只有地散磷是目前尚未正式鉴定的有机磷酸盐除莠剂.Bensulide is the only presently registered herbicidal organophosphate.氨基甲酸苯酯除莠剂是发展最早的一种除莠剂.Phenylcarbamate herbicides were among the earliest herbicides developed....

“除莠剂”的英语可以翻译为：[化] weedicide，[医] herbicide ...