Selectivity of herbicides applied in pre and post transplant of pre-sprouted seedlings of sugarcaneThe use of pre-sprouted seedlings (PSS) of sugarcane in the sugarcane's system has grown immensely in recent years.However, lack of information on herbicide management in the system may compromise the technology.In order to better understand the effects caused by different herbicides applied in pre and post-transplantation of sugarcane MPBs variety CTC4, this study was conducted in two stages under different conditions.The treatments were defined based on the herbicides most common in the industry.Both experiments were conducted at the FMC research center in Paulínia (SP), where effects such as phytotoxicity, height, yield, number of tillers, number of stems and germination were evaluated.For the field experiment, it was observed that in spite of initial insults caused by several herbicides, only sulfentrazone promoted a reduction of productivity, however all treatments at 60 days after application did not present phytotoxicity symptoms.From this first study, another experiment was carried out in a greenhouse, trying to analyze the same herbicides in different application positions and in two types of soil.When positioned in pretransplantation the symptoms of injuries were higher, compromising the development of some treatment.In this case, diclosulam showed to be the least selective independent of the type of soil studied, followed by clomazone.However, the literature shows that selectivity results vary according to the conditions employed and mainly the crop varieties, thus, repetitions of this study should be performed to enable better understanding and validation of the data.