| abstract |
A cyclic nitrogenous compound represented by general formula (1) and a herbicide containing the same, exhibiting a high herbicidal activity in a small dose, and having crop selectivity: wherein R1 represents alkyl; R represents hydgrogen or alkyl; X represents oxygen, sulfur or NR3; Q1 represents hydrogen, alkyl, cycloalkyl, alkenyl, alkynyl, phenyl, naphthyl, heterocycle, etc.; Q2 represents alkyl, cycloalkyl, alkynyl, phenyl, thienyl, etc.; A1 represents carbon or nitrogen; A2 represents CR2, NR2, oxygen, sulfur, SO or SO¿2?; and A?3¿ represents a single bond, oxygen, sulfur, CR?5 or NR5¿. |