TRACTOR

Efficient fuel utilization is a major concern in mechanized agriculture, especially during soil tillage operations such as harrowing. Fuel costs account for a significant proportion of farm operation expenses, and optimizing tractor fuel consumption has direct implications on profitability and sustainability. This study investigated the variability of specific volumetric fuel consumption (SVFC) during harrowing in loamy sand and clay loam soils. Field experiments were conducted at varying depths (10 cm, 13 cm, and 16 cm) and speeds (4 km/h, 6 km/h, and 8 km/h). Parameters such as soil bulk density, cone index, draught force, power output, and moisture content were measured to establish their influence on SVFC. Results revealed that soil type, depth of operation, and tractor forward speed significantly affected SVFC, with loamy sand soils exhibiting lower draught resistance but higher fuel consumption variability compared to clay loam soils. Statistical analyses including ANOVA and paired t-tests confirmed that SVFC differences between soil types were significant (p < 0.05). The findings highlight the importance of specific soil management strategies for improving tractor fuel efficiency. This study provides useful insights for farmers, engineers, and policymakers seeking to optimize energy use in agricultural mechanization, reduce production costs, and enhance sustainable food production