The 1991 Darling River cyanobacterial bloom is the largest algal bloom on record. Parts of the river were sprayed with a

Copper Copper is a chemical element with the symbol Cu (from la, cuprum) and atomic number 29. It is a soft, malleable, and ductile metal with very high thermal and electrical conductivity. A freshly exposed surface of pure copper has a pinkis ...

based algaecide using a crop duster.

References

{{Reflist 1991 in Australia