| 摘要 |
Fungi, bacteria and viruses are controlled, especially on plants, by application of chemicals of the formula: <IMAGE> such as 2,3-dihydro-5-phenyl-1,4-dithiin 1,1,4,4-tetroxide, 2-ethyl-5,6-dihydro-3-methyl-1,4-dithiin 1,1,4,4-tetroxide and 2,3-dihydro-5-methyl-2-phenyl-1,4-dithiin 1,1,4,4-tetroxide.
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