Khamarunneesa, M, S Sajeena, and V M Abdul Hakkim. “Developing Spatial Maps of Soil Fertility Status and Assessing Impact of Different Fertigation Strategies on Soil Fertility in Kerala, India”. Journal of Agricultural Engineering (India) 62, no. 2 (June 23, 2025): 481–493. Accessed June 4, 2026. https://pub.isae.in/index.php/jae/article/view/2475.