HIKMATULLAH OBAID, et al. “Optimization of Nitrogen and Phosphorus Fertilizers Doses in Hybrid Maize (Zea Mays) in Kandahar Province of Afghanistan”. Indian Journal of Agronomy, vol. 63, no. 4, Apr. 2024, pp. 521-3, https://doi.org/10.59797/ija.v63i4.5693.