Field Evaluation of Engine Operated Weeder for System of Rice Intensification
Abstract
The growing adoption of the System of Rice Intensification (SRI) necessitates innovative solutions to improve agricultural yield and efficiency. This study presents the design and development of an engine-operated wetland weeder tailored for SRI practices. The primary objective is to evaluate the weeder's performance, compatibility with SRI methods, and overall performances. The engine-operated weeder was designed with a focus on optimizing weeding efficiency, operational ease, and durability in wetland conditions. It features a robust engine, adjustable weeding mechanism, and ergonomic design to accommodate the unique requirements of SRI Field. Field evaluations were conducted across multiple SRI Rice paddies, representing varied soil types, water levels, and field sizes. Performance metrics, including weeding efficiency, operational efficiency, and fuel consumption, were systematically recorded. Additionally, user feedback was collected to assess ease of use, comfort, and maintenance needs. The findings indicate that the engine-operated weeder significantly improves weeding efficiency compared to traditional methods, with notable reductions in labor time and operational costs. It aligns well with SRI practices, enhancing soil aeration and weed control without disrupting the rice plants. This evaluation underscores the potential of engine-operated weeders to support sustainable rice cultivation practices and improve productivity in the context of the System of Rice Intensification. It was found that the power unit with weeder has a operational capacity of 0.035 ha/h with 79 per cent weed removal effectiveness and 92per cent operational efficiency.
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Copyright (c) 2025 Nandhini R, Ganapathi D, Nandhini S, Ibrahim Sheriff K.A, Balasundaram

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