SAYANTIKA SARKAR et al. 2025. Leveraging Smartphone-Based Tools for Nitrogen Management: Insights into Photosynthetic Rate, Radiation Use Efficiency, and Fractional Interception of PAR in Maize. Indian Journal of Agronomy. 70, 3 (Sep. 2025), 361–363. DOI:https://doi.org/10.59797/ija.v70.i3.5630.