IJAH, Christiana James; IYANAM, Mfoniso Victory; ESSIEN, Gloria Emmanuel; ROBSON, Mary Sunday; EFFIONG, Idongesit Bassey. Forms and Status of Potassium in Soils Supporting Rubber (Havea brasiliensis) Plantations in three Locations in Akwa Ibom State, Nigeria. Direct Research Journal of Agriculture and Food Science, [S. l.], v. 12, n. 3, p. 18–24, 2024. Disponível em: https://journals.directresearchpublisher.org/index.php/drjafs/article/view/58. Acesso em: 16 apr. 2026.