幾種種子消毒劑對稻熱病及稻苗徒長病病原菌之消毒試驗
Other Title
Testing on Fungicides for Rice Seed Treatment for Controlling Piricularia Oryzae Cav. and Gibberella Fujikuroi (Saw.) Wr.
Journal
農業研究
Journal Volume
12
Journal Issue
2
Start Page
22
End Page
33
Date Issued
1963-06-04
Date
1963-06-04
Author(s)
朱啟魯
簡錦忠
鍾順昌
C.L. Chu
C.C. Chien
S.C. Jong
Abstract
本試驗目的在探求經濟而有效之種子消毒藥劑，供試之病原菌有兩鍾，即稻熱病菌及稻苗徒長病菌，本試驗所得結果如下：
1. 種子消毒劑對稻熱病病原菌之消毒所採用之濃度，分別為1.8 tab./L，1,000倍，1.3 tab./L，1.5 tab./L，2.0 tab./L，1.0 tab./L時（依照各種殺菌劑說明書之使用濃度），其抑制病菌之次序為 Riogen，Granosan，Ruberon，Uspulun，Takeda Mer，Nichinou Mer。
a. Riogen之濃度為1.8 tab./L (40.8 mgHg/L）時，浸種十分鐘即可完全抑制稻熱病菌絲之發育。
b. Granos之濃度為1,000倍（5 mgHg/L）時，浸種三十分鐘即可完全抑制稻熱病菌絲之發育。
c. Nichinou Mer之濃度為1 tab./L (19.5 mgHg/L）時，浸種一小時有58.97%之抑制效果，浸種十分鐘時則毫無效果。
2. 種子消毒劑對稻苗徒長病病原菌所採用之濃度，分別為1.3 tab./L，1.8 tab./L，1,000倍，1 tab./L，2 tab./L，1.5 tab./L時（依照各種殺菌劑說明書之使用濃度），其抑制病原菌之次序為 Ruberon，Riogen，Granosan，Nichiuou Mer，Takeda Mer，Uspulun。
a. Ruberon 之濃度為1.3 tab./L(22.5 mgHg/L）時，浸種十分鐘可完全抑制稻苗徒長病菌絲之發育。
b. Riogen 之濃度為1.8 tab./L(40.8 mgHg/L）時，浸種三十分鐘可完全抑制稻苗徒長病菌絲之發育。
3. 藥劑對稻熱病菌消毒60分鐘時，Granosan 最有效，藥效最差者為 Uspulun。Takeda Mer之ED50約為10 ppm，Nichinou Mer之ED50約為18 ppm。
4. 藥劑對稻苗徒長病處理30分鐘時，Granosan藥效最佳，藥效最差者為Uspulum，Riogen之ED50約為15ppm，Nichinou Mer之ED50約為24ppm。
5. 藥劑對稻苗徒長病菌處理60分鐘時，Granosan最有效，Uspulun藥效最差，Riogen之ED50約為10 ppm，Nichinou Mer之ED50。約為18 ppm，Uspulun之ED50約為38ppm。
6. 此項結果，均係在實驗室內試驗者，其實用價值仍須舉行田間試驗證明之。
Blast (Piricularia oryzae Cav.) and Bakanae disease (Gibberella fujikuroi (Saw.) Wr.) are two important seed borne diseases on paddy rice. Since the past decade, treatment of rice seeds with mercuric compounds has been adopted by the farmers to control the diseases. Granosan is used more popularly in this island. In order to find some fungicides more economic and effective than Granosan, several mercuric compounds with their trade names as Takeda Mer, Ruberon, Riogen, Nichinou Mer etc., were tested in the laboratory.
Results obtained are summarized as follows:
1. Comparative testing of the fungicides was carried out in accordance with Horsfall’s method, measurement of ED50 was made and DR curves were presented in this report.
2. Under the concentrations recommended by the manufactories, effectiveness of the testing fungicides - against P. oryzae is arranged in a descending order, namely; Riogen tablet (1.8 tab./L), Granosan wp (1: 1,000) Ruberon tablet (1.3 tab./L), Uspulun (1.5 tab./L) Takeda Mer tablet (2 tab./L), Nichinou Mer tablet (1 tab./L).
3. With the same concentration as mentioned above, the effectiveness of the fungicide against G. fujikuroi is arranged in a descending order namely: Ruberon tablet (1.3 tab./L), Riogen tablet (1.8 tab./L), Granosan wp (1: 1,000), Nichinou Mer tablet (1 tab./L), Takeda Met tablet (2 tab./L), Uspulun tablet (1.5 tab./L).
4. Under the concentrations of 5, 10, 20, 40 ppm respectively, the compounds tested to P. oryzae and G. fujikuroi, Granosan wp. is the most effective chemical, while Uspulun tablet was less effect.
The results to be adopted for practice should be checked by field testing.
Publisher
農業試驗所
Type
journal article
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