restricted matter category mimosa invisa (giant sensitive ......hooked prickles along the angles....
TRANSCRIPT
Description: A shrubby or sprawling annual that has four angled branches with a line of sharp,
hooked prickles along the angles. Unlike commons sensitive weed, giant sensitive Plant (GSP) grows
as a small to large shrub.
Distribution: Widespread distribution within the Hinchinbrook Shire, often associated with road and
rail transport, areas of disturbance or fallow and unused land.
Impacts: GSP will choke up cane, other crops and grasslands causing loss of crop and pasture
production. The seed of GSP can remain viable for many years even decades so any measures to
prevent spread and establishment in new areas is worthwhile.
Key projects: A joint project between HSC, HCPSL and Terrain will be conducted in April/May
Prevention
Prevent the establishment of GSP in new areas through an industry led,
catchment wide management program. Ensuring best management practice
hygiene measures are in place when moving to clean areas or between
properties will reduce the opportunities for spread.
Asset protection
Giant Sensitive Plant is problematic for sugar production and grazing .
Annual surveys of known infestations will assist to determine locations which
are free from this weed. A psyllid biocontrol agent is present in the wet
Tropics which can be effective at reducing seed production. The
effectiveness of the psyllid and its distribution in the lower Herbert are not
well known.
Although GSP is widespread across the lower Hebert, infestations usually
occur as localised outbreaks which can be managed annually though routine
management. Careful management of cane transport infrastructure such as
hard stand and rail areas will assist reduce spread.
The ongoing implementation of hygiene measures for roadside management
operators and within the sugar industry will assist to reduce impacts.
Pri
ori
ty
De
tail
s
flower t p x x x p
seed t p x x x p
spray t x x x t p
mechanical t t p t x t t p manual x x x t p p
biocontrol t x x x x t p p t x x x
J F M A M J J A S O N D
Mimosa invisa (Giant sensitive plant)
Biology x
Peak t
First/last flush p
Occasional y
n/a
Control x
Optimal t
Good p
Marginal y
Not recommended
C
on
tro
l C
ale
nd
ar
Ma
na
ge
me
nt
req
uir
em
en
ts 1 2 3 4 5
Restricted matter category
6
0.0/5 1.5/5 4.0/5 4.3/5 2.8/5 3.8/5 2.0/5 3.0/5 3.3/5
53
Hin
ch
inb
roo
k L
oca
l G
ove
rnm
en
t A
rea
Bio
se
cu
rity
P
lan
te
rrestria
l w
oo
dy
an
nu
al
Mimosa invisa (Giant sensitive plant)
Control
Spread
What is my biosecurity obligation?
Prevention zone
Ensure any machinery or vehicles moving from the infested areas
are free from plant material and soil.
Asset protection
zone
Ensure best practice weed hygiene measures are in place to reduce
risk of spread to new locations. Maintain weed free areas. Identify
high value assets and protect them from impacts where possible.
Manage infestations systematically from top of catchment down.
Ensure best practice weed hygiene measures are in place to
reduce risk of spread to new locations. Maintain weed free areas.For more information on management aims in each zone refer to Using the Biosecurity Plan templates
Restricted matter category
AGRICULTURAL ASSETS
54