Controlling submersed aquatic weeds with herbicides is difficult, mainly due to the rapid thinning of herbicide in the water column and the dispersal through water currents. Delivering herbicide to target plants while avoiding non-target damage is challenging. Treating large water bodies is also very expensive, as the entire water body needs to be treated.

A solution is to use carriers, such as gels. By mixing herbicide with a carrier that rapidly sinks the herbicide to the target plants and prevents dispersal of herbicide in the water column, the amount of herbicide necessary to control an infestation is greatly reduced. The carrier also improves contact of the herbicide with the target plants, increasing control efficacy.

This project aims to identify suitable carriers for the application of herbicides to control a range of submersed aquatic plants. Initially, we'll run experiments in artificial pond systems to identify useful carriers, and then follow up with field trials to measure control efficacy in a real-world application.

Location: St Lucia and DAF Queensland Ecosciences Precinct

Expected outcomes: an understanding of the importance of chemical weed control of water weeds

Supervisors: Professor Steve Adkins, Dr Tobias Bickel

Before you apply: contact the primary supervisor for more details

Project members

Professor Steve Adkins

Principal Research Fellow
School of Agriculture and Food Sciences