To study the efficiency of the chemical method for red rice control three field experi ments were carried out at Low Itajai Valley in the years 1978 and 1980. The herbicides 2,4-D amine, benthiocarb, oxadiazon, metolachlor, and alachlor were applied on submerged fields, 13 to 15 days before the seeding of the cultivated rice. The control cf red rice was over 75 % and total for the other common weeds with the herbicides. None of the herbicides caused any damage to the cultivated rice. The yields for rice were depending on the level of red rice and other weeds infestation.
red rice; submerged soil preparation; chemical control