travel speeds NOT spray under surface temperature greater than that occurring during the day to improve boom stability and to assist with inversion conditions", which have been minimising boom height...
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