Posted: July 15, 2019

Our new Journal of Environmental Quality paper on the the evolution of phosphorus (P) management decision support tools (DSTs) and systems (DSS) is out!

The evolution of phosphorus (P) management decision support tools (DSTs) and systems (DSS), in support of food and environmental security, has been most strongly affected in developed regions by national strategies to (1) optimize levels of plant available P in agricultural soils, and (2) mitigate P runoff to water bodies. Farmer-specific DSSs, either based on modeling of P transfer source and transport mechanisms, or when coupled with farm-specific information or local knowledge, have typically guided best practices, education and implementation. Recent developments, focused on integrated digital mapping of hydrologically sensitive areas and critical source areas, sometimes using real-time data and weather forecasting, have rapidly advanced runoff modelling and education. Advances in technology related to monitoring, imaging, sensors, remote sensing and analytical instrumentation will facilitate the development of DSSs that can predict heterogeneity over wider geographical areas. However, significant challenges remain in developing DSSs that incorporate "big data" in a format that is acceptable to users, and that adequately accounts for catchment variability, farming systems, and farmer behavior. Future efforts will undoubtedly focus on improving efficiency and conserving phosphate rock reserves in the face of future scarcity or prohibitive cost. Most importantly, the principles reviewed here are critical for sustainable agriculture.

A Global Perspective on the History of Phosphorus Management Decision Support Approaches in Agriculture: Lessons Learned and Directions for the Future

Patrick Drohan; Marianne Bechmann; Anthony Buda; Faruk Djodjic; Donnacha Doody; Jonathan Duncan; Antti Iho; Phil Jordan; Peter J.A. Kleinman; Richard McDowell; Per-Erik Mellander; Ian Alistair Thomas; Paul Withers
doi: 10.2134/jeq2019.03.0107; Date posted: July 02, 2019