Control of Umbelliferae in Grassland and Pasture, a new herbicide containing ArylexTM active

Abstract

Anthriscus sylvestris is a perennial or biennial herbaceous plant in permanent grassland and pasture. With its half rosette it is able to displace valuable forage grasses and has only a medium feed value. At present, no effective and long-lasting solutions with selective acting herbicides is available against it and other hard-to-control weeds of the Umbelliferae family. ArylexTM active (halauxifen-methyl) is a new active ingredient in the subgroup of aryl picolinates belonging to synthetic auxins. Herbicides containing this active ingredient have been marketed in Germany since 2018 for weed control in cereals. For the use in grassland and pasture GF-3635 is now under development by Corteva Agriscience in Germany and other European countries. It is a premix of Arylex, fluroxypyr and triclopyr and contains at the 1.5 L/ha maximum use rate 10 g/ha Arylex, 300 g/ha Fluroxypyr and 300 g/ha triclopyr. GF-3635 is thus a further development of the Product Starane Ranger® available since 2005, Ranger® since 2012 respectively, with equal amounts of fluroxypyr and triclopyr per hectare. It can be safely applied during the whole vegetation period, does not harm valuable grass species and has no negative impact on yield quantity and Forage quality. GF-3635 controls A. sylvestris, Heracleum sphondylium, Plantago lanceolata, Ranunculus acris, Ranunculus repens, Rumex crispus, Rumex obtusifolius, Taraxacum officinale and Urtica dioica.