Territory Stories

Weed management plan for gamba grass (Andropogon gayanus) : 2010



Weed management plan for gamba grass (Andropogon gayanus) : 2010

Other title

Replaced by Weed management plan for Andropogon gayanus (Gamba Grass) 2014


Northern Territory. Department of Natural Resources, Environment, The Arts and Sport. Natural Resources Division


E-Publications; E-Books; PublicationNT; Weed management plan




This Weed Management Plan forms part of a strategic approach to gamba grass (Andropogon gayanus) management in the NT, with the overall aim being to mitigate the damage caused by gamba grass in relation to the natural environment, property and infrastructure and public health. A comprehensive weed risk management assessment found gamba grass to be a very high risk weed where potential exists for successful management.


Made available by via Publications (Legal Deposit) Act 2004 (NT).

Table of contents

1. Introduction -- 2. Aim and objectives -- 3. Gamba grass declaration status -- 4. Current distribution -- 5. Management requirements -- 6. Eradication and control methods -- 7. Developing a weed seed spread prevention program -- 8. Tracking progress and judging success -- 9. Support and information for land managers -- Appendix A: Summary of management requirements and related actions – gamba grass in class A/C zone -- Appendix B1: Summary of management requirements and related actions – gamba grass in class B/C zone – small landholdings 20ha or less -- Appendix B2: Summary of management requirements and related actions – gamba grass in class B/C zone – large landholdings of more than 20ha -- Appendix C: Summary of management requirements and related actions – gamba grass in public transport or service corridors -- Appendix D: Suggested gamba grass monitoring report template -- Appendix E: Targets -- List of Figures -- List of Tables




Andropogon gayanus; Control; Gamba grass; Weeds

Publisher name

Northern Territory Government

Place of publication



2010 edition


Weed management plan

Now known as

Weed management plan for Andropogon gayanus (Gamba Grass) 2014

Previously known as

Weed management plan for gamba grass (Andropogon gayanus) : draft August 2009


iii, 31 pages : colour illustrations and maps ; 30 cm

File type





Attribution International 4.0 (CC BY 4.0)

Copyright owner

Northern Territory Government



Related materials

Submission to the review of the Weed Management Plan for Andropogon Gayanus (Gamba grass) 2010

Related links

https://hdl.handle.net/10070/265105 [Weed management plan for Andropogon gayanus (Gamba Grass) 2014]; https://hdl.handle.net/10070/300740 [Weed management plan for Gamba Grass (Andropogon gayanus) - August 2018]

Parent handle


Citation address


Page content

Weed Management Plan for Andropogon gayanus (Gamba Grass) 19 a) must be selected to minimise the risk of spread (on or off-site); b) must to be regularly checked for weed seedlings which may have germinated from seeds washed off vehicles etc. Any weeds should be controlled immediately; and c) should be sited in degraded areas to minimise risk of undetected weed spread. Where it is impractical to establish a wash-down facility, consideration is to be given to adopting alternative options and solutions to manage seed transfer. 7.3 Avoiding weed seed transfer It is illegal to transport declared weeds. You must dispose of any weed material on site. Burning will destroy vegetative plant material and also render most seeds unviable. Seed transfer can also occur through the transport and sale of contaminated products. Within the B/C zone gamba grass may be used as fodder in certain circumstances (refer section 5.3.3.), however gamba grass must not be sold as hay or transported outside of the property on which it was grown. Care must also be taken to ensure that any gravel, sand or other product moved between properties is free of gamba grass and seeds. 7.4 Integrated natural resource management Weed management should be closely linked to broader natural resource management at the property and catchment levels. Weed spread and germination can be enhanced in degraded areas, such as those impacted by erosion, wild fire and feral animals. These issues must be addressed in a weed seed spread prevention program if they are present in the area being managed. 8. Tracking progress and judging success A property weed management plan should include realistic time frames and goals, recognising that achievements, particularly with regards to established populations, may only become evident in the long term. It is important to document weed occurrences and the control methods used so that success, or failure, can be critically analysed. Accurate records can enable a management program to be reworked or fine tuned depending on the need (refer Appendix D). 8.1 Local level 8.1.1 Follow up control A key element in any weed management program is inspecting and, if necessary, re-treating eradication areas, buffers and containment areas. Areas where herbicide has been applied must be revisited no less than four weeks after spraying but prior to seed set in May to ensure that the plant is dead. Follow up control to kill any regrowth/new germinants is to be done for at least three years after treatment, and areas are to be checked early in each calendar year prior to seed set after eradication is thought to have been achieved. Continual maintenance is imperative. Reinfestation may only be one growing season away if vigilance is not maintained. 8.1.2 Maintaining records It is important to keep track of what is happening in the bigger picture i.e. is the weed control being undertaken contributing to the objectives of this plan? To accurately determine if, and what, progress is being made, records should be maintained that show weed control activities (outputs) and the results of the activities (outcomes).

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