Abstract

FURLANI, Carlos Eduardo Angeli; LOPES, Afonso; SILVA, Rouverson Pereira da  and  REIS, Gustavo Naves dos. Seeder requiriment changing the speed and soil surface condition. Cienc. Rural [online]. 2005, vol.35, n.4, pp. 920-923. ISSN 0103-8478.  http://dx.doi.org/10.1590/S0103-84782005000400027.

The objective of the work was to evaluate the performance of a set tractor-four lines seeder, when and operating at different tractor gears and soil tillage, on corn crop planting. The sowing was carried out through in dark-red Oxisoil, eutrophic. The treatments designs had been composites of tillage systems (conventional, reduced and no-tillage) and marches of the set tractor-seeder (5.9 and 7.0km h^-1). The experimental delineation was in a randomized blocks design in factorial array of 3 x 2 with 4 replications. The analyzed variables had been: forward speed, field operational capacity, hourly and area fuel consumption, wheels lip, draft force and drawbar power. The speed, the wheels lip and fuel consumption had been higher for gear M2 (7.0km.h^-1) when operating in soil prepared by reduced soil tillage also presented greater values fuel consumption and lower speed of sowing.

Keywords : field capacity; performance; fuel consumption.