BAS 620 H - A new selective herbicide for post-emergence control of grass weeds in broadleaf crops

BAS 620 H is a new cyclohexenone herbicide of Nisso BASF Agro Ltd containing the new active ingredient tepraloxydim (proposed ISO common name). BAS 620 H is developed by BASF for broad spectrum post-emergence grass weed control in broadleaf crops in Europe and the Americas. At a use rate of 50 - 75 g a.i./ha, BAS 620 H controls all economically important annual grasses as well as volunteer small grains. BAS 620 H, at 75 - 100 g a.i./ha, is particularly strong on Poa annua and volunteer corn. At 100 g a.i./ha, BAS 620 H controls perennial grasses such as Sorghum halepense and Elymus repens and supresses Cynodon dactylon and Brachiaria ia decumbens. The standard formulation of BAS 620 H is a 200 g/litre EC formulation for use with an additive in soybeans, cotton, canola, peas, beans, mustard and flax. In Europe, an adjuvant built-in formulation is under development for use in winter oilseed rape, sugar beet, potatoes, cole and pulse crops. BAS 620 H can be applied alone or in a mixture with other herbicides to complement the weed spectrum on broadleaf weeds, Environmental fate and toxicology studies indicate a favorable environmental profile. First registrations of BAS 620 H are expected in 1999/2000.