作者：曾惠中
類別：圖書文獻類 - 手稿
材質：紙質
年代：1969~1969
尺寸：長:24.6 x 寬:20.5 (cm)
藏品來源：曾惠中捐贈
登錄號：2019-001-0001-029
藏品描述：水稻於種子萌芽時，子葉尚未形成即枯死。成株葉片初呈褐色小斑點，再擴大成胡麻粒狀之暗褐色病斑，具淡黃色暈環。葉鞘受害則呈不規則之淡褐色大病斑。節部、穗及枝梗被害時，呈暗褐色或淡褐色。
Brown spot is a fungal disease that can infect both seedlings and mature plants. This disease is more severe in areas of poor management. The symptoms of the disease appear on the coleoptile, the leaves, leaf sheath and also the glumes. On the leaves the spots vary in size and shape from minute dots to circular, eye shaped or oval spots is seen in the central portion.