MyWeedWatcher update: May 2017

Page last updated: Friday, 26 May 2017 - 12:18pm

Please note: This content may be out of date and is currently under review.

MyWeedWatcher was developed by the Department of Agriculture and Food, Western Australia (DAFWA) with funding support through Royalties for Regions. By using MyWeedWatcher you will be supporting your local community and biosecurity groups, defending Western Australia’s agriculture industry and natural environment from unusual or suspected exotic weeds.

Click here to subscribe to MyWeedWatcher updates

MyWeedWatcher presentations

Would you like a presentation on how to use MyWeedWatcher? We would like to show interested groups how to use MyWeedWatcher.

If you would like a presentation please contact Tamrika Lanoiselet on tamrika.lanoiselet@agric.wa.gov.au or 0428 949 103.

MyWeedWatcher training material

Training material showing you how to use MyWeedWatcher can be found at: www.agric.wa.gov.au/myweedwatcher-training-material

Detection of Noogoora burr in Joondalup

The spread of an invasive agricultural and environmental weed has been prevented in Western Australia by an observant bushwalker, who noticed Noogoora burr in the Joondalup Nature Reserve. More... (Invasive Noogoora burr discovered in Joondalup).

Noogoora burr female plant
The declared plant Noogoora burr was recently discovered and removed in Joondalup.

Further information on Noogoora burr: Noogoora burr: declared pest.

If you see this weed, please report it to DAFWA, preferably by using MyWeedWatcher, or by contacting the Pest and Disease Information Service (PaDIS) on 1800 084 881 or by emailing info@agric.wa.gov.au.

Weeds at the break of season

Instead of naming a ‘Weed of the Month’ here’s a reminder that the yearly growth cycle for many weeds has begun, thanks to the early and – at times - heavy rainfall over the summer and autumn months across many parts of the south-west.

Seeds of annual weeds such as bedstraw, doublegee and Paterson’s curse have started germinating and their seedlings are emerging and enlarging.

Many perennial weeds will be starting to emerge from underground rhizomes and corms; examples include arum lily, cape tulips, hoary cress, ragwort, silverleaf nightshade and skeleton weed.

Weed seedlings and early shoots can often look quite different from the mature flowering plant, so it is worthwhile becoming familiar with how weeds look in their early growth stages so they can be reported before they have started produce a new crop of fruits and seeds.    

Weeds that may be seen at break of season

Drones join the fight against invasive weeds

New incursions of exotic weeds into natural resources can present a range of control challenges for primary producers, the community, and government. Fortunately, some of these challenges are being met by rapid advances in drone technology.

The invasive weed water hyacinth (Eichhornia crassipes) was recently reported in the Serpentine River. The South American native can form thick mats on the surface of rivers and significantly reduce water quality. The initial response to the Serpentine incursion involved helicopter treatments of the infestation, and post treatment surveys undertaken by two individuals on the ground.

DAFWA staff quickly recognised that using a drone to undertake the surveys would be quicker, safer, easier, and a whole lot more fun than surveying from the ground.

The departments Boosting Biosecurity Defences agricultural weed surveillance project commissioned drone trails along 27km of the Serpentine River. 16,000 high resolution aerial images were collected during the survey. These images were embedded with GPS coordinates and taken at 3.5cm resolution. 

The aerial photographs were given to the local Serpentine-Jarradale Landcare Group for examination. Of the 16,000 images, the group identified 105 that contained water hyacinth. This information will be used to accurately map the distribution and density of weed infestations, which will significantly reduce the cost of managing these declared plants.

Although the drone trials have finished, the department still urges people to look out for the invasive weed, and report any sightings via the MyWeedWatcher app.

The drone trails, and the MyWeedWatcher app are part of the department’s $20 million Boosting Biosecurity Defences project, made possible by Royalties for Regions.

