File:Nassella trichotoma ligule1 QNR (15279381634).jpg
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[edit]DescriptionNassella trichotoma ligule1 QNR (15279381634).jpg | Introduced, cool-season, perennial, dense, tussocky grass to 60 cm tall and with short soft hairs on nodes. Leaves are bright green, very fine and rough to the touch; erect when young, but drooping in larger plants. Ligules are short, white membranes 0.5–2.5 mm long. Flowerheads are open panicles to 25 cm long; they break off at maturity and blow along. Spikelets are 1-flowered and have 2 purplish glumes. Lemmas are 1.5-2 mm long and about as broad, with a nearly straight 2-3.5 cm long awn attached off-centre. Flowers in spring. A native of South America, it is mostly found on light soils in areas of disturbance (e.g. roadsides and overgrazed pastures), low productivity and/or ground cover. A Weed of National Significance, it readily invades any sort of grassy vegetation. Extremely poor feed value; animals forced to graze it may eventually starve to death. Plants and seed banks are long lived, but seedlings are susceptible to competition. Managed with a combination of methods: competitive pastures; windbreaks; minimising soil disturbance; machinery, fodder and livestock hygiene; cropping; physical removal; and registered herbicides. |
Date | |
Source | Nassella trichotoma ligule1 QNR |
Author | Harry Rose from South West Rocks, Australia |
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://www.flickr.com/photos/73840284@N04/15279381634. It was reviewed on 20 May 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
20 May 2015
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current | 15:02, 20 May 2015 | 2,000 × 1,500 (359 KB) | Amada44 (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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Camera manufacturer | Canon |
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Camera model | Canon PowerShot A650 IS |
Exposure time | 1/320 sec (0.003125) |
F-number | f/8 |
ISO speed rating | 80 |
Date and time of data generation | 11:33, 8 November 2014 |
Lens focal length | 7.4 mm |
Width | 2,000 px |
Height | 1,500 px |
Orientation | Normal |
Horizontal resolution | 180 dpi |
Vertical resolution | 180 dpi |
Software used | PaintShop Pro 14.00 |
File change date and time | 11:47, 29 November 2014 |
Exif version | 2.2 |
Date and time of digitizing | 11:33, 8 November 2014 |
Meaning of each component |
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Image compression mode | 5 |
APEX shutter speed | 8.3125 |
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 |
Unique image ID | 340134e1ef3fe5c2fb5e15aec89f9930 |
Y and C positioning | Centered |
Supported Flashpix version | 1 |
Image width | 4,000 px |
Image height | 3,000 px |
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IIM version | 4 |