Biotech soybeans called Roundup Ready (RR) are tolerant to the lethal effects of glyphosate herbicides, so traditional desiccation options are not sufficient to manage these plants. The objective of this study was to evaluate the efficacy of herbicide interaction in the control of RR soybean plants and the selectivity in the maize crop. The experiment was conducted in a completely randomized design, in a greenhouse with soybean (RR) and corn plants. The treatments consisted of the combination of the herbicides […]

There is an outstanding difference among cotton cultivar related to injury caused by herbicides applied in preemergence. This way, the present work was conduct in greenhouse with the objective to evaluate the effect of crescent doses to fomesafen about the initial growth to eight cotton cultivars. The experimental design utilized was the completely randomized, arranged in factorial design 8 x 6, with five replications. Evaluate the response of eight cotton cultivars (DP 555 BG RR, FMT 705, FMT 701, FM […]

Cyperus iria L. (CYPIR) is one of the main cyperaceae occurring in irrigated rice crop. For many years, acetolactate synthase inhibitor herbicides (ALS) were the main tool to control CYPIR, favoring the selection of cross-resistance biotypes. Based on the level of resistance, it is necessary to adopt alternative chemical control measures in order to avoid the evolution of the resistance and to reduce the interference on the crop. The aim of this work was to evaluate alternatives of chemical control […]

The long-lasting residual effect of herbicides depends on the soil and molecule characteristics; however, the bioactivity of the herbicide can cause damage to the crop in rotation/succession. The most common way to identify the presence of herbicides in the soil is by the implantation of bioassays that uses a susceptible species to herbicidal molecules as an indicator of residues. The aim was to identify the sensitivity of watermelon as bioindicator to the pre-emergence herbicide residue used in soybean cultivation. The […]

One of the methods, efficient and low cost, to estimate the presence of herbicides in the soil is the biological. However, before using this method it is necessary to identify species that have high sensitivity to the herbicide under controlled conditions. This research aimed to select species that show high sensitivity to saflufenacil for later studies of the dynamics of this herbicide in soil. The sensitivity of seven plants species to saflufenacil (Curcubita pepo, Beta vulgaris, Daucus carota, Citrullus lanatus, […]

The indaziflam herbicide presents residual activity in the soil and may become a problem for agricultural crops, due to the possibility of carryover in successor crops. Thus, the objective was to select potential bioindicator species for the presence of indaziflam residues in the soil. Two experiments were carried out in a greenhouse using 0.000250 m3, both distributed in a randomized complete block design with four replicates. In the first experiment, eleven species with potential use as bioindicators were used: rice, […]