2017-11-142017-11-141999-12ALMEIDA, Rogério de Araújo; SILVA, José Geraldo da. Desempenho operacional de uma semeadora-adubadora à tração animal, com diferentes sistemas de sulcadores, regulagens de disco de corte e coberturas mortas, no plantio direto do feijoeiro (Phaseolus vulgaris L.). Pesquisa Agropecuária Tropical, Goiânia, v. 29, n. 2, p. 73-80, jul./dez. 1999. Disponível em: <https://www.revistas.ufg.br/pat/article/view/2853/2903>.1517-6398http://repositorio.bc.ufg.br/handle/ri/12844ln an essay, carried out in 1998, the performance of an animal traction planter for direct drilling of black beans (Phaseolus vulgaris L) was evaluated. The experiment was carried out in a distrofic dark red oxisol in the experimental fields of the Agronomy School ofthe Federal University of the State of Goiás, Brazil. Two leveis of mulching, three soil opener sytems, and two coulter settings were compared. Double disc opener reduced soil disturbance, required less power traction and energy.porAcesso AbertoPlantio diretoTração animalSemeadoraZero tillageAnimal tractionPlanter machineArtigo