After seeing Don Huber lay out the evidence for glyphosate's potential to inhibit nutrient takeup in crops, WA farmer Brad Jones is re-examining the herbicide's place on his farm.
That's not going to be easy, he acknowledges, but Dr Huber's presentation in Perth this week has added to a pre-existing unease about the heavy reliance on the chemical and persuaded him that it is a challenge worth tackling.
Mr Jones and wife Kate farm at "Bungulla" near Tammin, Western Australia, and are co-owners with Mr Jones's brother Mike of the WA-Queensland aerial application business Cropcair.
Mr Jones has been using precision agriculture technologies to wring every drop of potential from each plant. He now wonders whether he might realise even more potential by lowering his use of glyphosate, or counteracting its use with applications of trace elements.
For instance, last year Mr Jones flew a multi-element trace element brew in test patterns onto his crops. When he pulled up the subsequent yield maps, the positive crop response to the minerals "looked like tiger stripes", he said.
He now wants to assess whether glyphosate influenced that result by tying up a proportion of minerals that might have otherwise gone into the crop.
He is also looking for ways to assess glyphosate's effect on plant strength - an increasingly important criteria as climatic extremes grow more extreme.
Mr Jones has the tools to monitor a change of management, either by lowering glyphosate use or counteracting its use.
What he lacks is a way to change without dreaming up an entirely new farming system.
"It's going to take some serious thinking," Mr Jones said.