Photosynthesis inhibitor used to control grass weeds in cereals. Prepn: C. W. Todd, US 2655445 (1952 to Du Pont); T. Mizuno et al., Synth. Commun. 9, 1675 (2000). Degradation in soil and identification of metabolites: D. Gross et al., Pestic. Biochem. Physiol. 10, 49 (1979). HPLC determn in technical products and formulations: W. Y. Yan et al., Pestic. Sci. 49, 400 (1997). Movement in sandy soil: C. Zander et al., J. Environ. Qual. 28, 1817 (1999). Field trial on grassy weeds in wheat: S. Singh, R. K. Malik Indian J. Agron. 39, 23 (1994).