Weeds of australia biosecurity queensland edition

See full list on keyserver. Native to sub-Saharan Africa, Madagascar, Mauritius and parts of the the Arabian Peninsula (i.e. Yemen). This species is widely distributed in the eastern parts of Australia.

It is most common in the coastal districts of southern Queensland and northern New South Wales. Also relatively common in the coastal districts of central and northern Queensland and recorded from a few locations in the Northern Territory. The flowering stems (i.e. culms) are 2-mm thick and somewhat wiry.

The leaves are very elongated (i.e. linear) with a leaf sheath, which partially encloses the stem, and a spreading leaf blade that may droop towards the ground. The leaf sheaths are hairless (i.e. glabrous), or have some tiny hairs along their margins, and the leaf blades may be flat or somewhat rolled (i.e. convolute). Where the sheath meets the leaf blade there is a fringe of tiny hairs or a very short membrane (- mm long) topped with tiny hairs (i.e. the ligule is ciliate or a ciliated membrane).

The elongated seed-heads are borne at the top of the stems and are initially thin in nature (i.e. spiciform), but become more open and narrowly pyramid-shaped (i.e. pyramidal) as they mature. Each of these branches bears numerous tiny, densely packe and elongated (i.e. lanceolate) or oval (i.e. elliptic) flower spikelets almost to its base. The dark green or greyish-green flower spikelets (- mm long) contain a single tiny flower (i.e. floret) inside two bracts (i.e. glumes).

The lower bract (i.e. glume) is 0. Flowering occurs throughout the year, but mainly during spring, summer and autumn.

The tiny seeds (i.e. grains or caryopses) turn yellowish-brown or reddish-brown in colour as they mature. These seeds (-mm long and up to mm wide) are oblong or egg-shape. These seeds become somewhat sticky when wet, and may be spread after becoming attached to animals, clothing and vehicles. They may also be dispersed by water, in mu and in contaminated agricultural produce (e.g. fodder and pasture seed lots).

Under the National Weeds Strategy, introduced plants were identified as Weeds of National Significance (WONS). Acacia nilotica (L.) Willd. Hill Mimosa niloticaL. Prickly acacia (Vachellia nilotica) is native to the arid and semi-arid regions of Africa and western Asia, the Indian sub-continent (i.e. India, Pakistan and Myanmar) and the Arabian peninsula (i.e.

Oman and Yemem). It has also occasionally been grown as a garden ornamental in the past, particularly in drier inland areas. Major infestations occur from Barcaldine north to Hughenden and west to Longreach, Winton and Julia Creek.

It is also naturalised to a lesser extent in the northern and eastern parts of the Northern Territory, in northern Western Australia, and in north-eastern South Australia. In the north-east of the Northern Territory is is found mostly on properties along the Barkly Highway. In northern Western Australia it has recently been found infesting a few areas near Kununurra in the Kimberley region. In north-eastern South Australia there is a single large infestation at cordillo Downs.

Scattered infestations are also present in other parts of Queensland (i.e. along the coast and in southern Queensland) and the Northern Territory (i.e. in the Katherine district). There are also reports of it being present in some inland regions of northern New S. Within these plant communities it inhabits floodplains, open plains, gullies, areas near waterways (i.e. creeks and streams) and areas near other water sources (i.e. dams and bores).

It also grows on recently cleared lan near stockyards and farm buildings, and along roadsides. A large spreading multi-stemmed shrub or small upright (i.e. erect) single-stemmed tree usually growing 2. The seedlings have two undivided seed leaves (i.e. cotyledons) that are borne above soil level and tend to fall off early. The first true leaves are twice-compound (i.e. bipinnate), but have only one or two pairs of branchlets (i.e. pinnae), each bearing several pairs of tiny leaflets (i.e. pinnules).

What is the cost of weeds in Australia? What does the Queensland Herbarium do? How much do invasive weeds cost Queensland? Weeds Australia is designed to connect you with knowledge to make informed decisions about managing invasive weeds within Australia. Read the red witchweed photo guide for more information on how to spot this weed.

Invasive plants ( weeds ), animals and ants have significant economic, environmental and social impacts on Queenslanders. Unless we take action now, the number of new weeds will. Biosecurity Queensland works closely with local governments, communities and other stakeholders to minimise these impacts.

Weeds in Australia – Weed identification tool Identifying weeds from specimens If you cannot identify the plant using online tools or invasive plant identification publications, you can take a sample to your regional Weed Spotter coordinator or send a sample to the Queensland Herbarium for analysis. Once you have confirmed the identity of a weed , you can then access information about how to control it. In Australia , the cost of weeds on agriculture has been estimated at $billion a year (excluding the impacts on the environment and community). In earlier times, the densely woolly parts of the inflorescence were used by Bedouins for stuffing saddle pads and cushions, hence the name “kapok bush” Soliman, Aerva javanica has many uses in human and aerav ethnomedicine. Australia is fortunate to be free from many weeds that may harm Australia ’s primary industries and environment.

NSW WeedWise contains key information to help users reduce the impact of over 3weeds in New South Wales. Weeds may seem like more of a nuisance than a threat, but the impact they have on Australia ’s agricultural production and environment is astounding. Weeds can pose significant biosecurity problems in their own right, be hosts to some agricultural and horticultural pests and diseases, and can also impact on the health of livestock.