紅龍果花期與幼果濕腐病 (病原Gilbertella persicaria) 之 藥劑篩選與田間防治
Other Title
Chemical Screening and Field Trials for Controlling Pitaya Flower Wet Rot Caused by Gilbertella persicaria
Journal
台灣農業研究
Journal Volume
69
Journal Issue
3
Pages
207-217
Date Issued
2020-09
Author(s)
Abstract
紅龍果濕腐病由Gilbertella persicaria 引起，可造成紅龍果 (Hylocereus spp.) 花苞與幼果腐敗，以及成熟果實在貯藏期腐爛，在台灣造成紅龍果產量巨大的損失，因此本研究目標為篩選此病害的防治藥劑。在培養基內測試27 種化學合成藥劑與10 種非化學合成藥劑對G. persicaria 孢子發芽與菌絲生長的影響，結果顯示化學合成藥劑之中，賽普護汰寧對孢子發芽與菌絲生長、扶吉胺對孢子發芽之抑制效果最佳，1 mg a.i. L-1 即有顯著效果；非化學合成藥劑中，以波爾多液 (石灰-硫酸銅合劑) 與『黑修羅』 (肉桂精油製劑) 在抑制孢子發芽與菌絲生長效果最佳，各別在1-1 式與稀釋10,000 倍時即有良好抑制效果。Pitaya Gilbertella rot, also called pitaya wet rot, is caused by Gilbertella persicaria. The pathogen not only damages the flowers and early fruit of pitaya (Hylocereus spp.) but also causes rot on mature fruit during storage. Because the disease has led to a huge amount of yield loss of pitaya in Taiwan, the objective of this study was to screen chemicals or eco-friendly agents for controlling this disease. A total of 27 synthetic chemicals and 10 eco-friendly agents were tested in vitro for the inhibition effect of mycelial growth and spore germination of G. persicaria. The results showed that among the tested synthetic chemicals, cyprodinil-fludioxonil mixture was the most effective chemical in inhibiting both spore germination and mycelial growth of the pathogen, and fluaziname was the best in inhibiting spore germination. As for eco-friendly agents, Black Asura (microemulsifier of cinnamon essential oil) and bordeaux mixture (mixture of lime and copper sulfate) were the most effective materials.
Subjects
紅龍果花期濕腐病
藥劑防治
田間試驗
Pitaya flower wet rot
Chemical control
Field trial
Publisher
農業試驗所
Type
journal article
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