Millet is an annual hot season grass that has an upright and tall size, used as a food source in livestock and as a soil cover in the no-tillage system. As it is a culture of low economic value, information about it is rare. The objective of the work was to verify the selectivity of the herbicides atrazine and 2,4-D applied alone or in association at different times in the millet culture. The experiment was carried out in the field […]

The application of plant regulators reduces plant height without affecting the high quality of the treated area, without causing damage to the density of plants and without causing visible damage to the lawn. Thus, the objective was to evaluate the use of the herbicide fluazifop-p-butyl as a growth regulator for three species of grasses (bahia grass – Paspalum notatum; emerald – Zoysia japonica and blanket grass – Axonopus compressus) depending on the luminosity. The work was carried out in a […]

The control of weeds in pastures is essential to improve the productivity indexes of agricultural activity and the correct and conscious use of herbicides is very important to reduce the problems caused by the residual effect in subsequent culture. Thus, this study evaluated the residual effect of the auxinic herbicides 2,4-D, picloram and 2,4-D + picloram on the initial development of soybean seedlings. The work was carried out in a greenhouse in a completely randomized design, in a 7 x […]

The control of weedy rice has been widely studied in weed science. However, gene flow from Clearfield rice (CL) to weedy rice has damaged the efficiency of the CL production system. A new rice crop that is resistant to ACCase inhibitor herbicides will be launched in the next year on the market, representing another tool for managing weedy rice in irrigated rice crops. In addition to using this tool, there is a need to increase the spectrum of herbicide treatments […]

The use of plant regulators and foliar fertilizers in crops has increased due to the benefits provided in plant nutrition and in tolerance to environmental stresses. The objective of this research was to evaluate the effects of plant regulator and foliar fertilizer in reducing injuries caused by the herbicide 2,4-D in two soybean varieties (M7110 IPRO and M7739 IPRO). Four experiments were conducted in randomized block design with four replications. In each experiment, ten treatments were used: single application of […]

Nitrogen is the most extracted nutrient in carrot fields. However, high N doses can favor thegrowth of aerial part in relation to the root of the plant. The application of metribuzin canalter the biomass partition in favor of the roots. Thus, the objective of this research was toevaluate the effect of post-emergence metribuzin application and its interaction withnitrogen on the axial and radial growth and yield of carrot roots. Three field experimentswere carried out in different growing sites. Experimental design […]

The objective of this work was to evaluate the effect of biochar on the sensitivity of presprouted seedlings (MPB) of sugarcane to the clomazone, imazapic and indaziflam appliedin pre-planting alone or in combination. Two varieties of sugarcane (RB 975952 and RB985476) were evaluated. The experimental design was completely randomized with 4replications, using a 9 x 2 factorial scheme, with nine treatments (imazapic 52.5 and 200 gia ha-1, clomazone 1000 g ia ha-1, indaziflam 100 g i.a. ha-1, associations of imazapic […]

Some substances can be used as chemical protectors to increase the tolerance of crops to herbicides, including some micronutrients such as selenium. The use of herbicides in pastures has been increasingly used for weed management, this work aimed to evaluate selenium as a chemical protector in the selectivity of herbicides applied in post-emergence in U. decumbens. Three experiments were carried out in a greenhouse, in a 5×2 factorial scheme, five doses of herbicides and in the presence or not of […]

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 […]