Download Hymenachne amplexicaulis (Olive hymenachne)

National
interests
State
interests
Local
interests
Conservation
& biodiversity
Riparian &
Aquatic
Agriculture &
Production
Residential &
Urban
Achievability
Extent
Priority score
Priority
Hymenachne amplexicaulis (Olive hymenachne)
5.0/5
4.0/5
4.0/5
4.6/5
5.0/5
2.8/5
2.2/5
1.4/5
1.2/5
30
Details
Description: A robust, upright perennial aquatic grass 1-2 metres with distinctive stem
clasping leaves.
Distribution: A major weed of all river systems and connected wetlands in the lower
Herbert. The heaviest infestations are in the Cattle, Palm and Trebonne Creek systems.
Impacts: Blocks drainage systems in cane farms. Readily invades and outcompetes
native plants in wetlands and waterways. Prevents fish passage and breeding opportunity
for key species like Barramundi
Management aims
Key projects: long term management projects and taking place in the Upper Cattle Creek,
Palm Creek and Tyto Wetlands reserve.
Delimitation
n/a
Prevention
Hygiene requirements for roadside management operators
underway. Ongoing communication of identified clean catchments
within this plan
Eradication
New outbreaks detected within prevention zones to be responded
to immediately
Intensive control
(transition)
Ongoing projects in Upper Cattle Creek, Palm Creek and TYTO
Wetlands reserve. Limited resources available to expand current
scope of control programs at present.
Impact reduction
Targeted maintenance of key fish passage areas in the Palm and
Cattle Creek systems and flood mitigation/infrastructure in keys
locations around the Ingham and Cordelia township areas will be
ongoing as funding allows.
Control Calendar
flower
seed
spray
mechanical
t
x
p
y
t
x
p
y
p
t
p
y
p
t
t
y
t
p
x
y
x
t
p
y
t
x
p
y
t
p
t
p
y
p
p
p
t
y
t
t
p
x
y
x
x
t
x
y
t
x
x
x
y
p
J
F
M
A
M
J
J
A
S
O
N
D
burn
x
Biology
Peak
Control
Optimal
x
t
First/last flush
t
Good
p
Occasional
p
Marginal
y
n/a
y
Not recommended
For more information call Hinchinbrook Shire Council environment and community services : 07 4776 4607
grass
aquatic
perennial
Hinchinbrook Shire Council Area Pest Management Plan 2013-17
Hymenachne amplexicaulis (Olive hymenachne)
Control
What do I need to do?
Report new outbreaks and sightings - help determine the extent of the pest
Come clean, go clean - keep weed and pest animal free areas clean
Be vigilant— remove all seeds (seedbank) and plants or all the pest animals from the zone
Think big and plan for the long term - reduce infestations to a size that can be eradicated
Maintain buffers and protect important places - protect assets and minimise the risk of spread For more information on management aims in each zone refer to Using the pest plan templates
Spread