Common buckwheat (Fagopyrum esculentum) tolerance to herbicides

Friesen, G.H. and C.G. Campbell

Agriculture Canada, Research Station, Morden, Manitoba R0G 1J0

Friesen, G.H. and C.G. Campbell. 1986. Common buckwheat (Fagopyrum esculentum) tolerance to herbicides. Weed Sci. 34: 435-439.

Abstract: Field experiments conducted over a 7-yr period have demonstrated that common buckwheat (Fagopyrum esculentum Moench. Cv. ‘Mancan’) has acceptable tolerance to many herbicides that are known to selectively control grass-type weeds in broadleaf crops. Herbicides for broad-leaf weed control that showed some selectivity in common buckwheat were desmedipham {ethyl [3- [[(phenylamino) carbonyl] oxy] phenyl] carbonate} applied postemergence and fluorochloridone {3-chloro-4- (chloromethyl) -1- [3- (trifluoro-methyl) phenyl] -2-pyrrolidinone} applied either preplant soil incorporated or preemergence shall incorporated. Tank mixtures of desmediphn plus sethoxydim {2- [1- (ethyoxyimino) butyl-5- [2- (ethylthio) propyl] -3-hydroxy-2-cyclohexene-1-one} also showed adequate tolerance to common buckwheat at rates recommended for weed control in other crops.

Key words: desmediphan, sethoxydim, fluro-chloridone, grass-specific herbicides, pre-plant-incorporated herbicides