Rangelands NRM Blog, News & Resources

East Kimberley weed management success

Each month, we will be focusing on a successful project that was funded by the State NRM office last year. This month, we look at an effective weed management program at the Lakes Kununurra and Argyle Ramsar site in the East Kimberley.

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Funding support during 2011/12 from State NRM WA enabled Ord Land and Water (OLW) to continue their successful weed control programs at Lakes Kununurra and Argyle in the East Kimberley. The noxious rubber vine Cryptostegia grandiflora was one of a number of Weeds of National Significance (WoNS) and ‘declared weed’ species that were targeted in the region.

Dick Pasfield, Coordinator at Ord Land and Water said weed management programs are essential to protect the region’s biodiversity.

Rubber vine is a highly invasive weed, which by threatening riparian and rangeland vegetation can make land unviable for pastoral production.

Other weeds along the lake and river such as Leucaena, Neem trees and Bellyache bush are also impacting on the region’s biodiversity.

“It is hoped that control of these invasive weeds will improve the productivity and condition of the rangelands,” he said.

The project surveyed 1,000 hectares of mature rubber vine plants growing in the wetlands of Lake Argyle.

At Lake Kununurra, 23 sites extending over 1,655 hectares of land were targeted for weed control. The project successfully changed the weed status at three sites from ‘active’ to ‘monitored’. Targeted weeds at Lake Kununurra include Leucaena trees, fruit trees, Neem trees, Parkinsonia, Bellyache bush, Moringa trees and Coral vine.

Weed control was undertaken by staff from OLW, Department of Environment and Conservation (DEC), Department of Agriculture and Food WA (DAFWA) staff and volunteers.

OLW has been involved in a number of weed control projects in the region for several years working in partnership with Argyle Downs Station, Lissadell Stations, DEC, DAFWA, Kimberley Rangelands Biosecurity Association, Argyle Village, and Rangelands NRM WA.

For more information contact Dick Pasfield at Ord Land and Water.