| 翻訳と辞書 |
| Magnaporthe poae ： ウィキペディア英語版 |
Magnaporthe poae
''Magnaporthe poae'' is an ascomycete fungus which causes the turfgrass disease commonly known as summer patch, or Poa patch.〔( Cornell University Fact Sheet )〕 The disease occurs mostly on Kentucky bluegrass ''(Poa pratensis)'', Fescues ''(Festuca sp.),'' and on Annual bluegrass ''(Poa annua).''〔(Penn State Turfgrass )〕 Bentgrass (Agrostis sp.) may also become infected but shows very few symptoms and quickly recovers.〔 Summer Patch will usually become noticeable between June and September, although small signs can appear at any time but are not noticeable because the turfgrass can recover quickly.〔
== Symptoms ==
Symptoms of summer patch appear very similar to necrotic ring spot. This makes it very difficult to identify; if correct diagnosis is critical contact a local cooperative extension program or a qualified commercial lab.〔 Although it is difficult to identify alone, if one takes into account grass species and cultural practices a trained eye can diagnose summer patch. Summer patch will appear as irregular patches, rings (less than 10 inches in diameter), and crescents.〔 The "frog eye" appearance is often from the ''Poa annua'' being killed by the fungus while the middle living grass is Bentgrass. On lower cut turf, typically lower than 1.4 inches, summer patch is much easier to identify. A tug test can be performed and look for blackened roots. Yellowing and decline is often found on ''Poa annua'' in a mixed bentgrass area.〔
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「Magnaporthe poae」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.
|
|