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 Articles by Dave about spraying precisely, safely and effectively from a mature perspective ;) Laughing

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Tapered Fan nozzles V Banding (Even Spray) nozzles for Optical Spot Sprayers???


With the release of ARAG/ASJ’s first purpose designed 2,4-D compliant (XC) Optical Spot Spray nozzle for broad-acre boom sprayers, I felt it was time to put pen to paper regarding the real world considerations in choosing between narrow angled overlapping fan nozzles and banding (even spray) nozzles... READ MORE>>>.



Spray Quality Management Update 

(Introducing ASAE S572.3)

Before the 2,4-D Spray Quality restrictions were legislated in late 2018, the nozzle selection process was simply to look for the coarsest Spray Quality providing efficacy over the target. READ MORE>>>



PWM v Air Induction for Drift Management & Coverage

Pulse Width Modulated (PWM) have been gaining notable popularity in Australia over the last few years the most visible players being Agrifac with their SSP (Strict Spray Plus) system, more recently John Deere’s ExactApply and of course before both of those, Case’s Patriot >>> READ MORE


New label requirements for tank mixes containing 24D came into original effect on October 4th, 2018, then renewed in October 2019. The rules demand a minimum working Spray Quality of VC (apart from Permitted exceptions) with information including nozzle brand, size, rate/ha and spray pressure to be recorded to prove compliance. 

What's new for 2020?

  1. The new list of Standards accepted by the APVMA for 2,4-D use was published by the APVMA in October 2019.
  2. A special product Permit has been issued for booms not capable of achieving 500mm or less from the higher of either the crop canopy or the targeted weeds. 



The seemingly confusing topic of Pulse Width Modulating systems put simplyREAD MORE>>>

This article is all about selecting the most efficient nozzle for fungicide applications in cereal crops and canola. We al so discuss in detail the considerations in terms of Spray Quality. READ MORE>>>

 Dave’s Concise Stubble Spraying Guide

These are general principle’s that apply to summer weed control and pre-seeding spray operations in standing stubble. READ MORE and WATCH THE VIDEO>>>
There has been a lot already written about spray drift by some very smart people. In an attempt to keep it brief and easy to follow, here is my take on the subject. READ MORE>>>
This is a thorough explanation of the surprising manner in which Spray Quality Ratings, M, C, VC etc. are calculated. Worth a read as it nothing like you would expect! READ MORE>>>

Penetrating Stubble - The Stubble Jet Story

One of the issues we have discussed recently is about how to avoid having too much spray being taken up by standing stubble and avoiding the shadow effect behind the stubble due to the forward movement of your boom-sprayer. READ MORE and WATCH THE VIDEO>>>


Eliminating Weeds in Wheel Tracks

“Spinning wheels" on your boom-sprayer displace air.  The result is usually to displace smaller droplets away from the wheel tracks; we have all seen this!  That’s where nozzles with bigger droplets with more momentum are a good choice behind the wheels, regardless of what else is on the boom. READ MORE and WATCH THE VIDEO>>>


Why COARSE sprays work.

A visitor to our website wrote;

"How do any of your customers get a medium sized droplet at 60-70 lit/ha at 14-16 km/h? 
We often don't want that size for drift purposes but the Agronomist wants medium for some chemicals..."

Many operators, particularly those on 50 cm nozzle spacing's and using Air Induction nozzles, will never have a formally M rated nozzles on their boom at any time ever. Does that mean they need be hampered from delivering a label compliant and efficacious volume of medium sized droplets into a dense canopy from their C rated nozzles?  NO!   READ MORE>>>


All About Nozzle Wear

Apart from depending strongly on the nozzle material, the rate of nozzle wear depends on the combination of a number of different factors including the abrasiveness of the products being sprayed, operating pressure, nozzle size and the adequacy of filtration. READ MORE and WATCH THE VIDEO>>>



To avoid having to even think about Spray Quality transition pressures on the job, I am suggesting that we take a different approach to the set-up and configuration of the 3TS. READ MORE>>>