Effect of ensiling on the decomposition of several herbicides
Linscott, D.L.; Hagin, R.D.; Wright, M.J.
Crop Sci 5(5): 455-456
Chlorinated phenoxy herbicides were applied to legume and grass forages and ensiled for varying time periods up to 3 months. From 40 to 65% of 2,4-DB from alfalfa (Medicago sativa L.) and birdsfoot trefoil (Lotus corniculatus L.) was lost in silage fermented for 30 days or longer. Degradation was most rapid during the initial phases of fermentation. The 2,4-DB and 2,4-D were degraded in bromegrass (Bromus inermis L.) orchardgrass (Dactylis glomerata L.) and timothy (Phleum pratense L.) as much as 20 to 50% depending on herbicide and species. Silvex was degraded in bromegrass silage up to 47%.