Obalum SE, Oppong J, Nwite JC, Watanabe Y, Buri MM, Igwe CA, Wakatsuki T. Long-term effects of lowland sawah system on soil physicochemical properties and rice yield in Ashanti Region of Ghana. Span. j. agric. res. [Internet]. 2012Jun.19 [cited 2025May4];10(3):838-4. Available from: https://sjar.revistas.csic.es/index.php/sjar/article/view/2335