RED TIDE-CAUSING ALGA EXTERMINATING AGENT AND RED TIDE PROTECTIVE METHOD USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide a red tide-causing alga exterminating agent having high algicidal activity against dinoflagellates which are known as causative algae causing red tide, having low ichthyotoxicity, and practicable.;SOLUTION: This red tide-causing alga exterminating agent contains a 1,4-naphthoquinone derivative expressed by formula (1) (R₁, R₂, R₃, R₄ and R₅ are identical to or different from one another, and each H, a halogen or a lower alkyl; R₆ is O, N or S; and R₇ is a H, an acyl, a lower alkoxycarbonyl, a lower alkylcarbamoyl or a lower aklyl) or its salt as an active ingredient.;COPYRIGHT: (C)2006,JPO&NCIPI