Abdullah, Anuar B., Nurul Afza Karim, Md. Akhir Hamid, Shahmihaizan Mat Jusoh, Mohd Fazly Mail, Khairul Idzwan Ayub, Norahshekin Abdul Rahman, and Zawayi Mat. 2020. “3 In 1 Disc Ridger: Development of An Improved Implement For Sweet Potato Plant-Bed Making, Fertilizing and Mechanical Weeding”. Advances in Agricultural and Food Research Journal 2 (2). https://doi.org/10.36877/aafrj.a0000170.