Absorption,Translocation and Metabolism of Chlomethoxynil (X-52) in Plants

Rapid absorption and degradation of chlomethoxynil were observed in seedlings of rice and barnyard millet. The amounts of absorption by rice and barnyard millet, at the 2-leaf and 4-leaf stages of plants, were determined in water and soil cultures.

The major metabolic products of chlomethoxynil were 2,4-dichlorophenyl 3′-hydroxy-4′-nitrophenyl ether, 2,4-dichlorophenyl 3′-methoxy-4′-aminophenyl ether and their conjugates, and 2,4-dichlorophenyl 3′-methoxy-4′-acetylaminophenyl ether. Several minor unknown substances were also detected. A major metabolic pathway of chlomethoxynil in plants was postulated.