A comparison of post emergence control of Galium aparine in winter cerealsusing florasulam, amidosulfuron and fluroxypyr methyl-heptyl ester

Florasulam is a new acetolactate synthase inhibitor (ALS) with activity aga inst Galium aparine and a number of other key dicotyledonous weeds in cerea ls. Through analysis of efficacy trials data over a 3 year period from site s in the United Kingdom, France, Germany and Belgium, it was shown that flo rasulam gave equal or superior control of G. aparine compared to amidosulfu ron. When applied to larger plants later in the season the best treatment w as fluroxypyr. Analysis of dose response data and comparisons to commercially available tr eatments were carried out to define the correct dose rate for a commercial recommendation.