Leafy Spurge Control and Improved Forage Production with Herbicides

R. G. Lym, C. G. Messersmith
1985 Journal of range management  
An experiment to evaluate 59 long-term leafy spurge (Euphorbia es& L.) management alternatives with resulting forage production was established at 4 sites in North Dakota in 1980. The herbicides applied included 24-D [(2,4_dicblorophenoxy)acetic acid], dicamha (3,6-dichloro-2-metboxybenzoic acid), and picloram (4amino-3,5,6-trichloro-2-pyridinecarboxylic acid). Picloram was applied as the liquid spray, granules or using a roller or pipe-wick reduced volume applicator. All original
more » ... ginal treatmentsapplied in 1980 reduced leafy spurge density 65% or more but required retreatments in 1981 and 1982 to maintain good control. Picloram sprayed at 2.2 kg/ha followed by a herbicide retreatment provided the best leafy spurge control at 84% after 3 years, but resulted in only intermediate annual forage production. Picloram roller applied provided 84% initial leafy spurge control and increased forage production an average of 28%, but control declined rapidly without retreatment. Picloram pipe-wick applied gave poor leafy spurge control and no
doi:10.2307/3899704 fatcat:n73k5e4g7nbbtmqbgv2gezoshu