Biological control of Sagittaria 2021 - 2022

Realising the fruits of our labour – Australia’s first release of a fruit-feeding weevil for the biological control of sagittaria.

YACTAC have joined forces with the Victorian Department of Jobs, Precincts and Regions (DJPR), Department of Primary Industries (NSW DPI) and Murrumbidgee Irrigation Limited (MIL) to support the biological control of the declared Weed of National Significance sagittaria (Sagittaria platyphylla).

The project "Realising the fruits of our labour - Australia's first release of a fruit-feeding weevil for the biological control of sagittaria" is the culmination of years of research to manage and reduce the impact of sagittaria in waterways. Sagittaria is an aquatic weed which grows aggressively in the Yanco Creek System and causes irrigation channels to block, hampers water flow, and obstructs wetlands and natural watercourses. The fruit weevil Listronotus appendiculatus is the insect species chosen for the control. 

Fruit-feeding weevils are currently being reared in AgriBio facilities in Victoria and NSW and will be released in over twenty "nursery" sites in late 2021 and 2022. 

YACTAC have traditionally used chemical control on sagittaria and are looking forward to implementing biological controls in the 2021-2022 season.  

Watch this space for more information in the coming months...