A triazine derivative or salt thereof represented by the following Formula 1: ** Formula ** [in the formula, R1 represents a hydrogen atom； a C1-C12 alkyl group； a C2-C6 alkenyl group； a C2-C6 alkynyl group； a C3-C6 cycloalkyl group； a C3-C6 cycloalkenyl group； a C3-C6 cycloalkyl group C1-C6 alkyl； a C1-C6 haloalkyl group； a C2-C6 haloalkenyl group； a C2-C6 haloalkynyl group； a C3-C6 halocycloalkyl group； a C3-C6 halocycloalkyl C1-C6 alkyl group； a C1-C6 alkyl amino group； a nitro C1-C6 alkyl group； a C1-C6 alkylamino group C1-C6 alkyl； a di (C1-C6 alkyl) amino C1-C6 alkyl group； a C1-C6 alkylthio C1-C6 alkyl group； a C1-C6 alkylsulfinyl group C1-C6 alkyl； a C1-C6 alkylsulfonyl group C1-C6 alkyl； a C1-C6 haloalkylthio group C1-C6 alkyl； a C1-C6 haloalkylsulfinyl C1-C6 alkyl group； a C1-C6 haloalkylsulfonyl group C1-C6 alkyl； a C1-C6 alkoxy group C1-C6 alkyl； a C1-C6 alkyl hydroxy group； a phenyl C1-C6 alkoxy C1-C6 alkyl group (the phenyl of the group may be substituted with a substituent group selected from the substituent Group α or between 2 and 5 substituent groups that are the same or different and selected from the substituent Group α)； a C1-C6 alkoxy group C1-C6 alkoxy C1-C6 alkyl； a C3-C6 cycloalkyloxy C1-C6 alkyl group； a C3-C6 cycloalkyl C1-C6 alkyloxy C1-C6 alkyl group； a phenyloxy C1-C6 alkyl group (the phenyl of the group may be substituted with between 1 and 5 identical or different substituents selected from substituent Group α)； a phenylthio C1-C6 alkyl group (the phenyl of the group may be substituted with between 1 and 5 identical or different substituents selected from the substituent Group α)； a C1-C6 alkyl phenylsulfinyl group (the phenyl of the group may be substituted with between 1 and 5 identical or different substituents selected from substituent Group α)； a C1-C6 alkyl phenylsulfonyl group (the phenyl of the group may be substituted with between 1 and 5 identical or different substituents selected from substituent Group α)； a C1-C6 haloalko
