Some herbicides are being currently developed for the control of aquatic weeds.The objective of this work was to evaluate the efficiency of Aurora 400 CE in aquatic environment for the post-emergence control of Eichhornia crassipes, Pistia stratiotes and Salvinia auriculata. The experiment was developed in boxes of water, from 22/07 to 20/09/2004, at NUPAM-FCA/UNESP, Botucatu, SP, Brazil. The experimental design was in randomized blocks with seven treatments and four repetitions, with the units consisting of boxes of water. The following treatments were used: control without herbicide; Aurora 400 CE (75, 150 and 300 mL ha-1); Roundup (3,0 L ha-1); Aurora 400 CE + Roundup (75 mL + 3,0 L ha-1) and Aurora 400 CE + Arsenal N.A. (75 mL + 2.0 L ha-1). It was observed that the treatment with Aurora 400 CE (300 mL ha-1) is highly efficient in the control of Pistia stratiotes; Roundup (3,0 L ha-1) is highly efficient in the control of Eichhornia crassipes; Aurora 400 CE + Roundup (75 mL + 3.0 L ha-1) is efficient in the control of E. crassipes, P. stratiotes and Salvinia auriculata and Aurora 400 CE + Arsenal (75 mL + 2.0 L ha-1) are efficient in the control of E. crassipes and P. stratiotes. The mixture Aurora 400 CE + Roundup (75 mL + 3.0 L ha-1) was viable and the only efficient treatment in the control of the three studied species.
weed; herbicide; Salvinia auriculata; Eichhornia crassipes; Pistia stratiotes
