File:Sorghum halepense spikelets6 NC - Flickr - Macleay Grass Man.jpg
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[edit]DescriptionSorghum halepense spikelets6 NC - Flickr - Macleay Grass Man.jpg | Introduced warm-season perennial large C4 grass; stems grow to 200 cm tall and arise from long stout rhizomes. Leaves are broad, with distinctive white midribs. Leaf sheaths and nodes are hairless. Flowerheads are large open panicles 25-45 cm long. Spikelets are paired (lower awned, upper unawned), 4-6 mm long, 2-flowered and often red/brown on one side and green on the other. Flowers in summer and early autumn. A native of the Mediterranean, it is a weed of disturbed areas such as roadsides, stream banks and crops. Most common on fertile soils, but sensitive to frosts. Classed as a noxious weed in many regions. Invades cropping land, is a host of crop pests and diseases, is a contaminant of seed crops and is a safety hazard along roadsides. Can be toxic to livestock; this is most likely if grazing stunted, wilted or young plants with hungry stock. Spread by seeds in contaminated hay, grain and seed and by rhizomes during flooding, cultivation or roadside grading. The most effective controls are hygiene and registered herbicides, as ploughing or pulling may aid its spread through the movement of rhizomes. |
Date | |
Source | Sorghum halepense spikelets6 NC |
Author | Harry Rose from Dungog, Australia |
Camera location | 32° 36′ 51.51″ S, 151° 36′ 30.74″ E | View this and other nearby images on: OpenStreetMap | -32.614309; 151.608538 |
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Licensing
[edit]This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by Macleay Grass Man at https://flickr.com/photos/73840284@N04/25987117513. It was reviewed on 5 November 2016 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
5 November 2016
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 11:16, 5 November 2016 | 4,000 × 3,000 (4.22 MB) | Josve05a (talk | contribs) | == {{int:filedesc}} == {{Information |Description=Introduced warm-season perennial large C4 grass; stems grow to 200 cm tall and arise from long stout rhizomes. Leaves are broad, with distinctive white midribs. Leaf sheaths and nodes are hairless. Flow... |
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot A650 IS |
Exposure time | 1/160 sec (0.00625) |
F-number | f/8 |
ISO speed rating | 80 |
Date and time of data generation | 18:07, 10 January 2016 |
Lens focal length | 7.4 mm |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
File change date and time | 18:07, 10 January 2016 |
Y and C positioning | Centered |
Exif version | 2.2 |
Date and time of digitizing | 18:07, 10 January 2016 |
Meaning of each component |
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Image compression mode | 5 |
APEX shutter speed | 7.3125 |
APEX aperture | 6 |
APEX exposure bias | 0 |
Maximum land aperture | 2.96875 APEX (f/2.8) |
Metering mode | Pattern |
Flash | Flash did not fire, compulsory flash suppression |
Supported Flashpix version | 1 |
Color space | sRGB |
Focal plane X resolution | 13,745.704467354 |
Focal plane Y resolution | 13,698.630136986 |
Focal plane resolution unit | inches |
Sensing method | One-chip color area sensor |
File source | Digital still camera |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 1 |
Scene capture type | Standard |