A recent Department of Agriculture and Food weed surveillance trial involved members of the Serpentine-Jarrahdale Landcare Group evaluating about 16 000 images taken along the Serpentine River from an unmanned drone, resulting in the identification of the
A recent Department of Agriculture and Food weed surveillance trial involved members of the Serpentine-Jarrahdale Landcare Group evaluating about 16 000 images taken along the Serpentine River from an unmanned drone, resulting in the identification of the invasive weed, water hyacinth.

Online weed identification courses

If you want to improve your skills at identifying weeds, DAFWA has published 23 short online weed identification courses, which are available at http://dafwa.moodle.com.au/externaluser/.

Weeds mapped in March and April 2017

At the end of April 2017 MyWeedWatcher had:

  • A total of 1431 installs on active devices
  • A total of 330 weed reports made 

In March and April, 64 weeds were mapped using MyWeedWatcher. They included three declared weeds (? unknown category internet advertising being followed up), 43 declared weeds (C3 management), nine permitted weeds, and nine unknown weed (unknown weeds did not have a photo to identify) (Table 1).

To find out more about declaration status and control categories of weeds and other organisms visit the Western Australian Organism List at: Western Australian Organism List (WAOL).

Table 1 Weeds mapped to MyWeedWatcher in March and April 2017. 

