|Title:||從生態學觀點研定柑橘立枯病現行之有效預防策略||Other Titles:||A Proposed Strategy for Control of Citrus Likubin from Ecological Viewpoint in Taiwan||Authors:||黃秋雄
|Keywords:||柑橘立枯病(黃龍病）;媒介昆蟲;柑橘木蝨;族群消長;預防策略;Citrus likubin;Vector;Citrus psyllid;Population fluctuation;Control strategy||Issue Date:||Jun-1995||Publisher:||農業試驗所||Start page/Pages:||177-185||Source:||農業試驗所特刊;第51號||Conference:||台灣柑橘之研究與發展研討會專刊
Research and Development of Citrus in Taiwan
Citrus likubin is the most important disease in citrus cultivation in Taiwan. At present, it is still not found an effective chemicals to control the disease. From our recent research on the incidence and spread of the disease in relation to the population fluctuation of its vector psyllid, Diaphorina citri. The results clearly indicated that the number of adult psyllids increased from mid-March (mid-Spring), then reached the highest density in late April and early May(early Summer). The high population density lasted about 2 to 3 months (Fig. 1,2) but depends on environmental factors. Generally, psyllids increase in orchard after the new flushes coming out from citrus trees if adult psyllids were survived over winter season in next Spring. To understand the time of likubin transmitted by vector, the results indicated that higher transmission rates occurred in March, April and May from our field experiments. Based on above results, it is clearly that the timing of likubin infection may also be the timing of new sprouts flushing in fields, especially from March to May in one year. However, it is also important that different citrus species planted in different areas, the timing of new sprouts flushing may be somewhat different. Another experiments indicated that intensive insecticide sprayings were effectively prevented the spread of the disease. Therefore, we suggest that intensive spray of insecticides from March, i.e. new sprouts flushing, to May and early eradication of likubin-infected trees be carried out to reduce the spread of likubin in citrus cultivated industry.
|Appears in Collections:||植物病理組|
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