Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

On new herbicides for a return.

Abstract

The results are summarized of field trials conducted in France in 1997 to assess the efficacy of 2 new herbicides for broadleaved weeds (Carat containing flurtamone + diflufenican and Cedra containing prosulfocarb + ioxynil) and one graminicide (Vip containing clodinafop-propargyl + cloquintocet-mexyl). Carat and Cedra applied at very early crop growth stages gave good control of a wide spectrum of broadleaved and some grassy weeds; Carat was particularly effective against Veronica, Viola and Stellaria spp. Vip applied alone did not give better control than reference herbicides, but its efficacy was significantly improved in combination with mineral or esterified vegetable oil, and was optimal in combination with Maestro II [ioxynil + mecoprop]. Under these conditions, good control of Avena fatua, Alopecurus sp., Arrhenatherum elatius var. bulbosus and Poa trivialis was achieved. The prospects for other substances in the process of registration are discussed, including flupyrsulfuron-methyl and carfentrazone.