Published on 31/07/2025
But there could be one area that needs looking at more closely to ensure better yields and ROI - Adjuvants.
Acknowledged for their ability to get every last drop of value out of spray programmes, they help actives get onto and into target plants more effectively and reduce spray waste including drift.
Pieter Van Der Westhuizen, UPL NZ regional manager upper North Island, says all adjuvants, however, are not created equal.
“You want to see trials and data to know you’re making the best decision.
“To get the most out of adjuvants, you need to ask the right questions and check the facts. And if you can save on labour, passes, water and fuel, they’re all bonuses.
“That means not only choosing the right active, but the right adjuvants – the products that add efficacy, accuracy of application, stickability, and uptake to spray programmes.”
Industry pioneers, UPL NZ knows adjuvants well. Previously Elliott Chemicals, it began work on the category in New Zealand over two decades ago. Today, it remains the category leader with a portfolio of over twenty proven adjuvant products – each with their own niche.
Van Der Westhuizen says getting the best from any adjuvant is about checking the data and asking the right questions.
“That way you maximise spray programme efficacy.”
He says the UPL range is based on hard science.
“That’s not something everyone can say, and it took a lot of time and commitment. Importantly, much of the research was carried out in NZ with our conditions, farming and orcharding, commercial growing systems, and challenges in mind.”
He says lack of information on crop safety is a red flag.
“You definitely don’t want phytotoxicity or residue issues.
“That can severely damage crops and reduce marketability and, ultimately impact bottom lines and even reputations.
“It all goes back to the research. OK, another adjuvant it may be cheaper, but will it actually deliver value for money? How do you know for sure, and that it can be recommended with confidence?
“We always go back to research and sticking to the label rates.
“Extensive work has gone into that and multiple trials. They’re not just a one-quick-glance-overkind of thing.”
An example he gives is Li-700, one of the most researched adjuvants in the world.
Proven in global trials. Li-700 significantly reduces off-target drift, provides a wider window of spraying, and reduces water use and unintended consequences to neighbouring crops and properties.
“It’s just important to know that the adjuvant you’re recommending has that scientific back-up and won’t let anyone down.”