The support (10) has a web (16) made of fibers of plant origin, a set of irrigation tubes (18), and another web (20) that is utilized for maintenance of the irrigation tubes and for diffusion of water that is output from the irrigation tubes. A third web (22) is arranged with a set of bands, where the third web enters the irrigation tubes, and the three webs are arranged between the irrigation tubes. A biodegradable regulation film (24) is arranged on a lower face of the first web.
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