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Performance of tractor tire type in areas with three conditions of surface: loose soil, firm soil, soil covered with sugarcane straw


The aim of this work is to quantify the traction efficiency of a tractor fitted with diagonal and radial tires in conditions of soil with firm surface, disturbed surface (scarified) and soil with a vegetal covering. The experimental layout will use three strips, defined by the conditions of the ground surface, distributed in random blocs in a factorial scheme of 2x4, with the treatments being defined by the two types of tire and four speeds of the tractor, with three repetitions in each strip, totaling 72 experimental units. Monitoring will be carried out of the force of traction, skidding of the rear and front wheels, dislocation speeds and hourly fuel consumption, using the UMEB – the Mobile Unit for Traction Bar Trials belonging to Nempa – Nucleus for Agroforestry Machine and Tire Trials. UMEB was built using a mobile home-type trailer, modified and adapted for use as an instrumented dynametric car. Its total mass is 8,000 kg supported on a frame with four double-wheel sets. (AU)

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