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Effect of Peripheral to Forward Speed Ratio on Overall Performance an Active Tillage Implement: Tractor Drawn Rotavator

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Abstract

In the present study, performance of an active tillage implement (rotavator) was studied at three levels of peripheral to forward speed (u/v) ratio (4.05, 5.87 and 8.34) by varying the forward velocity at a constant peripheral speed of 5.48 m/s and at two tilling depths (80 and 120 mm). The result shows development of negative draft power at all operating conditions, which decreased by increasing the u/v ratio. The rotary power and total equivalent power at power take-off (PTO) were reduced with rise in u/v, and the total equivalent PTO power was lesser compared to rotary power at all operating condition due to the negative draft power. At the two operating depths, the size of soil clods and the percentage reduction of soil strength within the tillage depth, both were found to be decreased by increasing the u/v, whereas a reverse trend was observed on fuel consumption of tractor. However, influence of u/v on soil compaction below the tilling depth was found non-significant. The overall tillage performance of rotavator was found highest at a u/v of 5.87 for both depths of operation. Hence, for operating the rotavator in sandy clay loam soil at any tilling depth, the forward speed should be around 0.98 m/s (in L2 gear) with a u/v of 5.87 to achieve higher tillage performance.

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  1. Agricultural and Food Engineering Department, Indian Institute of Technology Kharagpur, Kharagpur, India

    Anup Behera & Hifjur Raheman

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  1. Anup Behera
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  2. Hifjur Raheman
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Correspondence to Hifjur Raheman.

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Behera, A., Raheman, H. Effect of Peripheral to Forward Speed Ratio on Overall Performance an Active Tillage Implement: Tractor Drawn Rotavator. J. Inst. Eng. India Ser. A 102, 981–988 (2021). https://doi.org/10.1007/s40030-021-00567-4

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