Attempts At Resolving The Algae Problem
For over twenty years, government and agricultural industry groups battled with the issue, largely unsuccessfully. The scale of the problems seemed daunting and because there seemed to be numerous causes, and most stakeholders blamed each other. As a result, the problem got worse and the issue became politicised.
Some programs that were undertaken with various degrees of success included:
- development of a "sandplain" superphosphate by CSBP which retained its nutrients for much longer
- large-scale top-dressing of farm land with bauxite tailings taken from ALCOA's mines
- replanting cleared land
- refurbishment of waterland fauna habitats (using work-for-the-dole labour)
- removal of some of the large scale industries including the piggery
- educating farmers on better farming practice, including restrictions placed on use of phosphate-laden fertilisers.
- harvesting of algae on the estuary foreshores (using graders) and trucking the collected material off-site. Other automated mechanical harvesting systems were also tried.
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