KORVETA™ - a new herbicide for the control of a wide range of broadleaf weeds in winter oilseed rape applied in spring

Abstract

KORVETA™ herbicide is a novel selective post-emergence herbicide for use on winter oilseed rape applied as a spring application. KORVETA provides superior control of a wide range of important annual broad-leaved weeds in winter oilseed rape, including Centaurea cyanus, Galium aparine, Matricaria spp. and Papaver rhoeas, combined with a robust crop safety. KORVETA combines both actives Arylex and clopyralid and therefore contains two non-ALS mode of actions. While clopyralid has been widely used in oilseed rape in recent years, Arylex is a new auxinic herbicide for the post-emergence weed control of key broad-leaved weeds. Arylex is the first member of the ‘Arylpicolinate’ structural class, a new class within the HRAC Group O. The ISO common name of Arylex is ‘halauxifen-methyl’ (Dow AgroSciences, 2013). With a maximum use rate of 1 L /ha, KORVETA will deliver 4.8 g ae/ha of Arylex and 120 g ae/ha of clopyralid. KORVETA is formulated as an emulsifiable concentrate (EC). KORVETA will be applied as a single application from crop stage BBCH 30 up to BBCH 50 and will give growers a new tool to control the key broad-leaved weeds occurring in oilseed crop in the spring.