Evaluation of Grain Losses as Affected by Combine Forward Speed

R.Bawatharani and D.N.Jayatissa
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R.Bawatharani: Department of Agricultural Engineering, Faculty of Agriculture, Eastern University, SRI LANKA
D.N.Jayatissa: Department of Agricultural Engineering, Faculty of Agriculture, Eastern University, SRI LANKA

International Journal of Research and Innovation in Applied Science, 2023, vol. 8, issue 2, 68-72

Abstract: Header losses were evaluated at forward speeds 4.24, 2.95 and 2.04 km/h in combine A and 3.81, 2.73 and 1.9 km/h in combine B. Header grain losses initially decreased with an increasing forward speed from 2.04 km/h to 2.95 km/h but increased with an increase of the speed from 2.95 to 4.24 km/h in combine A. Header grain losses were also increased due to the increase of the speed from 2.73 to 3.81 km/h from combine B. Forward speed of 2.95 km/h in combine A and 2.73 km/h in combine B resulted in lower header losses of 38.7 and 45.8 kg/ha, respectively. The increasing forward speed of combine A from 2.01 to 4.24 km/h increased the effective field capacity from 0.245 to 0.38 ha/h. Similarly, in combine B forward speeds from 1.9 to 3.81 km/h increased effective field capacity from 0.175 to 0.197 ha/h. Increasing forward speed in combine A from 2.01 to 4.24 km/h decreased the field efficiency from 60.9% to 49.3%, whereas, increasing forward speed from 1.9 to 3.81 km/h decreased the field efficiency from 50.8% to 30.6% in combine B.

Date: 2023
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