If you locate Chilean needle grass anywhere in Tasmania, or if you find a plant that you think could be Chilean needle grass, immediately contact Biosecurity Tasmania on 03 6165 3777. Seeds mainly germinate in autumn and spring. Chilean needle grass can thrive in both high and low fertility sites and under moderate to severe moisture stress; Seeds prolifically and builds up large seed reserves in the soil, making it hard to eliminate large populations. Chilean needle grass can also pose a threat to natural tussock and grassland ecosystems. The flowering seed heads are a distinctive purplish colour and the seeds are very sharp at the point. Chilean needlegrass (Nassella neesiana) is one of the Weeds of National Significance (WoNS) in Australia, and is regarded as an environmental weed in Victoria, south-eastern New South Wales, the ACT, Tasmania and South Australia. It is threatening endangered native grasslands as well as productive pastures throughout significant regions of south-eastern Australia. In Australia it occurs in temperate regions with annual rainfall of more than 500mm, mainly in pastures, on roadsides and public land. The corona of the Texas needle grass contains long fine hairs, compared to that of Chilean needle grass in which the hairs are absent. Chilean needlegrass Nassella neesiana. It looks similar to many other grasses, both native and introduced, and can readily blend into the landscape. Chilean needle grass is a declared noxious weed and is classed as a restricted weed in all Victorian catchments. Probably introduced in the 1930s and 1940s from South America where it occurs in Argentina, Bolivia, Ecuador, Uruguay, southern Brazil and Chile. These help the … See. Seed spread is facilitated by the long, twisting awn and the sharply pointed seed head which together allow the seed to penetrate and 'burrow' into animal coats, fleece and clothing. Seed is formed about one month after flowering and most seed has been dropped by February. Chilean Needle Grass (CNG) is an erect, tufted perennial tussock that can grow up to 1m in height when left ungrazed. Hairless or sparsely hairy, flat or somewhat inrolled, to 30cm long and 5mm wide, with 3mm long smooth ligules. Chilean Needle Grass is named for its sharp, pointed seeds. Leaves are hairless or sparsely hairy, flat and somewhat inrolled, to 30 cm long and 5 mm wide, with 3 mm long smooth ligules. Summary. The seeds are spread by farm machinery, clothing or livestock, by road-side mowing and earthmoving equipment, and by floodwaters. Chilean Needle Grass (CNG) is an invasive perennial weed that lowers the productivity of grazing pastures as it is not palatable. feedback form or by telephone. Origin and distribution. The leaves are 1 to 5 mm wide, flat and strongly ribbed on their upper surface, with leaf edges that are rough to touch. It poses a significant threat to the sustainability of New Zealand’s agricultural The vigour of Chilean needle grass can be partly explained by its efficient system of seed production. Chilean needle grass is becoming a serious pasture and environmental weed in south-eastern Australia. Two types of seeds are produced by Chilean needle grass: Normal seeds (Figures 5 and 6) are produced at flowering. It produces seeds from three points on the plant: the panicle seed, mid-stem seed at leaf joins and at the base of the plant. Its sharp needle like tip can penetrate the skin and muscle of stock. August 2012 - Scoop NZ. Chilean needle grass - Stopping its spread in NZ. The illustration below compares Australian speargrass (Austrostipa spp. ) They are mostly 8 to 10mm long, with a 1mm long corona and a 60 to 90mm long awn which is twice bent, with 15 to 30mm to the first bend. The presence of Chilean needle grass may reduce land value. It produces seeds in its flowers and in the nodes and bases of the flowering stems. It is threatening endangered native grasslands as well as productive pastures throughout significant regions of south-eastern Australia. Do not chip out large patches of Chilean needle grass where a seed bank has built up: any soil disturbance will cause the germination of seeds. Chilean needle grass is an invasive perennial tussock-forming grass that may grow to 50 cm high. Chilean needle grass panicle seed is large and heavy and will not travel very far in the wind, maybe only a few metres. The stem seeds are located at the nodes (swellings which give rise to leaves) of the flowering stem and are concealed by the leaf sheath which has been removed for the photo (Figure 7). Chilean Needle Grass, sometimes mistaken for native spear grass, is a perennial tussock-forming grass and is one of 32 declared Weeds of National Significance (WoNS) in Australia. Keep up to date with advice and info on how to protect your property from the spread of CNG. The presence of Chilean needle grass has a devastating impact on agriculture. Spread is by seed. These are the best feature to use in identification. If possible avoid working in an area infested with Chilean needle grass until it has been controlled. Chilean needle grass is a tufted (a bunch or collection of grass growing together at the base) plant growing up to 1m. Chilean needle grass grows well in dry, hard, hill country areas with