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Energy-Efficient Unmanned Ground Vehicle (UGV) for Precision Root Zone Fertilizer Implantation toward Sustainable Agriculture
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1  Farm Machinery and Power Engineering, ICAR-Indian Agricultural Research Institute, New Delhi, 110012, India
Academic Editor: Jose Ramon Fernandez

Abstract:

Fertilizer management plays a vital role in sustaining crop productivity and soil health. Conventional broadcasting techniques often lead to nutrient losses through leaching, volatilization, and runoff, resulting in reduced fertilizer use efficiency, often resulting in considerable nutrient losses, repeated field operations, and increased energy demand, thereby contributing to environmental pollution and inefficient resource utilization. To address these challenges, precision application methods such as root zone fertilization have gained importance, ensuring nutrients are delivered closer to the plant’s uptake region for enhanced efficiency. This research focuses on the introduction of an Unmanned Ground Vehicle (UGV) for precise fertilizer implantation in the root zone of wide-row crops. The energy-efficient Unmanned Ground Vehicle (UGV) system comprises key components including a chassis with an electric drive mechanism, a GPS-based navigation and positioning unit, a soil-probing and penetration tool, and a controlled fertilizer metering and delivery system. The coordinated operation of these components enables accurate placement of fertilizer at predefined depths and spatial intervals, ensuring targeted nutrient delivery with minimal human intervention. Such precision reduces off-target fertilizer losses and enhances nutrient uptake efficiency by placing nutrients closer to the active root zone of plants. From an energy perspective, the proposed UGV system offers multiple advantages over conventional tractor-based fertilizer application methods. Targeted fertilizer implantation near the root zone enhances nutrient uptake efficiency and lowers fertilizer losses to the surrounding environment caused by leaching and volatilization. Consequently, the system reduces the frequency of fertilizer applications and associated energy-intensive field operations. The use of electric drive further supports reduced fossil fuel dependence and lower operational emissions compared to conventional machinery. The proposed UGV-based root zone fertilizer implantation system highlights strong potential to improve energy efficiency, reduce environmental impacts, and support sustainable nutrient management practices. The study highlights the role of electrically powered autonomous machinery as a viable solution for low-energy, climate-resilient agricultural systems, aligning with global efforts toward sustainable energy utilization in modern agriculture.

Keywords: Unmanned Ground Vehicle; Root zone fertilization; Precision Agriculture; Automation; Energy-efficient agriculture
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