Interpretive Summary: Global Farm Platform: Pioneer Farm Agroecosystem Research as a long-term hub-and-spoke approach for livestock-integrated systems in the Upper Mississippi River Basin, United States

By: Andrew D Cartmill, Dennis L Busch

Implications

• Effective evaluation of agroecosystem sustainability requires research infrastructures capable of capturing long-term interactions among soil, water, biodiversity, and management.
• Hub-and-spoke research architectures provide a scalable framework for integrating controlled experimentation with real-world farming complexity, improving the adoption potential of agroecological innovations.
• Embedding farmer-led watershed groups within research networks enhances the legitimacy, relevance, and scalability of outcomes, particularly for nutrient management, water quality, and ecosystem services.
• Long-term, research platforms such as the Pioneer Farm Agroecosystem Research platform are essential for informing policy, supporting adaptive management, and enabling cross-scale synthesis.

Introduction

Agroecological research operates at the intersection of biophysical processes, management decisions, and institutional constraints, requiring approaches that move beyond traditional experimental paradigms to address real-world agricultural complexity. In many regions, these agroecosystems are structured around crop–livestock systems, where animals play a central role in mediating the flow of energy and nutrients across landscapes (Lemaire et al., 2014; Martin et al., 2016). As a result, agricultural sustainability is closely linked to livestock production, feed systems, manure management, and their interactions with soil and water processes. In confined dairy and mixed crop–livestock systems, livestock influence nutrient cycling primarily through feed production, manure collection, storage, and land application, linking animal production directly to soil fertility and environmental outcomes (Steinfeld and Wassenaar, 2007; Tully and Ryals, 2017). These linkages are particularly important for understanding water quality and nutrient loss pathways, as the timing, placement, and rate of nutrient applications interact with soil conditions and climatic variability to determine both nutrient use efficiency and environmental risk (Meals et al., 2010; Saha et al., 2023). Nutrient redistribution through manure management introduces spatial and temporal complexity, often creating uneven patterns of nutrient accumulation and loss across fields and landscapes (Méité et al., 2024; Xu et al., 2026).

Read the full article in Animal Frontiers.