Professor Mabel Ifeoma Onwuka is a Professor of Soil Science in the Department of Soil Science and Land Resources Management at Michael Okpara University of Agriculture, Umudike (MOUAU). She holds a B.Sc. in Soil Science, an M.Sc. in Soil Physics, and a Ph.D. in Soil Chemistry from MOUAU, and is a registered Soil Scientist with the Nigeria Institute of Soil Science (NISS).

At MOUAU, Professor Onwuka serves as Director of the Centre for Gender, Youth and Child Development (CGYCD), Supervisor of the MOUAU Greenhouse Project, and Team Lead of the Advanced Smart Agriculture Centre. She is also the Vice President (South-East Zone) of the Biochar Initiative of Nigeria and holds an intellectual property patent for a biochar-based multi-source organic fertilizer for soil regeneration.

Her research focuses on soil health restoration, biochar technology, soil acidity management, and climate-smart agricultural practices. Beyond her academic contributions, she is the founder of the NGO Hope for Farmers, Women and Girls Initiative, dedicated to empowering rural women farmers and supporting girls in science education. Her work has been recognized globally with honors including the Prize for Women's Creativity in Rural Life from the Women's World Summit Foundation (2023) and the Women in Ag Award from the German Agricultural Society (2025).