Production Challenges and Postharvest Practices of Groundnut in Northern Ghana: The Participatory Rural Appraisal Approach - Oppong-Sekyere, D.; Akromah, R.; Nyamah, E. Y.; Ninfaa, A. D.; Braimah, M. M.; Akpalu, M. M.; Salifu, A. R. S. (New Perspectives in Agriculture and Crop Science Vol. 2, 2020)