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：2019-001-0001-074
藏品描述：一般自葉片背面發生，蔓延至表面甚至被覆全葉，枝梢及果實亦有。病菌之菌絲層與煤病顏色形狀相同，發生較久後容易剝取。被害柑橘生長受阻，花芽減少，產量低落。
Helicobasidium mompa is the causal agent of this fungal disease. The infection begins from the underside of leave and progresses to the whole leaves, shoots and fruits. Mycelia growth will cover the surface of leave like sooty molds that can be removed easily. The growth of affected citrus will be retarded, flowering decreases and the yield loss is significant.