Metribuzin and trifluralin residues in faba bean following preplant incorporated application

Abstract

Cessna, A. J. 2002. Metribuzin and trifluralin residues in faba bean following preplant incorporated application. Can. J. Plant Sci. 82: 257-259. In a study involving three sites in western Canada, residues of the herbicides metribuzin and trifluralin in faba bean (Vicia faba L.) were monitored by gas chromatography with electron-capture detection following pre-plant incorporation of tank mixtures of metribuzin plus trifluralin at (0.28 + 1.12) and (0.42 + 1.12) kg ha -1 . In green foliage samples collected 40 to 48 and 90 d after seeding, mean residues (n = 4) of either herbicide did not exceed 0.10 mg kg -1 . No metribuzin or trifluralin residues were detected in the mature seed.