La gran majoria d'hivernacles situats en clima mediterrani són de cost relativament baix i de tecnologia senzilla. El cultiu en hivernacle te com a objectiu principal incrementar la producció agrícola per unitat de superfície mitjançant l'aïllament de les condicions del medi. Aquest projecte presenta inventaris detallats i de qualitat del cicle de vida complet del compost amb aplicació en aire lliure i en hivernacle, aportant informació dels impactes ambientals i avaluant la viabilitat agronómica del compost com a fertilitzant quan s’aplica en cultius hortícoles. S’han considerat quatre opcions de cultiu, depenent del tipus de fertilitzant utilitzat (fertilitzans minerals o compost) i de si el cultiu és a l’aire lliure o en hivernacle. Les dades s’han obtingut experimentalment en parceles pilot i en una planta de compostatge industrial, ambdos localitzats prop de Barcelona, en una àrea mediterrànea. Per al cultiu en hivernacle, s’han obtingut produccions de tomàquet superiors a les d’aire lliure en el cas d’aplicar fertilitzants minerals, mentre l’ús de compani són de cost relativament baix i de tecnologia senzilla.

The vast majority of greenhouses in Mediterranean climate are still of the low cost and technology type. Greenhouse cultivation aims to obtain the highest yield per area used through isolation from environmental conditions. This project presents detailed and quality inventories of the complete compost cycles in both open-field and greenhouse, providing information on the environmental impacts and assessing the agronomic viability of compost as a fertilizer when it is used for horticultural crops. Four cultivation options were considered, depending on the fertilizing option applied and the field location. The data were obtained experimentally in pilot fields and in an industrial composting facility, both located in the Mediterranean area. In greenhouse, major tomato productions than in open field were harvested using mineral fertilizer, while the use of compost as only fertilizer seems to not be able. Greenhouse options increased infrastructural materials requirements but water and pesticides were reduced. Considering the avoided burdens, the comparison of results for greenhouse and open field revealed that the former was more environmentally impacting than the latter for both options (C and M) and most of the impact categories when experimental harvests were considered. For the standard productions of the region, the impacts were nearly the same between greenhouse and open field crops considering mineral fertilizer treatment.