Azolla is an aquatic weed which can spread rapidly and choke dams and stock water troughs. It can reproduce asexually and under ideal conditions can double in size (area of water covered) in less than two weeks.
It thrives where surface water dams collect nutrients, especially nitrogen and phosphorous from run off or stock access. The dispersable, grey clay soils of the Strzelecki ranges seem to suit the growth of azolla as the nutrients are carried into surface water storage dams on the soil particles, especially the clay. This project attempted to control the growth of azolla through two treatment activities.
We held a field day on December 1st 2017, to showcase the results of the treatments.
The azolla control project will be written up as a case study. This will be published here when available. In the interim the field day notes are available for download as a PDF file.