Ergonomic evaluation of conventional agricultural sprayers with respect to human performance

DOI: 10.18805/asd.v36i3.11443    | Article Id: D-4396 | Page : 179-184
Citation :- Ergonomic evaluation of conventional agricultural sprayerswith respect to human performance .Agricultural Science Digest.2016.(36):179-184

P. Tamilselvi*1 and D. Anantha Krishnan2

Address :

Department of Farm Machinery, Tamil Nadu Agricultural University, Coimbatore-641 003, India.

Submitted Date : 17-03-2016
Accepted Date : 8-07-2016


Ergonomic intervention in spraying operation can provide a reasonable basis for recommendation on operating methods and improvement in operation for more output and safety. Two commercially available sprayers namely knapsack sprayer and rocker sprayer were evaluated with nine male subjects for the study. Age, weight and height of the selected subjects are 30.33±1.93 years, 68.33±9.51 kg and 168.51±5.55 cm respectively. The major operational parameters including pressure and lever arm distance of the sprayers were selected and optimized based on human performance. Heart beat rate and operating energy requirement for ergo refined knapsack and rocker arm sprayers were observed as 93-120 beats per minute, 97-120 beats per minute, and 18.86- 24.31 KJ min-1, 19.27-25.54 KJ min-1 respectively. The field evaluation results showed that ergo refined knapsack sprayer and ergo refined rocker sprayer reduced the energy expenditure by 7% and 8%, oxygen consumption as percentage of VO2 max by 19% and 23%, “HR results gave a reduction of 22% and 23%, ODR results gave a reduction by 4% and 5% and BPDS score indicated a reduction of 13% to 12% respectively from the conventional sprayers. The above results confirmed that the ergo refined sprayers provided better comfort and efficiency to the operator.


BPDS Ergonomics Lever arm distance LOK sprayers ODR VO2 max.


  1. Gurpreet Singh, Shiv Shankar Kumar, Manes, G. S., Anoop Dixit and Arshdeep Singh. (2006). Spray distribution pattern of different sprayers on cotton using droplet analyzer, Journal of Research, SKUAST-J, 10: 33-40. 
  2. Corlett, E.N. and Bishop, R.P. (1976). A technique for assessing postural discomfort. Ergonomics, 19:175-182. 
  3. Gite, L. P., Majumder, J., Mehta, C. R. and Abijit K. (2009). Anthropometric and strength data of Indian agricultural workers for farm equipment design. Coordinating cell AICRP on Ergonomics and Safety in Agriculture, CIAE Bhopal
  4. Gite, L.P. (1991). Ergonomics evaluation of a lever-operated knapsack sprayer. Journal of Applied Ergonomics, 22: 241- 250.
  5. Gite, L.P. (1993). Ergonomics in Indian Agriculture – A review. Paper presented in the International workshop on human and draught animal powered crop protection held at Harare, Jan. 19-22.
  6. Manncsa, (2009). Pesticides in Agriculture, Press Trust of India.
  7. Narsingh Rao, S. (1997). Ergonomic analysis of man machine system on sprayers, Unpublished M.E. thesis in Dept of Farm Machinery, TamilNadu Agricultural University, Coimbatore. 
  8. Saha, P.N., Datta, S.R., Banerjee, P.K. and Narayane, G. (1979). An acceptable workload from a modified scale of perceived exertion, Ergonomics, 37: 485-491.
  9. Tiwari, P.S. and Gite, L.P. (1998). Human energy expenditure during power tiller operations. Paper presented during XXXIII annual convention of ISAE, CIAE, Bhopal, September, pp. 21-23.

Global Footprints