Monolinuron is a pesticide,[1] more specifically a selective systemic herbicide[2] and an algaecide.

[3] As an herbicide, it is used to control broad-leaved weeds and annual grasses in vegetable crops such as leeks, potatoes,[2] and dwarf French beans.

Following uptake of monolinuron through roots and leaves of weeds, monolinuron causes early symptoms of yellowing and die-back of the leaves, eventually resulting in weed death.

[3] As a herbicide, it is used in a range of food and non-food crops, e.g. beans and other vegetables, onions, fruits, cereals, potatoes, vines and ornamental plants.

It is available under various trade names including Monamex, Gramonol, and Aresin.