Tolerância do milho ao herbicida Clethodim em aplicação de manejo

Abstract

The experiment was to evaluate the tolerance of corn (Zea mays) to clethodim herbicide When used in the bitter grass management operation before sowing of the crop. O trial was conducted in Rio Verde Foundation, Lucas do Rio Verde-MT. The experimental design was a randomized block in a factorial arrangement 6x6, Evaluating doses of 0.0; 0.5; 0.6; 0.8; 1.0; 1.2 l. ha-1 and application times at 15, 10, 7, 4, 2:00 (DAS days before sowing), with four repetitions. Were Seeds sown with a density of 4 plants per meter, 0:45 m spacing between rows, with 12.0 m² plots. This experiment was Evaluated agronomic traits such as height, stand and percentage of toxicity. The results Indicate que there is need for a minimum period of seven days between sowing and the application of clethodim herbicide.