Pesticide>> Herbicides >> Metribuzin

Description: ISO 1750 (published)
IUPAC: 4-amino-6-tert-butyl-4,5-dihydro-3-methylthio-1,2,4-triazin-5-one or 4-amino-6-tert-butyl-3-methylthio-1,2,4-triazin-5(4H)-one
CAS: 21087-64-9
Formula: C8H14N4OS
Activity: herbicides (triazinone herbicides)

Structure:

Metribuzin APPLICATIONS
Biochemistry Photosynthetic electron transport inhibitor at the photosystem II receptor site. Selectivity is due to metabolism (mostly conjugation) within the plant (C. Fedtke, Proc. Br. Crop Prot. Conf. - Weeds, 1993, 1,221). Mode of action Selective systemic herbicide, absorbed predominantly by the roots, but also by the leaves, with translocation acropetally in the xylem. Uses Pre- and post-emergence control of many grasses and broad-leaved weeds in soya beans, potatoes, tomatoes, sugar cane, alfalfa, asparagus, maize and cereals, at 0.07-1.05 kg a.i./ha. Phytotoxicity Phytotoxic to many crops, including crucifers, cucurbits, lettuce, onions, sugar beet, sunflowers, flax, strawberries, sweet potatoes, and tobacco.

Metribuzin ANALYSIS
Product analysis by glc with FID (AOAC Methods, 1995, 984.11; CIPAC Handbook, 1988, 1D, 124) or by i.r. spectrometry (J. W. Betker et al., J. Assoc. Off. Anal. Chem., 1976, 59, 278). Residues determined by glc (C. A. Anderson, Anal. Methods Pestic. Plant Growth Regul., 1976, 8, 453). In drinking water, by gc with FID (AOAC Methods, 1995, 991.07). Details available from Bayer AG.

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