Sudan grass - Sudan grass (English spelling)

Japanese: スーダングラス - すーだんぐらす(英語表記)Sudan grass
Sudan grass - Sudan grass (English spelling)

It is an annual grass of the family Poaceae (APG classification: Poaceae). It is native to Africa and was first discovered in the Sudan region, hence the name. It is a species closely related to sorghum, grows to a height of 2 meters, and grows into a clump-like shape with many branches from the ground. The leaf blade is 30-50 cm long and 1-3 cm wide. In early autumn, it produces panicles with sparse ears at the end of the stem. The seeds are 3-4 mm long and elliptical, and are wrapped in shiny glumes that are pale yellow to pale purple. It is cultivated for its foliage as feed, and is mainly used as hay and silage (buried feed). When using green cutting, the young foliage may contain hydrocyanic acid, so it should be dried before feeding. It was introduced to the United States in the early 20th century, where the variety was improved, and introduced to Japan after World War II. It is popular as a pasture grass for warm climates, and has become naturalized in vacant lots in the Kanto region and west.

[Hoshikawa Kiyochika August 20, 2019]

[Reference] | Sorghum

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

イネ科(APG分類:イネ科)の一年草。アフリカ原産で、最初に発見されたのがスーダン地方なのでこの名がある。モロコシの近縁種で、高さ2メートルになり、地際から多くの枝を出して株状となる。葉身は長さ30~50センチメートル、幅1~3センチメートル。初秋、茎の先に、まばらに穂をつける円錐(えんすい)花序を出す。種子は長さ3~4ミリメートルの楕円(だえん)形で、淡黄色から淡紫色の光沢のある穎(えい)に包まれる。茎葉を飼料とするため栽培され、おもに乾草やサイレージ(埋蔵飼料)として利用する。青刈りを利用する場合には、若い茎葉に青酸が含まれることがあるので、いったん乾かしてから与える。20世紀初めにアメリカに導入され、品種の改良がなされ、日本には第二次世界大戦後に導入された。暖地用牧草として普及し、関東地方以西では空き地などで野生化もしている。

[星川清親 2019年8月20日]

[参照項目] | モロコシ

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