Varietal reactions of Strawberry to two isolates of Mycosphaerella fragariae and its chemical control

딸기 반엽병균의 계통에 대한 품종간 저항성과 살균제의 방제효과

  • Kim C. G. (College of Agriculture, Dong-A University) ;
  • Cho C. T. (College of Agriculture, Dong-A University) ;
  • Bai T. U. (College of Agriculture, Dong-A University) ;
  • Han H. S. (College of Agriculture, Dong-A University) ;
  • Ha S. Y. (College of Agriculture, Dong-A University) ;
  • Moon B. J. (College of Agriculture, Dong-A University)
  • Published : 1978.09.01

Abstract

Varietal resistance of 49 strawberry varieties to two isolates of Mycosphaerella fragariae was investigated by incoulation experiments and its chemical control was also studied. 1. The susceptibility of varieties and pathogenecity of the isolates were significantly different. 2. in most instances isolate $S_3$ and the reactions of varieties to the isolates were different. 3. Among the varieties tested, Tioga, Donner, Marhall, Northwest, Red star, Senga, sengana, Shasta, Torrey, Hokowase and Daehak No. 1 were found highly susceptible to isolate $K_2$, and America, Dabreak, Takanae, Kurumae No. 103, Horida's wander, Benizuru, Hukuba and Himiko were found as highly resistant. 4. It was apparent that America, Morioka No. 17, Takanae, Kurumae No. 13, Horida's wander, Benizuru and Hukuba were resistant to isolate $S_3$ and Marshall, Tioga were very susceptible to it. 5. As for the susceptibility of varieties by old End new leaf to isolate $K_2$, old leaves were evaluated as highly resistant. 6. Under the conditions of artificial infection Captan was the most effective in controlling for the leafspot and followed by Zineb and Difolatan.

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