[ca] L'objectiu inicial d'aquest treball ha estat estudiar l'efecte de l'hidromulch en la inhibicio de la emergencia de sis especies considerades males herbes (Amaranthus retroflexus, Digitaria sanguinalis, Diplotaxis erucoides, Lactuca serriola, Stellaria media i Sonchus oleraceus). A mes a mes es vol quantificar la proporcio que ha estat inhibida i saber quina ha estat la causa principal d'aquesta inhibicio (la induccio a un estat de latencia o el fracas al no poder superar la barrera fisica imposada per l'hidromulch). L'hidromulch esta composat principalment per pasta de paper i es barreja amb un segon material per donar-li consistencia. En aquest treball es comparen dos hidromulch diferents, un barrejat amb palla i l'altre amb clofia d'arros. A mes a mes s'utilitzen dos gruixos i dos regims de reg per aconseguir dos nivells d'humitat diferents. D'aquesta manera tambe es podra fer una prediccio de quin material es mes valid pel control de males herbes. D'acord amb la temperatura que es va utilitzar, de les sis especies seleccionades inicialment dues, D. erucoides i S. media, van ser descartades del experiment degut a que no van superar el llindar del percentatge de germinacio desitjable. Els resultats de l'experiment han estat favorables i s'ha observat una reduccio molt notable de l'emergencia de plantules, sent la proporcio emergida el 15.2 % en A. retroflexus, 11.4 % en D. sanguinalis, 12.4 % en L. serriola i el 11.6 % en S. oleraceus. Tambe es van comptabilitzar les llavors que havien germinat pero no havien pogut emergir i per una altra banda es va fer el test del tetrazoli a les llavors que havien quedat sobre l'hidromulch per coneixer la seva viabilitat. A partir d'aquests resultats s'ha pogut deduir que l'efecte principal causat per l'hidromulch ha estat la induccio de les llavors a un estat latent.

[en] The initial aim of this work is to study the inhibitory effect of hydromulching on the emergence of six common weeds (Amaranthus retroflexus, Digitaria sanguinalis, Diplotaxis erucoides, Lactuca serriola, Stellaria media and Sonchus oleraceus). In addition, this study aims to quantify the extent of this inhibition, as well as to determine the main cause for it (either the induction of a dormant state or the failure of the seedling to overcome the physical barrier posed by the hydromulch). Hydromulch is mainly composed of paper pulp, being then mixed with a second material to give it consistency. In this study, two different hydromulching materials are compared: straw and rice husk. Furthermore, two different consistencies as well as two different watering regimes are studied. In accordance with the temperature used during the first control experiment, two out of the six initial species (D. erucoides and S. media) were removed from the study due to a failure in reaching the desired percentage threshold of germination. The results of the experiment were favourable and a great reduction in weed emergence was observed. The proportions of this emergence were: 15.2% for A. retroflexus, 11.4% for D. sanguinalis, 12.4% for L. serriola and 11.6% for S. oleraceus. The germinated seeds that could not get through the hydromulch were also counted and to the seeds remaining under the hydromulch was applied a tetrazolium test in order to determine their viability. From these results we were able to deduct that the main effect exerted by the hydromulch was the induction of the seeds into a dormant state.