TO STUDIES THE EFFECT OF NEW PER EMERGENCE AND POST EMERGENCE HERBICIDES AGAINST CITRUS WEEDS AN EXPERIMENT WAS CARRIED OUT AS A COMPLECTELY RONDOMIZED BLOCK DESIGNED WITH 3 REP AND 13 TREATMENTS. TREATMENTS WERE PRE EMERGENCE HERBICIDES DEVRINOL IN 10, 8 AND 6 LIT/HA, TREFOLARIN IN 2.5 LIT/HA AND POST EMERGENCE HERBICIDES WEED MASTER IN 1, 1.5 LIT/HA, ILLICO IN 12, 10, 8 AND 6 LIT/HA, GLYFOSIT 1.5 LIT/HA, PARAQUAT IN 3 LIT/HA AND CONTROL WITHOUT HERBICIDES. AFTER HERBICIDE APPLICATION, WEED NUMBERS DECREASED BUT DRY WEIGHT DECREASING PERCENT INCREASED SIGNIFICANTLY IN COMPRISION WEEDS CHEK. ILLICO IN 10 AND 12 LIT/HA HAD THE HIGHEST AND TRIFOLARIN HAD THE LOWEST EFFECT IN WEED CONTROL.