File:Medicago sativa habit3 (10603626625).jpg
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[edit]DescriptionMedicago sativa habit3 (10603626625).jpg | Introduced, yearlong-green, perennial, erect legume; to 1 m tall. Leaves have 3 leaflets, each to 30 mm long and with toothed margins near the tip; the stalk of central leaflet is longer than the two lateral ones. Flowerheads are racemes of 20-30, mostly purple, pea-like flowers. Pods are cylindrical and spineless, with 2-3 coils. Flowering is from spring to autumn. A native of the Mediterranean and Asia, it is sown on deep well-drained soils (e.g. alluvial flats) and is naturalised along roadsides. Does not like acid soils with a pHCa below 5 and is very sensitive to aluminium to depth. Deep-rooted, high quality, high production potential legume, it is suitable for hay, silage, grazing and cropping. Varieties vary in their winter dormancy and disease resistance. There are a number of leaf and crown diseases which can affect lucerne stands on the coast, so careful variety selection and stand management is essential. Poor basal cover of pure lucerne stands can lead to erosion. Weed competition can severely reduce lucerne establishment – plan well ahead. Causes bloat in cattle and photosensitisation in horses. Requires rotational grazing for best production and persistence. Cut or graze at 10 per cent flower or when crown shoots are 1-2 cm long on 50 per cent of plants. Do not graze below 5 cm. Back fencing aids persistence and production when used for grazing. |
Date | |
Source | Medicago sativa habit3 |
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@N04/10603626625. It was reviewed on 21 May 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
21 May 2015
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 07:16, 21 May 2015 | 1,600 × 1,200 (449 KB) | Amada44 (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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Camera manufacturer | KONICA MINOLTA CAMERA, Inc. |
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Camera model | DiMAGE G400 |
Exposure time | 1/250 sec (0.004) |
F-number | f/4.7 |
ISO speed rating | 50 |
Date and time of data generation | 09:17, 8 November 2006 |
Lens focal length | 5.6 mm |
Orientation | Normal |
Horizontal resolution | 72 dpi |
Vertical resolution | 72 dpi |
Y and C positioning | Centered |
Exif version | 2.2 |
Date and time of digitizing | 09:17, 8 November 2006 |
Meaning of each component |
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Image compression mode | 1.7 |
APEX brightness | 7.6 |
APEX exposure bias | 0 |
Maximum land aperture | 3 APEX (f/2.83) |
Metering mode | Center weighted average |
Light source | Unknown |
Flash | Flash did not fire, auto mode |
Supported Flashpix version | 1 |
Color space | sRGB |
Custom image processing | Normal process |
Exposure mode | Auto exposure |
White balance | Auto white balance |
Digital zoom ratio | 0 |
Focal length in 35 mm film | 34 mm |
Scene capture type | Standard |
Scene control | None |
Contrast | Normal |
Saturation | Normal |
Sharpness | Normal |
Subject distance range | Macro |