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：2019-001-0001-049

藏品描述：茄科僅番茄與馬鈴薯易感染本病害。本病經由空氣流動、風雨吹彈飛濺、或人畜攜帶，於短期內快速傳播。低溫高濕之環境最適合發病，陰冷降雨時發病最為嚴重，如無事先防範，全園植株兩週內即可能會全部焦枯死亡。番茄全株均可被感染，幼苗染病後，全株將急速枯萎。莖部及葉柄被害時，起初出現淡褐色斑點，而後呈環狀黑褐色之稍凹陷病斑，俗稱黑骨病，嚴重時被害部位以上之組織枯萎下垂。

Found on tomato and potato plants, late blight is caused by the fungus Phytophthora infestans. The disease occurs later in the growing season with symptoms often not appearing until after blossom. Late blight first appears on the lower, older leaves as water-soaked, gray-green spots. As the disease matures, these spots darken and a white fungal growth forms on the undersides. Eventually the entire plant will become infected. Crops can be severely damaged. The spores are introduced by infected tubers, transplants or seeds. Wind will also carry the disease from nearby gardens. Warm temperatures and wet, humid conditions promote its rapid spread.