This work aimed to evaluate the behavior of the traction force requested by a seeder-drill varying the number of lines of sowing. The experiment was leaded in the Experimental Nucleus of Agricultural Engineering - NEEA, belonging to the UNIOESTE - Campus of Cascavel, Paraná, Brazil, in Red Latosoil Haplortox with plane relief and loamy texture. The experimental design used was of blocks by chance with five treatments and four repetitions. It was used the following treatments: seeder equipped with one, two, three, four and five sowing lines, which were moved in an average speed of 5.5 km h-1. The parameters evaluated were: depth of the furrow, soil area mobilized, average traction force and maximum traction force. With the increase of the number of sowing lines of one for five, the average traction force in the bar increased from 3.7 to 8.6 kN, in other words, there was an increment of 131.9%.
seeder-drill; traction force; depth of the furrow
