Moama farmer Ross Wild started using the popular weedkiller Roundup on his oat, barley and wheat crops when it first became available in Australia in 1976.

“There was nothing on the drums to tell you it was a poison,” Mr Wild says. “I remember seeing ads that said you could drink the stuff.”

Mr Wild recalls being saturated with Roundup in his old cabin-less tractor: “It was like a mist all over you.”

And then in March 2018, he was diagnosed with non-Hodgkin’s lymphoma.