Sonchus oleraceus plant NC 9 : 無料・フリー素材/写真
Sonchus oleraceus plant NC 9 / Macleay Grass Man
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | Introduced cool-season annual C3 herb 30-200 cm tall. Stems are erect, hollow and exude white latex if damaged. Leaves are thin, soft, 6-35 cm long, with irregularly toothed margins ending in soft spines. Flowerheads are panicles, with heads (5-20 mm wide) containing yellow petal-like flowers. Fruits are ribbed, wrinkled and topped with a tuft of silky hairs. Flowers throughout the year, but especially winter and spring. A native of Europe, it is a weed of disturbed areas, such as roadsides, stockyards, dairy laneways and cropping. It is well adapted to a wide range of soils and environments, but is drought and waterlogging intolerant. Edible as a vegetable, either cooked or raw. Highly palatable and nutritious, but suspected of occasionally causing photosensitisation in cattle. Only a nuisance weed of pastures in difficult to access areas, as it is readily grazed by stock where they can reach it. Can be a problem in reduced-till and stubble retention systems due to herbicide resistance. Can act as an alternative host to pest and diseases of crops. Can be controlled by grazing, chipping, cultivation and herbicides. For control, it is essential to prevent its prolific seed production. Fruits are dispersed long distance on the wind. |
| 撮影日 | 2022-07-19 13:42:12 |
| 撮影者 | Macleay Grass Man , Dungog, Australia |
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| カメラ | Canon PowerShot G5 X , Canon |
| 露出 | 0.006 sec (1/160) |
| 開放F値 | f/8.0 |
| 焦点距離 | 10584.13924 dpi |