摘要 |
PURPOSE:To provide the titled agent containing a mixture of pyridafenthion and o-sec-butylphenyl methylcarbamate as an active component, directly or indirectly acting to jumbo mud-snail and inhibiting the physiological action of the snail to death. CONSTITUTION:Pyridafenthion of formula I (O-2,3-dihydro-3-oxo-2-phenyl-6- pyridazinyl-O,O-diethyl thiophosphate) and o-sec-butylphenyl methylcarbamate of formula II are mixed with each other at a ratio of 1:4-4:1 to produce the titled extermination agent. The mixture is sued as it is or after diluting with water, solid powder or other material or, if necessary, together with an assistant such as surfactant or used in the form of wettable powder, wettable granule, sol, emulsion, powder, oil-solution, etc. Jumbo mud-snails damaging various water crops such as lotus root, rush, MIZUIMO (a kind of taro) can be exterminated by the use of the above agent.
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