The present invention relates to a system (10) for weed control of a surface (21) of treatment, comprising a water container (12) and a container (14) for biodegradable foam extract, which containers (12, 14) are connected by means of first (12a) and 5 second (14a) conduits, respectively, to a heater (16) for heating a mixture (20) of water and foam extract, which heater (16) is connected to a first pump (18) and further to at least a nozzle (19) adapted to distribute the mixture of water and foam extract on the surface (21) of treatment, wherein the second conduit (14a) comprises a pre-heater (14b) and a second pump (14c), wherein the pre-heater (14b), and the pumps (18, 14c) are adapted to be controlled by means of a user-interface (22) such as a computer controlled monitor and control software for operation thereof and interaction with a user..
