Spatial Variability and Geostatistical Mapping of Soil Physical Properties in Abia State Southeastern Nigeria. The NOUN Journal of Agricultural Research and Development (NJARD), [S. l.], v. 1, n. 1, p. 108–119, 2025. Disponível em: https://journal.agric.nou.edu.ng/agricjournal/index.php/NJARD/article/view/16. Acesso em: 7 jul. 2026.