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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Privet as an invasive plant ： ウィキペディア英語版 Privet as an invasive plant Privet refers to any of a number of shrubs or trees in the genus ''Ligustrum''. The genus contains about 50 species〔Webb, C. J.; Sykes, W. R.; Garnock-Jones, P. J. 1988: Flora of New Zealand. Vol. IV. Naturalised Pteridophytes, Gymnosperms, Dicotyledons. 4. Christchurch, New Zealand, Botany Division, D.S.I.R..〕 native to the Old World and Australasia. Many members of the genus are grown as ornamental plants in parts of the world. Several species of privet have become a nuisance in regions outside its range. In these conditions it is most commonly found wherever there is disturbed soil, soil that is physically perturbed from its natural state through fire or mechanical machinery, such as along fencerows, old fields, ditches, and forest margins.〔Maddox, V., J. Byrd, Serviss, B. (2010). Identification and Control of Invasive Privets (''Ligustrum'' spp.) in the Middle Southern United States. ''Invasive Plant Science and Management''. 3:482-488.〕 Privet grows particularly well in riparian forests, which are found throughout the southeastern United States.〔Hanula, J.L, Horn, S., Taylor, J.W. (2009). Chinese privet (''Ligustrum sinense'') Removal and its Effect on Native Plant Communities of Riparian Forests. ''Invasive Plant Science and Management'' 2:292-300. 〕 Although tolerant of varying soil and light conditions, including a tolerance for shade, privet survives best in mesic soil with abundant sunlight.〔Urbatch, L. Chinese Privet: Plant Guide. ''USDA and NRCS''.Retrieved March 15, 2013〕 ==Economic and cultural effects== Privet is considered a huge problem in New Zealand and the east coast of Australia (''Ligustrum lucidum'', ''Ligustrum sinense'' and ''Ligustrum vulgare''). It is banned from sale or cultivation in New Zealand because its pollen is known to cause asthma and eczema in sufferers. Privet can be removed by contacting local government agencies to report its presence. When privet is invasive species, the cost of controlling and removing privet is economically detrimental, something that is problematic for conservation efforts.〔 The annual cost of removing Chinese privet in the United States is estimated to be $737 per acre when a mulching machine and two-person herbicide application crew are employed.〔Environmental Assessment: Zebra Project (Timber Scale). (2010) ''USDA''. Retrieved March 15, 2013〕 The cost for foliar glyphosate applications on privet is approximately $130 per acre for chemical and surfactant treatments.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Privet as an invasive plant」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.