草霸王對水田中多年生問題雜草及莎草科雜草具極優異的殺草效果，並可用於玉米、花生、豌豆、矮性菜豆、大豆、高梁及洋蔥等作物田的雜草防除。草霸王是一種萌後使用的接觸型除草劑，其有效成分係本達隆，本達隆能被植物的葉及根部吸收。在有抗性的植物體中，這些被吸收的本達隆能被代謝並轉變為某些植物成分的連接物，然而在敏感性的植物體中，被吸收的本達隆有85-95﹪沒有任何改變。本達隆在這兩種植物體中均能抑制光合作用，可是在有抗性的植物如水稻差不多5天後，所有的光合作用都恢復正常，但敏感性的植物則無法恢復。有抗性與敏感性兩者對本達隆的代謝與解毒能力顯示了該藥的選擇性。草霸王於1975年在台灣開始登記試驗於問題雜草的防除，於1976年底開始正式推廣在水稻移植本田中期雜草防除。1977年則增列推廣於直播田及秧田雜草防除，並於1980年完成了控制粒子施藥法（CDA法）的登記。

Basagran is efficient to control perennial problem weeds and Cyperaceae in rice, and also be used in maize, peanuts, peas, dwarf beans, soybeans, sugarcane, sorghum and onions. Basagran is applied post-emergence to weeds with contact action. The active ingredient of Basagran is bentazon. Bentazon can be absorbed by the leaves and roots of the plants. In resistant plants, the absorbed bentazon is metabolized and converted to a conjugate of some natural plant component. while in suscepti ble ones 85-95 per cent of the absorbed bentazon is unchanged. Bentazon can inhibit photosynthesis in both species. However, almost complete recovery of photosynthesis is observed in rice at 5 days but no recovery occurred in susceptible plants. The difference between resistant and susceptible species in their ability to metabolize and detoxify bentazon appears to be the mechanism of bentazon selectivity. Basagran was proceeded for registration in 1975 as a special product for problem weed control. In late 1976. Basagran obtained registration on transplanted rice field, and approved for direct seeded rice field, rice seedling field in 1977. Basagran was also registrated by controlled-droplet application(CDA) method in 1980 in Taiwan .