Uruguay Leads the Way in Precision Nitrogen Fertilization with OptiFert-N Colza
Uruguay’s agricultural sector is embracing a new era of efficiency with the preliminary release of OptiFert-N colza, a public model designed to optimize nitrogen fertilization in rapeseed (colza) crops. Developed by the Instituto Nacional de Investigación Agropecuaria (INIA), this tool promises to refine fertilizer application, aligning it with the actual potential of the crop and contributing to both economic and environmental benefits.
A Growing Need for Precision in Brassica Crops
The development of OptiFert-N colza comes as brassica crops – including colza, carinata, and camelina – gain prominence in Uruguayan agriculture. In the 2025 growing season, these crops covered 297,000 hectares, with colza accounting for 85% of that area. This significant expansion underscores the need for specialized tools to maximize yields and minimize waste.
How OptiFert-N Colza Works: A Data-Driven Approach
OptiFert-N colza builds upon the success of existing INIA models for wheat and maize (OptiFert-N trigo and OptiFert-N maíz). The system requires producers to collect samples to determine accumulated biomass and nitrogen concentration within their fields. Based on this data, alongside records of previous fertilizer applications, the model provides an objective estimate of the optimal nitrogen dose for the period before flowering.
Sebastián Mazzilli, director of INIA’s Agricultural and Livestock System, emphasized the importance of accurate assessment. “It’s not just about fertilizing better, but avoiding adding nitrogen when the crop already has a compromised potential and won’t respond,” he stated. This targeted approach reduces unnecessary input costs and minimizes environmental impact.
Beyond Nitrogen: The Future of Precision Agriculture in Uruguay
INIA’s commitment extends beyond nitrogen management. Researchers are actively investigating how brassica crops can enhance overall agricultural systems, evaluating their impact on subsequent crops and rotational sequences. A forthcoming expanded guide to best practices for colza management, developed in collaboration with the Faculty of Agronomy and the Technological Laboratory of Uruguay, will further support producers in achieving optimal results and meeting export standards.
Streamlining Biomass Measurement with Technology
Currently, producers must send samples to a laboratory to determine biomass. INIA aims to integrate spectral indices to estimate biomass directly from field data, mirroring the functionality already available for wheat and maize. This would allow producers to simply identify the field polygon within the INIA application to receive a biomass estimate, streamlining the process and reducing turnaround time.
OptiFert-N: Part of a Larger Digital Ecosystem
OptiFert-N is a component of a broader digital platform designed to optimize crop management. Developed by DigitalProjex, the platform integrates high-precision technical models from INIA, allowing producers to manage properties and paddocks, analyze climate and soil data, and explore different application scenarios. It too features a RESTful API for integration with other systems and is accessible as a Mini App within INIA’s institutional Super App.
The Broader Implications for Global Agriculture
Uruguay’s advancements in precision fertilization offer valuable lessons for agricultural regions worldwide. The focus on data-driven decision-making, coupled with the development of accessible digital tools, represents a significant step towards more sustainable and efficient farming practices. As climate uncertainty and resource constraints continue to challenge agriculture, these types of innovations will turn into increasingly crucial.
Did you grasp? The models behind OptiFert-N are built on over a decade of experimental results gathered by INIA and the Faculty of Agronomy.
FAQ
Q: What is OptiFert-N colza?
A: It’s a public model developed by INIA to optimize nitrogen fertilization in rapeseed crops during the elongation period.
Q: When will OptiFert-N colza be available?
A: It will be available for the 2026 winter growing season.
Q: What data do producers need to apply OptiFert-N colza?
A: Producers need to collect samples to determine biomass and nitrogen concentration.
Q: What are the benefits of using OptiFert-N colza?
A: It improves nitrogen use efficiency, adjusts fertilizer doses to the crop’s potential, and reduces economic and environmental costs.
Pro Tip: Accurate sampling is key to getting the most out of OptiFert-N. Follow INIA’s guidelines for sample collection to ensure reliable results.
Want to learn more about sustainable agricultural practices? Explore additional resources on the INIA website.