Common Name Pest LGA Declaration status Category
- [3573] Opuntia - Declared Pest - s22(2) ?
- [3573] Opuntia - Declared Pest - s22(2) ?
- [3573] Opuntia - Declared Pest - s22(2) ?
- [4613] Maireana CORRIGIN Permitted - s11 -
- Opuntia ficus-indica (L.) Mill. - Declared Pest - s22(2) C3
- Opuntia ficus-indica (L.) Mill. CLAREMONT Declared Pest - s22(2) C3
- Opuntia microdasys (Lehm.) Pfeiff. - Declared Pest - s22(2) C3
- Opuntia microdasys (Lehm.) Pfeiff. SWAN Declared Pest - s22(2) C3
- Opuntia monacantha Haw. - Declared Pest - s22(2) C3
- Opuntia monacantha Haw. - Declared Pest - s22(2) C3
- Opuntia vulgaris Mill. - Declared Pest - s22(2) C3
- Symphyotrichum subulatum (Michx.) G.L.Nesom ESPERANCE Permitted - s11 -
- Unknown CORRIGIN - -
- Unknown ESPERANCE - -
- Unknown ESPERANCE - -
- Unknown ESPERANCE - -
- Unknown ESPERANCE - -
- Unknown KALGOORLIE-BOULDER - -
- Unknown CANNING - -
- Unknown SOUTH PERTH - -
- Unknown SOUTH PERTH - -
apple of Sodom Solanum linnaeanum Hepper & P.-M.L.Jaeger DONNYBROOK-BALINGUP Declared Pest - s22(2) C3
Blackberry Rubus anglocandicans A.Newton ALBANY Declared Pest - s22(2) C3
Blackberry Rubus anglocandicans A.Newton ALBANY Declared Pest - s22(2) C3
Blackberry Rubus anglocandicans A.Newton ALBANY Declared Pest - s22(2) C3
Blackberry Rubus anglocandicans A.Newton ALBANY Declared Pest - s22(2) C3
Blackberry Rubus anglocandicans A.Newton MUNDARING Declared Pest - s22(2) C3
Blackberry Rubus anglocandicans A.Newton ALBANY Declared Pest - s22(2) C3
Blackberry Rubus anglocandicans A.Newton DONNYBROOK-BALINGUP Declared Pest - s22(2) C3
Blackberry Rubus anglocandicans A.Newton DONNYBROOK-BALINGUP Declared Pest - s22(2) C3
Blackberry Rubus anglocandicans A.Newton DONNYBROOK-BALINGUP Declared Pest - s22(2) C3
Blackberry Rubus anglocandicans A.Newton DONNYBROOK-BALINGUP Declared Pest - s22(2) C3
Blackberry Rubus anglocandicans A.Newton DONNYBROOK-BALINGUP Declared Pest - s22(2) C3
Blackberry Rubus anglocandicans A.Newton HARVEY Declared Pest - s22(2) C3
Blackberry Rubus anglocandicans A.Newton HARVEY Declared Pest - s22(2) C3
Blackberry Rubus anglocandicans A.Newton DONNYBROOK-BALINGUP Declared Pest - s22(2) C3
bridal creeper Asparagus asparagoides (L.) Druce GNOWANGERUP Declared Pest - s22(2) C3
caltrop Tribulus terrestris L. MELVILLE Permitted - s11 -
cane cactus Austrocylindropuntia cylindrica (Juss. ex Lam.) Backeb. ARMADALE Declared Pest - s22(2) C3
crownbeard Verbesina encelioides (Cav.) Benth. & Hook. f. ex A.Gray EXMOUTH Permitted - s11 -
doublegee Emex australis Steinh. WANNEROO Declared Pest - s22(2) C3
doublegee Emex australis Steinh. WANNEROO Declared Pest - s22(2) C3
Hudson pear (brown-spined) Cylindropuntia tunicata (Lehm.) F.M.Knuth WYNDHAM-EAST KIMBERLEY Declared Pest - s22(2) C3
Hudson pear (brown-spined) Cylindropuntia tunicata (Lehm.) F.M.Knuth COOLGARDIE Declared Pest - s22(2) C3
lantana Lantana camara L. SWAN Declared Pest - s22(2) C3
lantana Lantana camara L. SWAN Declared Pest - s22(2) C3
narrow leaf cotton bush Gomphocarpus fruticosus (L.) W.T.Aiton HARVEY Declared Pest - s22(2) C3
narrow leaf cotton bush Gomphocarpus fruticosus (L.) W.T.Aiton MANDURAH Declared Pest - s22(2) C3
narrow leaf cotton bush Gomphocarpus fruticosus (L.) W.T.Aiton DONNYBROOK-BALINGUP Declared Pest - s22(2) C3
narrow leaf cotton bush Gomphocarpus fruticosus (L.) W.T.Aiton NANNUP Declared Pest - s22(2) C3
narrow leaf cotton bush Gomphocarpus fruticosus (L.) W.T.Aiton - Declared Pest - s22(2) C3
narrow leaf cotton bush Gomphocarpus fruticosus (L.) W.T.Aiton - Declared Pest - s22(2) C3
narrow leaf cotton bush Gomphocarpus fruticosus (L.) W.T.Aiton DONNYBROOK-BALINGUP Declared Pest - s22(2) C3
narrow leaf cotton bush Gomphocarpus fruticosus (L.) W.T.Aiton DARDANUP Declared Pest - s22(2) C3
narrow leaf cotton bush Gomphocarpus fruticosus (L.) W.T.Aiton DARDANUP Declared Pest - s22(2) C3
narrow leaf cotton bush Gomphocarpus fruticosus (L.) W.T.Aiton HARVEY Declared Pest - s22(2) C3
narrow leaf cotton bush Gomphocarpus fruticosus (L.) W.T.Aiton HARVEY Declared Pest - s22(2) C3
narrow leaf cotton bush Gomphocarpus fruticosus (L.) W.T.Aiton DARDANUP Declared Pest - s22(2) C3
onion weed Asphodelus fistulosus L. ESPERANCE Permitted - s11 -
onion weed Asphodelus fistulosus L. ESPERANCE Permitted - s11 -
prickly paddy melon Cucumis myriocarpus Naudin BUSSELTON Permitted - s11 -
spear thistle Cirsium vulgare (Savi) Ten. DONNYBROOK-BALINGUP Permitted - s11 -
Sydney golden wattle Acacia longifolia (Andrews) Willd. ALBANY Permitted - s11 -
variegated thistle Silybum marianum (L.) Gaertn. - Declared Pest - s22(2) C3

 

Contact information

Tamrika Lanoiselet
+61 (0)8 9368 3443