礦 物 鹽 中， 僅 少 部 分 抑 制 率 高 於50%，
其 中 波 爾 多 液 之 抑 制 率 佳，1-1 式 為 50.5% ±
3.5%，抑制效果隨濃度提高而增加，4-4 式下為 100.0%。而亞磷酸中和液與石灰硫磺合劑，則 是各別在1,000 mg a.i. L-1與稀釋1,000× 時才有 抑制效果，達100.0% 與 57.3% ± 5.8%；植物精 油萃取液產品中，肉桂精油微乳劑1『黑修羅』
與微乳劑2『炭無蹤』對孢子發芽之抑制效果 佳，在產品稀釋10,000× 下抑制率各別為 58.7%
± 8.0% 與 66.3% ± 0.0%，在產品稀釋 5,000× 時 抑制率高達100% 與 83.3% ± 16.7%。
抑制菌絲生長方面
礦 物 鹽 中， 僅 波 爾 多 液 有 較 佳 的 抑 制 效 果，1-1 式抑制率即有 96.7% ± 1.3%，2-2 式
100
50
0 100 50 0
Inhibition rate (%)
-50
Eco-friendly agents
1-1 BDM 2-2 BDM 4-4 BDM
CaCl2, 10 mg ai L-1 CaCl2, 100 mg ai L-1 CaCl2, 1,000 mg ai L-1 NaHCO3, 10 mg ai L-1 NaHCO3, 100 mg ai L-1 NaHCO3, 1,000 mg ai L-1 NPA, 10 mg ai L-1 NPA, 100 mg ai L-1 NPA, 1,000 mg ai L-1
LSM, 1 : 10,000 dilution LSM, 1 : 5,000 dilution LSM, 1 : 1,000 dilution CNGP, 1 : 10,000 dilution CNGP, 1 : 5,000 dilution CNGP, 1 : 1,000 dilution
CitP-1, 1 : 10,000 dilution CitP-1, 1 : 5,000 dilution CitP-1, 1 : 1,000 dilution CitP-2, 1 : 10,000 dilution CitP-2, 1 : 5,000 dilution CitP-2, 1 : 1,000 dilution CinP-1, 1 : 10,000 dilution CinP-1, 1 : 5,000 dilution CinP-1, 1 : 1,000 dilution CinP-2, 1 : 10,000 dilution CinP-2, 1 : 5,000 dilution CinP-2, 1 : 1,000 dilution
(A)
(B)
圖2. 非化學合成藥劑對 Gilbertella persicaria 菌株 F210187 與 F212122 (A) 孢子發芽與 (B) 菌絲生長之平均 抑制率。BDM：波爾多液；NPA：亞磷酸中和液；LSM：石灰硫磺合劑；CNG (『活力能』，農業試驗所專 利配方)：2.5% 沒食子酸水溶液；Cit-1 (『銹躲』，農業試驗所專利配方)：20% 香茅精油微乳劑 1；Cit-2 (『黴 挫』，農業試驗所專利配方)：10% 香茅精油微乳劑 2；Cin-1 (『黑修羅』，農業試驗所專利配方)：36% 肉桂
精油微乳劑1；Cin-2 (『炭無蹤』，農業試驗所專利配方)：40% 肉桂精油微乳劑 2。
Fig. 2. Effect of non-chemical materials on inhibition of (A) spore germination and (B) hyphae growth of Gilber-tella persicaria isolates. The means shown here were the averaged values of the inhibition rates of the agents against F210187 and F212122 isolates. This experiment was conducted more than 2 times with 200 sporangial spores or 3 replicates of each isolate for each time [BDM: bordeaux mixture; NPA: neutralized phosphoric acid; LSM: line sulfur mixture; CNG (Active Power, TARI): 2.5% gallic acid, chinese nut-gall extract product; Cit-1 (Rust Escape, TARI):
20% citronella extract oil product 1; Cit-2 (Mold Stop, TARI): 10% citronella extract oil product 2; Cin-1 (Black Asura, TARI): 36% cinnamon extract oil microemulsifier 1; and Cin-2 (Anthracnose Escape, TARI): 40% cinnamon extract oil microemulsifier 2] (Bar = standard error).
213 統 (https://otserv2.tactri.gov.tw/ppm) 尚未針對 紅龍果濕腐病提供推薦用藥，僅表列紅龍果炭
Fig. 3. Effect of cyprodinil-fludioxonil mixture and cinnamon essential oil product (Black Asura) on disease incidence of pitaya flower wet rot caused by Gilbertella persicaria in the field. This experiment was conducted 3 times and placed in a random complete block design (RCBD) in the summer of 2017. Columns with the same letters are not significantly different based on the least significant different (LSD) test (P < 0.05) [CK: nega-tive control, sprayed with water instead of chemicals or agents; cyprodinil-fludioxonil mixture (62.5%, water dispersible granules), 1 : 2,000 dilution; Cin-1 (Black Asura, TARI): 36% cinnamon essential oil microemul-sifier 1, 1 : 1,000 dilution] (Bar = standard error).
藥 劑， 便 可 延 伸 使 用 在 紅 龍 果 濕 腐 病 的 防 治
Disease incidence (%) Treatment
圖4. 施用扶吉胺對紅龍果花期濕腐病罹病率之影
響。
Fig. 4. Effect of the fluazinam, with highly inhibitory ability against Gilbertella persicaria spore germination, on disease incidence of pitaya flower wet rot caused by G. persicaria in the field. This experiment was test-ed in a random complete block design with 4 blocks (replicates) in the summer of 2018. Columns with the same letters are not significantly different based on the least significant difference (LSD) test (P < 0.05) [Cy-prodinil-fludioxonil mixture (62.5% water dispersible granules) as positive control, 1 : 2,000 dilution; CK:
negative control, sprayed with water; fluazinam (39.5%, suspension concentrates), 1 : 2,000 dilution] (Bar = standard error).
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