Part of the Great Barrier Reef reflects on the underside of the ocean's surface, Updated August 13, 2011. An environmental spokesman says recent Queensland floods are carrying pollutants through the Great Barrier Reed and destroying sea-grass beds. Naomi Brookfield, file photo: User submitted

By Timothy McDonald
13 August 2011
The Queensland and Federal Government’s first report card on water quality in the Great Barrier Reef has found pesticides used in agriculture are causing significant problems for the reef. The report says some farmers need to be more careful with their chemicals, finding that nearly one-quarter of horticulture producers and 12 per cent of graziers are using practices considered unacceptable by industry and the community. In the case of the sugar cane industry, roughly one-third face the same criticism. Nick Heath from the World Wildlife Fund Australia says the sugar cane industry in the wet tropics had a 72 per cent rate of “unacceptable practice”. Mr Heath says the report shows government needs to further limit the use of chemicals, and he has called for a ban on the weedkiller Diuron. “Pesticides have been found at toxic concentrations up to 60 kilometres inside the World Heritage area and at concentrations known to harm coral,” he said. “And you may be aware that there’s a big die-off in turtle and dugong numbers at the moment as a result of the floods. Those floods are carrying these pollutants and they’re basically destroying the sea-grass beds of Queensland.” But the sugar cane industry’s peak body, Canegrowers, says the data reflects practices of a few years ago, and says there has been significant change since then. Canegrowers chief executive Steve Greenwood says Diuron is used safely and should not be banned. “The banning of Diuron from use within the cane industry would be a major setback for us,” he said. “Without the use of that herbicide we would basically have no other replacements for that. […]

Pesticides hurting Great Barrier Reef: report