柑橘瘡痂病藥劑防治試驗

李永松; 劉康鑑; Y.S. Lee; K.C. Liu

doi:10.29951/JARC.196803.0007

柑橘瘡痂病藥劑防治試驗

Other Title

Laboratory And Field Evaluations Of Fungicides For Control Of Citrus Scab

Journal

農業研究

Journal Volume

17

Journal Issue

1

Start Page

30

End Page

34

Date Issued

1968-03-07

Date

1968-03-07

Author(s)

李永松

劉康鑑

Y.S. Lee

K.C. Liu

DOI

10.29951/JARC.196803.0007

URI

https://scholars.tari.gov.tw/handle/123456789/13916

Abstract

六供試藥劑中，阻止柑桔瘡痂病病原菌產生胞子之效果，以大富丹（Difolatan）為最優，其次為穀仁生（Gurasun）及大生M-45（Dithane M-45）。富爾培（Phaltan）再次之，大生Z-78（Dithane Z-78）及雷彈又更次之。在田間撒佈試驗中，以大富丹1.25 kg./100 l.、雷彈2.5 kg./100 l.及大生Z-78 2.5kg./100 1.之效果為最佳。大富丹2.5kg./100 1.、大生M-45 2.5kg./100 1.及雷彈1.25 kg./100 1.次之。大生Z-78 1.25kg./100 1.、大生M-45 1.25kg./100 1.及富爾培2.5kg./100 1.和1.25kg./100 l.又次之。穀仁生之效果不穩定。供試藥劑中，大富丹於室內及田間試驗皆為最優良之藥劑。穀仁生在室內試驗阻止胞子之效果甚為良好，但在田間試驗則甚不穩定。雷彈於室內試驗之結果不理想，但在田間試驗則顯示良好之防病效果。 In testing inhibitory effects of fungicides on sporulation of the scab causal fungus, six fungicides at the different dosage rates were incorporated into agar plates on which sections of diseased tissue were inoculated. Difolatan W-80 gave the best inhibitory effect. It inhibited nearly 90% sporulation of the fungus at the concentration as low as 3.125 ppm. Gurasun and Dithane M-45 showed the same inhibitory effect at the concent-ration of 12.5 ppm. The minimum concentrations for Phaltan and Delan to show the same inhibitory effect were 50 ppm and 200 ppm respectively. Dithane Z-78 at the conce-ntration of 50 ppm inhibited 69.4% sporulation of the fungus, it gave 100% inhibition at the concentration of 200 ppm. Six fungicides were evaluated for their effectiveness in controlling citrus scab at three orchards in the different areas. Difolatan at the rate of 1.25 kg. /100 l., Delan at 2.5 kg./100 1., and Dithane Z-78 at 2.5 kg. / 100 1. gave the best control for citrus scab. Difolatan at the rate of 2.5 kg./100 1., Dithane M-45 at 2.5 kg./100 1., and Delan at 1.25 kg. /100 1. were less effective than foregoing treatments. Only fair control was obtained with Dithane Z-78 at the rate of 1.25 kg. /100 1., with Dithane M-45 at 1.25 kg. /100 1., and with Phaltan at 1.25 kg. /100 1. and at 2.5 kg.J 100 1. Difolatan W-80 at the rate of 1.25 kg./100 1. or Delan at 2.5 kg./100 1. applied at times of new flushes, petal falling, and three weeks after second application is being recommend-ded for citrus scab control.

Publisher

農業試驗所

Type

journal article

File(s)

Name

journal_arc_17-1-7.pdf

Size

505.25 KB

Format

Adobe PDF

Checksum

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