Studies on the Synthesis and Fungicidal Activity of Cadmium Pentachlorophenolxanthate

Cadmium pentachlorophenolxanthate의 합성 및 살균작용에 관한 연구

  • Do Un Hoi (College of Agriculture, Seoul National Univ.,) ;
  • Lee Sung Hwan (College of Agriculture, Seoul National Univ.,) ;
  • Kang In Mok (Inst. Of Plant Environment, Office Rural Development)
  • 도운회 (서울대학교 농과대학) ;
  • 이성환 (서울대학교 농과대학) ;
  • 강인목 (농촌진흥청 식물환경연구소)
  • Published : 1970.05.01

Abstract

Cadmium pentachlorophenolxanthate has been synthesized with pentachlorophenol, carbondisulfide sodium hydroxide and cadmium chloride and its fungicidal activity was tested to Pyricularia oryzae and Cochliobolus miyabeanus. The results are summarized as followes; 1) The sample V synthesized by acidifying the crude PCP-xanthate solution at pH 8, then treated with $BaCl_2\;and\;CaC_2$ showed the highest purity, and the yield was $85.1\%$. 2) The same sample of $50\%$ wettable dust formulation inhibited conidial germination of P. oryzae and C. miyabeanus completely at 10 and 20 ppm, respectively. (Fig. 1) 3) The sample of $1.5\%$ dust formulation inhibited mycelial growth of P. oryzae and C. miyabeanus with 96 and $65\%$, respectively. The results were similar to those obtained by Ceresan calcium (Fig. 2) 4) Both dust and wettable powder formulations had no phytotoxcity on rice seedlings.

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