Paraquat will continue to be used in Australia despite 70 countries banning weedkiller over Parkinson’s disease fears

Herbicide manufacturer Sygenta had reservations dating back to 1970s but regulator says tighter controls, including phasing out backpack sprayers, can protect workersFollow our Australia news live blog for latest updatesGet our breaking news email, free app or daily news podcastThe herbicide paraquat, banned in over 70 countries, will remain legal in Australia despite Parkinson’s groups, scientists and neurologists arguing there is a strong correlation between direct exposure and the incidence of the disease.The Australian Pesticides and Veterinary Medicines Authority (APVMA) announced its final decision on Tuesday following a decades-long review of the highly toxic paraquat and a related chemical, diquat.