| 摘要 |
PURPOSE:To effectively control slugs and siebolds globular snail by using an insecticide of immediate effects against slugs consisting essentially of ammonia and to efficiently protect agricultural products such as vegetables from eating damage by these insect pests without phytotoxicity. CONSTITUTION:Ammonia is used as a main component of an insecticide of immediate effects against slugs, preferably urea is applied to leaves of crops, fruits or soil or applied as a fertilizer and urease, an enzyme obtained from a leguminous plant or a culture solution of a bacterium of the genus Bacillus is sprinkled upon to cause enzymatic reaction and to evolve an ammonia gas. By this method, not only the above-mentioned insect pests directly eating leaves of crops and fruits and damaging the crops, etc., but also insect pests living in soil are destroyed within several minutes, there is hardly a smell of ammonia, preventing effects are maintained for 1-several days and finally the compound is absorbed as a nitrogen fertilizer component. |
