Sediment Facilitates Microbial Degradation of the Herbicides Endothall Monoamine Salt and Endothall Dipotassium Salt in an Aquatic Environment
Md Shahidul Islam, Trevor D Hunt, Zhiqian Liu, Kym L Butler, Tony M Dugdale
International Journal of Environmental Research and Public Health | MDPI | Published : 2018
Endothall dipotassium salt and monoamine salt are herbicide formulations used for controlling submerged aquatic macrophytes and algae in aquatic ecosystems. Microbial activity is the primary degradation pathway for endothall. To better understand what influences endothall degradation, we conducted a mesocosm experiment to (1) evaluate the effects of different water and sediment sources on degradation, and (2) determine if degradation was faster in the presence of a microbial community previously exposed to endothall. Endothall residues were determined with LC-MS at intervals to 21 days after endothall application. Two endothall isomers were detected. Isomer-1 was abundant in both endothall f..View full abstract
This research was funded by Department of Agriculture Water Resources, Agriculture Victoria, Goulburn-Murray Water, Coleambally Irrigation, Ord Irrigation, Murrumbidgee Irrigation, Sun Water and UPL Australia Ltd.