light soil, heavily grazed pasture and bare ground where there's less competition from desirable pasture plants. Chilean needle grass also possesses self-fertilised stem seeds called cleistogenes. Chilean needle grass is a declared noxious weed and is classed as a restricted weed in all Victorian catchments. Agricultural Workforce Resilience Package, Identifying, Selling & Moving Livestock/NLIS, COVID-19 Help for Agricultural Businesses, Traveller's Guide to Tasmanian Biosecurity - What You Can and Can't Bring into Tasmania, Development Planning & Conservation Assessment, Land Information System Tasmania (theLIST), Spatial Discovery - Educational Resources for Schools, Water licence and dam permit applications, Managing Wildlife Browsing & Grazing Losses, Water Information System of Tasmania (WIST), Chilean Needle Grass - Herbicides for Control, Alligator Weed - Alternanthera philoxeroides, Common heliotrope - Heliotropium europaeum, Managing Wildlife Grazing and Browsing Losses, Herbicides for Chilean Needle Grass Control, Statutory Management Plan for Chilean Needle Grass, Weed and Disease Planning and Hygiene Guidelines, Herbicides for Chilean Needle Grass Control. A Chilean needle grass adult plant is unpalatable to stock during the flowering period. In addition to the normal flower (panicle) seeds, Chilean needle grass produces hidden seeds which are formed in the nodes and bases of the flowering stems. Chilean needle grass produces lots of seeds, and develops a long-lived seed bank 3. it can produce flowers in the first season 4. seed heads emerge during late spring 5. most seeds have dropped from the plant by late February 6. seeds can germinate year round, but m… Chilean needle grass seeds are approximately 7 – 9 cm in length and light brown with a distinctive dart-like appearance. 16/07/2019 2:31 PM, Image: chilean needle grass seed panicle. Floodwaters play a significant role in seed dispersal. These seeds remain viable for many years. The seeds consist of a hard, sharply pointed seed head which is barbed with backward-facing hairs and a long, twisted, corkscrew-like awn. Normally 99% of the seeds in … Its flowers have a purple tinge and ripen into hard, sharp seeds with long twisting tails. It is also known in rural areas in the south of the state and on Flinders Island, Detailed management and control guidelines for Chilean needle grass can be found in the Chilean Needle Grass Control Guide. Chilean needle grass is a vigorous competitor and poses a significant threat to native grasslands and agricultural enterprises in Tasmania. Learn to identify Chilean needle grass, regularly check for it and act immediately to remove it. Chilean needle grass grows well in dry, hard, hill country areas with light soil, heavily grazed pasture and bare ground where there’s less competition from desirable pasture plants. Probably introduced in the 1930s and 1940s from South America where it occurs in Argentina, Bolivia, Ecuador, Uruguay, southern Brazil and Chile. The awns do not readily detach from the seed and they often twist together at maturity. It is also a declared weed of National Significance. 697 likes. used to identify both Chilean and Texas needle grass is the corona (a swollen crown) at the join between the seed body and the awn. Questions concerning its content can be sent using the Chilean needle grass seeds are approximately 7 – 9 cm in length and light brown with a distinctive spear-like appearance. Chilean Needle Grass, sometimes mistaken for native spear grass, is a perennial tussock-forming grass and is one of 32 declared Weeds of National Significance (WoNS) in Australia. The seeds of Chilean needle grass are pale brown when mature, warty in texture, and hairless except along the midrib and near the callus (the base of the seed). Chilean needle grass can be controlled with the application of a herbicide. During the warmer months large amounts of unpalatable flower stalks are produced, with very little leaf material, resulting in a severe reduction of summer stock carrying capacity. It tolerates drought and heavy grazing, giving it great potential to spread and over-run existing vegetation. Last published on: Chilean Needle Grass, sometimes mistaken for native spear grass, is a perennial tussock-forming grass and is one of 32 declared Weeds of National Significance (WoNS) in Australia. The seeds have very sharp points that have been reported to penetrate and damage the fleece, skin and eyes of livestock. The persistent seed bank makes Chilean needle grass difficult to control. As each square metre of infestation produces up to 12,000 seeds, it can quickly degrade native grasslands and pastures. It looks similar to many other grasses, both native and introduced, and can readily blend into the landscape. The seeds of native Australian speargrasses (Austrostipa sp.) Chilean needle grass is an extremely invasive grassy weed. Its leaves are bright green and harsh to the touch. The following information is for the control of small populations of Chilean needle grass in urban environments including roadside reserves and native grassland situations. Chilean needle grass is often found in the same areas as serrated tussock. One of Australia's worst weeds, it is a major