Kebenei, M. C., Mucheru-Muna, M., & Muriu-Ng’ang’a, F. (2023). The potential of Zai pit technology and Integrated soil fertility management to enhance crop productivity in semi-arid regions of Sub-Sahara Africa: A review. International Journal of Environment, Agriculture and Biotechnology, 8(1). https://i.agriculturejournals.org/index.php/ijeab/article/view/162