Power requirement analysis for efficient harvesting of finger millet

Abstract

Finger millet is a hardy, tufted annual grass that produces tillers and can grow up to 170 cm tall, featuring upright, slender stems that root at the lower nodes. Lack of appropriate machinery is one of the barriers to increasing the production and productivity of the finger millet crop. Determining power requirements for harvesting finger millet is crucial for designing an efficient, cost-effective harvesting machine. This study analyzes key factors influencing power consumption, including crop characteristics, harvesting methods and machine parameters. Laboratory experiments and theoretical calculations were conducted to assess parameters such as cutting force, material resistance and energy input required for effective harvesting. Developing a harvester for finger millet requires integrating cutting, conveying and windrowing functions. During harvesting, the finger millet crop is subjected to shearing action; hence, the cutting force for harvesting finger millet is determined using a cutter bar test rig. This study focuses on determining the power requirements necessary for optimal machine performance. Based on an analysis of cutting force and the quantity of material handled, the total power requirement was calculated to be 6.78 horse power (hp). The findings provide valuable insights for developing energy-efficient harvesting machinery, ultimately enhancing productivity and reducing labor dependency in finger millet harvesting.