Ikeh, Angus Onwudiwe, Demben Moses Esang, Adaobi Daian Unaegbu, and Ali Rahmat. “Utilization of Organic Soil Amendments to Improve Soil Properties and Groundnut Productivity in an Ultisol of Southeastern Nigeria”. Open Soil Science and Environment 3, no. 2 (December 28, 2025): 83–92. Accessed August 3, 2026. https://soilenvironment.com/index.php/OSSE/article/view/60.