ALMAVERDE Operational Surpo: Sustainable nitrogen management in Almudévar
- Type Operational group
- Status In progress
- Execution 2025 -2028
- Assigned Budget 150.000,00 €
- Scope Autonómico
- Autonomous community Aragón
- Main source of financing CAP 2023-2027
The Almaverde project will achieve transformative results at the economic, environmental and social levels through integrated irrigation and fertilization management.
Economically, it will guarantee profitability by reducing spending on fertilizers (30-50%) and water or energy (15-20%), maintaining or increasing yields to generate an additional net profit of up to €200/ha in intensive crops.
From an environmental perspective, it will drastically reduce leaching, decreasing the nitrate load exported by between 50% and 80% to restore water quality below the legal limit of 50 mg/L, while also mitigating the carbon footprint of agricultural activity. Finally, from a socio-technical perspective, it will promote technological training for farmers and foster more skilled, stable, and sustainable rural employment in the local area.
The project is structured around four main objectives: to validate, under real field conditions, the reduction of nitrate leaching by comparing conventional management with optimized irrigation and nitrogen fertilization management in crops such as corn, cereals, and alfalfa, including measuring nitrate load in irrigation returns over two seasons; to implement an integrated irrigation and fertilization management system in pilot plots, with moisture and water quality sensors and variable fertilization supported by prescription maps obtained by remote sensing; to transfer the results to the agricultural sector through demonstration days and best practice guides; and to ensure technical, administrative, and dissemination coordination among the partners of the Operational Group.
To achieve these objectives, the project includes a structured set of technical, demonstrative and coordination activities.
- In the experimental setting, representative plots will be selected and crop schedules will be defined, applying in a differentiated manner the current management and the optimized management of irrigation and fertilization, with continuous agronomic control throughout the production cycle.
- Simultaneously, flow measurement equipment will be installed at return points, periodic water sampling with laboratory analysis will be carried out, and both the concentrations and masses of exported nitrates will be calculated.
- In the pilot plots, moisture and water quality probes will be installed and calibrated, integrating the data obtained to support decision-making, while monitoring by multispectral drone and other remote observation sources will allow the generation of prescription maps for the sectorized application of fertilizers.
- In addition, field days open to the sector will be organized, technical content adapted to different audiences will be designed, and guides and informational materials will be prepared for distribution in networks, events and specialized media.
- All of this will be complemented by coordination activities, regular follow-up meetings, provision of data on capacity and quality of returns, and active collaboration of the partners in training and in the transfer of results to the irrigated environment.
The project aims to validate, under real field conditions and through a local cooperation approach involving farmers, irrigation communities, and technical experts, the environmental effectiveness of an integrated irrigation and nitrogen fertilization management model for reducing diffuse nitrate pollution in irrigated areas. Building on the solid scientific foundation established in the CRA pilot area and the previous results obtained with the DSSAT and SWAT models, which estimate significant reductions in nitrogen leaching and export without compromising agricultural productivity, the initiative seeks to operationally verify the extent to which the coordinated application of best practices in water and nitrogen management reduces nitrate concentrations in surface and groundwater, thus advancing towards more efficient and sustainable irrigation aligned with the environmental requirements of European regulations.
- Entity name: Almudévar Irrigation Community
- Postal address: PLAZA DE ESPAÑA N º2 22270 Almudévar (HUESCA)
- Email: cralmudevar@gmail.com
- Telephone: 974250082
- Entity name: Coop. Virgen de la Corona
- Postal address: Avenida Cooperativista Máximo Samper, S/N 22270 Almudévar (Huesca)
- Email: tecnico@covico.es
- Telephone: 974250000
- Comunidad de Regantes de Almudévar
- Coop. Virgen de la Corona