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| 題 名 | 茶樹枝枯病緊急防治用藥劑篩選田間試驗及病害管理研究=Fungicide Screen for the Emergent Control on Twig Die-Back Diseases of Tea Plants |
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| 作 者 | 廖增祿; 王兩全; | 書刊名 | 臺灣茶業研究彙報 |
| 卷 期 | 15 1996.05[民85.05] |
| 頁 次 | 頁47-56 |
| 分類號 | 434.818 |
| 關鍵詞 | 茶; 茶樹枝枯病; 剪枝; 三得芬; Tea; Die-back disease; Pruning; Tridemorph; |
| 語 文 | 中文(Chinese) |
| 中文摘要 | 為緊急防除茶樹枝枯病,選定四種藥劑,配合中剪、臺刈等管理方法,於竹山茶園進行試驗,在為期一年十個月試驗期間共施藥29次,各處理中以茶樹實施臺刈後噴施84.2%三得芬(Tridemorph)乳劑稀釋1000倍加展著劑(力道威)3000倍之防除效果最佳,較其他處理區差異達5%顯著基準。茶樹實施施臺刈後噴藥區的枯枝數最少,其次為中剪枝後噴藥區。而25%克熱淨(Guazatine)溶液稀釋750倍對嫩芽、葉會引起藥害。僅實施中剪技或臺刈,而未做藥劑處理區於一年十個月之試驗期間,亦能獲得減少枯枝數的效果。若多數枝條接近地際部之枝幹被感染時,茶樹應實施臺刈;多數枝條自採摘面下20公分以內被感染時,茶樹實施中剪枝;若枯枝數量不多,剪除罹病枝皆可達防除本病效果,並符合經濟效益。 合經濟效益。 |
| 英文摘要 | Chinsin Oolong is the dominant variety in Taiwanese tea cultivation. However, this variety is susceptible to twig die-back disease caused by Macrophoma theicola. The efficacy of the application of fungicides with cultural practices (pruning) for the control of twig die-back disease on tea was assessed in Taiwan. The best control on the disease was obtained with heavy pruning treated with Tridemorph. Fungicide spraying on heavy-pruned tea bushes apparently reduced number of die-back twigs. The effect of medium pruning was inferior to that of heavy prunig. There wasspraying injury on tea shoots for Guazatine. In the testing period of 22 months, heavy or medium pruning without fungcide spray still could decrease amount of die-back twigs. It is suggested that pruning practice can be applied for controlling the disease. If the pathogens have attacked the portion near the base of tea trunks, heavy pruning down the disease symptom should be adopted. Medium pruning is needed if the diseased twigs appeared 20 cm below the plucking surface. If there are limited diseased twigs, hand removal of the twigs is the effective and economic ways in controlling the disease. ntrolling the disease. |
本系統中英文摘要資訊取自各篇刊載內容。