Karmex, Diurex: diuron

Trade Names	Karmex, Diurex 80WDG
Formulation	DF, WP
Guaranteed active concentration	80%
Groups	7
Ontario Schedule	2
Winter Storage	C
Chemical Family	Substituted urea.
Crop and/or Non-Crop Registrations	Grapes, asparagus, gladioli, industrial sites, right-of-ways.
Sensitive Weeds	Annual and perennial grasses, pigweed, ragweed, wild carrot and dandelion. Perennial weed control at higher rates in non-crop areas.
Uptake and Translocation	Most readily absorbed by roots, less so by foliage. Translocated upward in the xylem.
Basis of Selectivity	Used only in deep-rooted crops that are well established.
Application Methods	Applied to crops as a preemergence or directed early postemergence spray, preferably before weed growth becomes dense. Better control of emerged weeds is obtained by the addition of a suitable surfactant. In non-crop areas, diuron may be sprayed anytime except when ground is frozen.
Residual Activity	At lower rates used in crops, residues last about a year and thus applications may be repeated annually. At higher non-crop rates, persistence may be more than 1 year.
Unique Characteristics	Do not use where it is likely to leach or wash into contact with the roots of desirable trees or shrubs.
Manufacturer / Registrant	Dupont Canada Inc . United Agri Products