pest in Victoria and New South Wales and is also found in South Australia and Tasmania. Chilean needle grass spreads easily and causes destruc-tion in many ways. The flowering head is a loose, sometimes interrupted panicle to 40cm long (Figure 4). A Weed of National Significance in Australia, Chilean needle grass is a vigorous competitor in agricultural, natural and urban environments. Chilean needle grass seeds can persist in the soil for many years even if further seed input is prevented. Prescribed measures for the control of noxious weeds, Illegal online trade of noxious weeds in Victoria, Victorian Government role in invasive plant and animal management, Weed warning after drought, fire and flood. It is also a declared weed of National Significance. native grass (top illustration) to the Chilean needle grass (below illustration) leaves are 1-5mm wide and 30cm long; flower heads droop, 40cm long; seeds are 8-10mm long with a … Chilean Needle Grass is a WoNS because of its ability to spread … It is spread by animals rather than wind and has a characteristic annular ring below the seed head. Regularly monitor known Chilean needle grass infested areas. The potential distribution of Chilean needle grass in Australia is estimated to exceed 40 million hectares. Learn to identify Chilean needle grass, regularly check for it and act immediately to remove it. To the extent permitted by law, the Tasmanian Department of Primary Industries, Parks, Water and Environment (including its employees and consultants) excludes all liability to any person for any consequences, including but not limited to all losses, damages, costs, expenses and any other compensation, arising directly or indirectly from using information or material (in part or in whole) contained on this website. Chilean needle grass is a master of disguise. Chilean needle grass (Nassella neesiana) is an erect, tufted perennial grass of temperate South American origin which is considered an invasive pest plant in both Australia and New Zealand. Named for its sharp, pointed seeds, it affects pastures and Chilean needle grass is a Weed of National Significance and is considered to be one of the worst weeds in Australia because of its invasive nature, potential for spread, and economic and environmental impacts. Chilean needle grass flowers mainly from September to December but can flower year round. Chilean needle grass panicle seed can be dispersed by water along creeks and drainage channels. spread of the species. Control efforts should consider that: 1. adult plants are long-lived and very hardy 2. Up to 15,000 seeds per square meter can be found in the seed bank beneath infestations. Currently Chilean needle grass populations are found in urban areas around Hobart, particularly the Eastern shore, where it can be found along roadside reserves and nature strips. Avoid the introduction of Chil ean needle grass. Chilean Needle Grass. They enable the plant to survive despite grazing, slashing and fire. Figure 4. Chilean needle grass is capable of producing seed by three means: 1. The seed is enclosed by 2 bracts (glumes) which are 16 to 25mm long, purplish in colour and taper to a point (Figure 5). The sharp seeds cause damage to the skin, fleece and eyes of stock. This infestation of Chilean needle grass was sprayed at 3L/ha 10 months earlier. These 'stem seeds' are self-fertilised and account for about one-quarter of total seed production. The earliest Victorian record is from Northcote in 1934. Chilean needle grass is a tussocky perennial in the speargrass group of grasses growing to about 1 m high. It can reduce pasture productivity, contaminate crops and hay, and seeds can injure livestock, in particular sheep. Generally unpalatable to livestock and therefore reduces available grazing area. Encourage the growth of competition in infested areas. Seed spread is facilitated by the long, twisting awn and the sharply pointed seed head which together allow the seed to penetrate and 'burrow' into animal coats, fleece and clothing. Chilean needle grass is a declared noxious weed throughout Victoria. The seeds consist of a hard, sharply pointed seed head which is barbed with backward-facing hairs and a long, twisted, corkscrew-like awn. Refer also to, (outer casing of seed, the 'glume', removed to reveal detail.). Chilean Needle Grass is a WoNS because of its ability to spread quickly and out-compete pasture and native grasses. It contaminates feed and wool, and reduces productive pasture grasses. Chilean needle grass (Figure 3) is a tussocky perennial in the speargrass group of grasses growing to about 1m high. Long term control aims to stop the needle grass from seeding, and to reduce the soil seed bank. Ensure that the base of the plant and as much of the root as possible is removed. It is a serious weed of pastures and native grasslands. These seeds allow the plant to reproduce even if flowering has been prevented. Aerial seeds; 2. Small infestations and isolated Chilean needle grass plants can be chipped out with a mattock preferably before the plants set seed. This plant has an extremely large potential distribution across native ecosystems and grazing areas in Australia. 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