萬帥(Onecide)為防除旱田一年生及多年生禾本科雜草專用之萌後（莖葉處理）殺草劑。對禾本科植物有強力之作用，具有高度之選擇性，對他科植物幾不發生作用。本劑易由莖葉或根部吸收，在短時內即移行植物全身，使生長點及葉鞘基部生長帶之細胞分裂停止，接著週圍細胞全部明顯的壞死。可顯現節位部柔細胞異常的壞死，導致節部折斷。因其滲透移行性強盛，可充分抑制防除多年生雜草的地下莖或匍匐莖再生。本劑可使雜草伸長停止，其後新葉部開始白化、萎凋，藥效逐漸移行下部，葉鞘及老葉因蓄積紫色素而變成赤紫色，節部壞死，藥效遲緩。本劑之人畜毒性及魚毒性很低，安全性極高。

Onecide is a postemergence, highly selective herbicide to control annual and perennial gramineous grasses in upland without any injury on species of other family. Onecide is absorbed by root. stem and leaf then transported systemically in short period to prohibit cell division of growing point and leaf primordia. Thus cell death occurs and expanding to the surrounding clls. Necrosis of parenchymatous tissues of nodes results in breakdown of the nodal tissues. With its strong systemic action. Onecide prohibits regrowth of runners and rhizomes of the perennical gramineous grasses. Onecide induces young leaves to become albino and wilt. When onecide is transported downward anthocyanin accumulates in leaf sheath and leaves which turned to red-violet and finally causes a necrosis of node. Onecide is very safe to human being. poultry and fish.