The objective of this work was to evaluate the arrangements of weed sowing and management for the implantation of Brachiaria brizantha pastures in consortium with corn for silage under no-tillage system. The treatments consisted of five sowing arrangements (corn alone; B. brizantha alone; two lines of B. brizantha in between lines of corn, simultaneously planted; B. brizantha planted by throwing the day corn was sown and 30 days after), two weed managements (1.50 kg ha-1 of atrazine applied alone and the combination of 1.50 kg ha-1 atrazine with 4.00 g ha-1 nicosulfuron), besides four controls (corn alone and B. brizantha with and without weeding), arranged in a randomized complete block design, in a split plot, with four repetitions. Herbicide application was performed 18 days after corn emergence. Thirty days after herbicide application and corn harvest for silage, dry biomass of weeds and B. brizantha were estimated. Sixty days after harvest, a new estimate of dry biomass of B. brizantha was conducted. Weed infestation was low and corn production for silage was not affected by B. brizantha, either by the sowing arrangements or weed managements. Two B. brizantha lines in between lines of corn, simultaneously planted, promoted the highest forage dry biomass of B. brizantha.
consortium; sowing arrangement; competition; cultural management
