The present disclosure is directed to a controlled on-demand irrigation system. In an implementation, the on-demand irrigation system includes a control device configured to control supply of an aqueous solution and semi-porous supply lines. The semi-porous supply lines have a porosity characteristic configured to be altered when acted upon by a surfactant root exudates to permit a flow of the aqueous solution therethrough. The control device is configured to cause injection of the aqueous solution upon a determination that an amount of aqueous solution within the semi-porous supply lines is below an aqueous solution threshold.
