_____________________________________________________________________________________________________ ⱷ PhD Scholar; # Professor and Head; † Research Engineer; *Corresponding author: E-mail: nkp7378@gmail.com; International Journal of Plant & Soil Science 34(23): 1191-1200, 2022; Article no.IJPSS.93812 ISSN: 2320-7035 Development and Ergonomic Assessment of Manually Operated Modified Linseed Crop Thresher Naveendra Kumar Patel aⱷ* , Sheen Cline Moses a# and Rana Noor Aalam a† a Department of Farm Machinery and Power Engineering, VIEAT, SHUATS, Prayagraj, U.P., India. Authors’ contributions This work was carried out in collaboration among all authors. All authors read and approved the final manuscript. Article Information DOI: 10.9734/IJPSS/2022/v34i232532 Open Peer Review History: This journal follows the Advanced Open Peer Review policy. Identity of the Reviewers, Editor(s) and additional Reviewers, peer review comments, different versions of the manuscript, comments of the editors, etc are available here: https://www.sdiarticle5.com/review-history/93812 Received 07 September 2022 Accepted 14 November 2022 Published 15 November 2022 ABSTRACT Manually operated modified linseed crop thresher was developed from ergonomics considerations. Anthropometric data were taken in selected age subjects 25-40 years for male workers. Anthropometric data regarding body dimensions were obtained for male workers from SHUATS, Prayagraj. During the methods of threshing operation (thresher and traditional method) the working heart rate was recorded with proper technique and oxygen consumption rate, energy expenditure rate and body parts discomfort scoring was obtained. The heart rate, oxygen consumption, energy expenditure rate and BPDS were obtained in the mean value 115.19 beats/min, 0.63 l/min, 9.59 kJ/min and 44.93 for thresher operating whereas 127.56 beats/min, 0.77 l/min, 11.56 kJ/min and 55.43 for traditional method operating. Keywords: Linseed crop thresher; crop; traditional methods; ergonomics; hear rate; oxygen consumption; energy expenditure rate and BPDS. Original Research Article