k4378-10 : 無料・フリー素材/写真
k4378-10 / USDAgov
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | U.S. Department of Agriculture (USDA) Agricultural Research Service (ARS) range scientist Michael Ralphs records sheep's plant preferences as part of a study to improve cattle grazing pastures. Since sheep are less affected by larkspur, they may be used to reduce the amount of it in mountain pastures before cattle are allowed to graze. USDA photo. |
| 撮影日 | 2013-02-26 07:51:39 |
| 撮影者 | USDAgov |
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