Obalum, Sunday Ewele, Department of Soil Science, University of Nigeria, Nsukka, Nigeria
Obalum, Sunday E., Department of Soil Science, Faculty of Agriculture, University of Nigeria, Nsukka, 410001, Enugu State Prince Abubakar Audu University, Anyigba, PMB 1008 Anyigba, Kogi State
Obalum, Sunday Ewele, Department of Soil Science, Faculty of Agriculture, University of Nigeria, Nsukka
Obi, Justina O., Department of Crop Science, Faculty of Agriculture, University of Nigeria, Nsukka, 410001, Enugu State
Obi, Martin E., Department of Soil Science, Faculty of Agriculture, University of Nigeria, Nsukka, 410001, Enugu State
Octalyani, Erninda, Department of Soil Science, Faculty of Agriculture, Universitas Lampung, Bandar Lampung
Ogunjobi, Adeniyi, Department of Microbiology, University of Ibadan
Ogunwole, Joshua, Bowen University, Iwo, P.M.B. 284, Osun State
Okorie, Benedict Odinaka, Department of Plant Physiology, Biochemistry, and Genetics. Agricultural University – Plovdiv
Olivares Campos, Barlin Orlando, Universidad de Córdoba
Onah, Chinaza J., Department of Soil Science, Faculty of Agriculture, University of Nigeria, Nsukka, 410001, Enugu State
Osakwe, Uju Chinwe, Department of Soil Science & Land Resources Management, Federal University, Oye-Ekiti, Ekiti State
Ozongwu, Ogorchukwu V., Department of Soil Science, Faculty of Agriculture, University of Nigeria

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