Glyphosate doses in the suppression of Megathyrsus maximus cv. BRS Quênia intercropped with transgenic maize

ABSTRACT In the intercropping of maize with Megathyrsus maximus, application herbicides is a technique that can be used to reduce competition between intercrops. This study aimed evaluate effect different glyphosate doses on suppressing growth maximus cv. BRS Quênia intercropped maize, as well in weed control. The randomized block experimental design was and conducted field. treatments consisted six doses, 0; 48; 96; 240; 480; 960 g acid equivalent [a.e.] ha-1, treatment without forage ha-1. dose 260.87 a.e. ha-1 provides 50% response production variable; therefore, it has potential suppress M. Quênia. presence reduces density dry mass weeds, species community: Ricinus communis, Eleusine indica, Alternanthera tenella, Commelina benghalensis, Conyza sp., Digitaria horizontalis.