The objective of this work was to evaluate the efficacy of different combinations of integrated herbicide treatments, applied at PPI, pre, post, mechanical cultivation and direct spray on cotton crop (Gossypium hirsutum). The trial was conducted in the field, being cotton crop cultivar IAC-20 the experiment area. The treatments were tested with the following products: trifluralina at the dose of 1.068 kg a.i./ha; alachlor at the dose of 1.584 kg a.i/ha; M.S.M.A. at the doses of 1.44 and 1.68 kg a.i./ha; nicosulfuron at the doses of 0.0201; 0.030 and 0.040 kg a.i./ha; diuron at the doses of 1.0 and 1.5 kg a.i./ha; lactofen at the dose of 0,18 kg a.i./ha; cyanazine at the doses of 1.0 and 1.5 kg a.i./ha and diuron at the doses of 1.0 and 1.5 kg a.i./ha. The herbicide treatments were conducted at incorpored pre-planting (IPP), preemergence (PRE), postemergence (POS); mechanical cultivation (MC) and directed spray (DS).The results lead to the conclusion that the system trifluralina (IPP), alachlor(PRE), MC, M.S.M.A. + lactofen presented the highest yielding.The herbicide systems with the application of trifluralina (IPP), alachlor (PRE), M.S.M.A. (POS), MC approximately 50 to 60 D.A.P. and the application through direct spray of diuron, lactofen + cyanazine, lactofen + diuron, M.S.M.A. + cyanazine, M.S.M.A. + lactofen and M.S.M.A. + diuron, in general, promoted the control of weeds.
Gossypium hirsutum; herbicides; control; phytotoxicity