Funding for this research was provided by:
University of Gondar
Received: 17 September 2019
Accepted: 20 May 2020
First Online: 8 August 2020
Ethics approval and consent to participate
: Ethical clearance was obtained from Ethical review committee of university of Gondar Department of Mechanical Engineering and letter of permission was obtained from Fogera woreda agricultural office. Then, participants were informed about the purpose of the study, the importance of their participation and their right to withdraw at any time. Informed consent was obtained prior to data collection. Confidentiality of the information was maintained and no identifying information was collected from participants.
: The authors declare no competing interests.