翻訳と辞書 Words near each other ・ Spring Creek, Wilson County, Tennessee ・ Spring Cup ・ Spring Cup (darts) ・ Spring Cup (disambiguation) ・ Spring Cup (horse race) ・ Spring Cup (synchronized skating) ・ Spring Dale (Dublin, Virginia) ・ Spring Dale High School ・ Spring Dale Senior School ・ Spring Bay ・ Spring Bay Township, Woodford County, Illinois ・ Spring Bay, Illinois ・ Spring Bay, Saskatchewan ・ Spring Bears Love ・ Spring Beck (Norfolk) ・ Spring black stem ・ Spring bloom ・ Spring Bluff ・ Spring Bluff, Georgia ・ Spring Bluff, Missouri ・ Spring Bluff, Queensland ・ Spring bolt ・ Spring box ・ Spring Branch ・ Spring Branch Independent School District ・ Spring Branch School of Choice ・ Spring Branch, Comal County, Texas ・ Spring Branch, Houston ・ Spring break ・ Spring Break '83 Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Spring black stem ： ウィキペディア英語版 Spring black stem Spring Black Stem is a common fungal, foliar disease caused by ''Phoma medicaginis''. Spring Black Stem is most commonly found in alfalfa, but also attacks certain clovers. The fungus survives in stubble from previous cuttings and spreads easily by rainsplash, running water, and equipment. The disease is present in numerous alfalfa fields throughout the Northeast United States. == Host and Symptoms == The fungal pathogen ''Phoma medicaginis'' attacks the host Alfalfa. Numerous spots develop on the lower leaves, petioles, and stems. The disease produces small black spots on the leaves which eventually turn the leaf yellow, resulting in chlorosis and eventually cell death. Spots are usually worse on older leaves. Stem lesions are dark brown to black and may cut the stem all the way around its surface. Lesions on stems enlarge and may blacken large areas near the base of the plant. Affected stems are brittle and easily broken. When at its worst, entire stems can be blackened and killed. This can cause spread of the disease to the crowns and roots, also turning them black.〔(【引用サイトリンク】url=http://entoweb.okstate.edu/ddd/diseases/alfblackstem.htm )〕 When the fungus extends into the crown and root, it can cause crown and root rot. 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「Spring black stem」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.