ECONOMIC EVALUATION AND EFFECTIVENESS OF HERBICIDES APPLIED IN PRE-EMERGENCY IN THE SESAME1

ABSTRACT The sesame crop has great economic potential due to the various possibilities of exploitation, however, there is a lack information about chemical control weeds in crop, mainly application herbicides pre-emergence. Therefore, objective this study was evaluate viability and efficacy applied pre-emergence for crop. experimental design randomized blocks, with four replications. treatments consisted seven (diuron, flumioxazin, oxadiazon, oxyfluorfen, metribuzin, linuron, S-metolachlor) mixture (metribuzin + oxyfluorfen) two were weeded nonweeded plots. variables evaluated percentage weed community, grain yield, gross net income, rate return, profitability index. highest productivity value weeding, followed by diuron 2,000.44 kg ha-1, 1,957.35 ha-1;, 1,933.13 respectively. flumioxazin obtained amounts R$ 7,831.26 7,762.85, showed more than 80% showing efficiency control. use weeds, as efficient mechanical control, demonstrating relation which presents high cost/benefit ratio.