Ametryn | 農藥合法資訊網

Ametrynwasintroducedin1962andisstillanestablishedpreemergenceandearlypostemergenceherbicidesoldunderthetradenameGesapax®andEvik®.

In 1955 monuron was registered as the first preemergence herbicide in citrus (Day, 1955), followed by diuron and simazine. Simazine was recommended by the University of Florida as an excellent weed control tool for citrus beginning in 1962 (Kretchman and McCown, 1962).

Simazine controls an extensive range of grasses and broadleaf weeds when applied to the soil. The minimal leaching of simazine and the resulting protection to plant roots that this affords, adds to its selectivity in deep-rooted crops such as citrus. Simazines persistence in the soil makes it valuable for long-term weed control (Brian, 1976). Simazine is widely used in the United States, treating approximately 50%, 62%, and 18%, respectively of the total area grown for orange, grapefruit, and lemon (Doane AgroTrak, 2005).