File:Ambrosia_artemisiifolia_plant7_(11741895306).jpg
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Summary
DescriptionAmbrosia artemisiifolia plant7 (11741895306).jpg | Introduced, warm-season, annual, erect herb to 2 m tall. Leaves form a rosette when young; they are grey-green, deeply 2- to 3- divided, hairy underneath and up to 16 cm long. Cream to pale-green male flowers occur in terminal spikes or racemes above the female flowers, which are few in number. Flowering is from late summer to early winter. A native of North America, it is a weed of bare or disturbed areas, such as roadsides, stockyards and stream banks, occasionally pastures; more abundant in the northern half of the region. Can invade and suppress overgrazed pastures, especially if grazed by horses. Seed is spread by water, stock or in fodder. An indicator of disturbance and bare ground. Unpalatable; forms a serious human health hazard, causing hay fever and worsening asthma. Maintaining vigorous pastures with good ground cover is the simplest control method in pastures. Burning, herbicides, hand-pulling, slashing and biological agents can also aid control. |
Date | |
Source | Ambrosia artemisiifolia plant7 |
Author | Harry Rose from South West Rocks, Australia |
Licensing
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This image was originally posted to Flickr by Macleay Grass Man at https://www.flickr.com/photos/73840284@N04/11741895306. It was reviewed on 26 May 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
26 May 2015
Items portrayed in this file
depicts
some value
4 January 2014
image/jpeg
4169028cbf0839a44ba895edb561e439394d3ede
1,838,332 byte
2,592 pixel
1,944 pixel
File history
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 14:16, 26 May 2015 | 1,944 × 2,592 (1.75 MB) | Amada44 | Transferred from Flickr via Flickr2Commons |
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Metadata
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Camera manufacturer | NIKON |
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Camera model | E5400 |
Orientation | Normal |
Horizontal resolution | 300 dpi |
Vertical resolution | 300 dpi |
Software used | E5400v1.3 |
File change date and time | 11:07, 4 January 2014 |
Y and C positioning | Co-sited |
Exif version | 2.2 |
Unique image ID | f9d1e82b38f436d2a862b2674157f897 |
Keywords |
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IIM version | 4 |