Real-time monitoring of fertilizer runoff at the watershed scale using a low-cost solar-powered Lego-like electrochemical water quality monitoring system. - Muhammad Masud Rana; Sarath Gopalakrishnan; Akshay Krishnakumar; Sotoudeh Sedaghat; Devendra Sarnaik; Amin Zareei; Michael Douglas Ruffatti; Spencer Hagaman; Jason Lehto; Ali Shakouri; Shalamar Armstrong; Rahim Rahimi (Comput. Electron. Agric., 2025)