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Purpose <p>This study investigates how blade type, forward speed, and tillage depth jointly influence power requirements and soil tillage quality during rotary tillage. While previous studies have mostly assessed these factors independently, limited research has explored their combined effects under field conditions. To address this gap, the performance of four commonly used rotavator blade types is evaluated to identify energy-efficient operating settings that achieve desirable soil tilth quality.</p> Methods <p>This study was conducted on a 1.76&#xa0;m wide down-cut rotavator with four commercially available blade types (L, C, LJF, and J type) under varying forward speeds and tillage depths in sandy loam soil. Measurements focused on key parameters such as PTO torque, power consumption, soil mean weight diameter (SMWD), and reduction in bulk density.</p> Results <p>PTO torque and equivalent PTO power increased with higher forward speeds and tillage depths, while soil pulverization (measured by SMWD) and bulk density reduction declined. LJF-type blades showed the highest energy demand (178.02 N·m, 11.65&#xa0;kW), while C-type blades required the least (143.52 N·m, 9.92&#xa0;kW). L-type blades offered the best balance between tillage quality and energy efficiency. At a tillage depth of 100&#xa0;mm, optimal forward speeds were 2.05, 2.28, 1.85, and 1.96&#xa0;km/h for L, C, LJF, and J-type blades, respectively. L-type blades also recorded the lowest power consumption (9.01&#xa0;kW), followed by C-type (9.32&#xa0;kW), indicating better energy efficiency.</p> Conclusion <p>The study provides a unique multi-factor field-based comparison of commercially available blade types and identifies blade-specific optimized operating conditions for sandy loam soils. The findings support practical decision-making toward improving energy efficiency and soil tilth quality in rotary tillage operations.</p>

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Influence of Blade Type and Operating Parameters of a Rotavator on Power Demand and Soil Tillage Quality

  • 期刊论文

  • 发表日期：

    2026年1月26日

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  • Sunil Kumar,
  • Naresh Sihag,
  • Ganesh Upadhyay,
  • Vijaya Rani,
  • Swapnil Choudhary,
  • Bharat Patel

摘要

Purpose

This study investigates how blade type, forward speed, and tillage depth jointly influence power requirements and soil tillage quality during rotary tillage. While previous studies have mostly assessed these factors independently, limited research has explored their combined effects under field conditions. To address this gap, the performance of four commonly used rotavator blade types is evaluated to identify energy-efficient operating settings that achieve desirable soil tilth quality.

Methods

This study was conducted on a 1.76 m wide down-cut rotavator with four commercially available blade types (L, C, LJF, and J type) under varying forward speeds and tillage depths in sandy loam soil. Measurements focused on key parameters such as PTO torque, power consumption, soil mean weight diameter (SMWD), and reduction in bulk density.

Results

PTO torque and equivalent PTO power increased with higher forward speeds and tillage depths, while soil pulverization (measured by SMWD) and bulk density reduction declined. LJF-type blades showed the highest energy demand (178.02 N·m, 11.65 kW), while C-type blades required the least (143.52 N·m, 9.92 kW). L-type blades offered the best balance between tillage quality and energy efficiency. At a tillage depth of 100 mm, optimal forward speeds were 2.05, 2.28, 1.85, and 1.96 km/h for L, C, LJF, and J-type blades, respectively. L-type blades also recorded the lowest power consumption (9.01 kW), followed by C-type (9.32 kW), indicating better energy efficiency.

Conclusion

The study provides a unique multi-factor field-based comparison of commercially available blade types and identifies blade-specific optimized operating conditions for sandy loam soils. The findings support practical decision-making toward improving energy efficiency and soil tilth quality in rotary tillage operations.