Integrating soil and crop metrics with precision agriculture: Pusa N Doctor app for sustainable nitrogen management in maize - Sayantika Sarkar; Pravin Kumar Upadhyay; Abir Dey; Utpal Ekka; Sanjay Singh Rathore; Kapila Shekhawat; Md. Yeasin; Rajiv Kumar Singh; Subhash Babu; Anchal Dass; Tarik Mitran; Navin Kumar Sharma; et al. (PLoS ONE, 2025)