Saflufenacil herbicide can be one more alternative to control aquatic environment weeds, but at the time of or after the application of the herbicide bad weather such as rain, may invalidate the chemical control of problematic species occurring in this environment. Thus, the goal of this study was to evaluate the occurrence of different rain periods after applying saflufenacil herbicide to control water hyacinth and water lettuce plants. The study was conducted in plastic pots with 2.5 water liter capacity […]

The presence of yellow bells (Tecoma stans) in pastures can compromise the implantation and the development of forage, damaging animal production and hindering mechanized operations with trailing implements. The objective of this paper was to evaluate the yellow bells control after localized herbicides applications and the fitointoxication of pasture composed of Urochloa maxima (syn Panicum maximum). The treatments were triclopyr (4%) and triclopyr (3%) applied to the stump base (SB); picloram (2%) applied on stump after plants (SA); triclopyr + […]

The objective of this research was to evaluate the efficacy of glyphosate in desiccating Urochloa ruziziensis, U. decumbens, and U. brizantha cv. Piatã at two levels of biomass for no-till establishment in Cerrado areas. The experimental design was a randomized complete block design with four replications, in a split-plot system. Plots consisted of two levels of biomass and sub-plots consisted of four doses of Roundup Ultra® – glyphosate at 0.65; 1.30, 1.95 and 2.60 kg ha-1 acid equivalent. The application […]

The grown of RR® soybean preceded by corn RR® increased the occurrence of volunteer corn plants interfering with soybeans. The volunteers originate from the grain lost during harvest corn. Losses occur as individual grains, which give rise to individual plants, and in the form of ear corn or pieces containing various grains, which give rise to the clumps. The volunteer corn if not controlled interfere with soybean and reduces significantly the yield, even in a population less than a plant […]

The permanence of straw on the ground changes the phytosociology of weeds and affects control by the difficulty of transposing from straw to soil; thus, it is extremely important to transport it as quickly as possible. This research had the goal to know the effectiveness of two herbicides, applied on straw in different periods without rain, in controlling three weed species from the Euphorbia genus. The experiments were conducted in a greenhouse using a completely randomized design, arranged in split-plot […]

Sugarcane has great economic importance in Brazil. In order to maintain its yield, several biotic and abiotic factors can have a positive or negative influence. Among them, it is possible to mention weeds, nematodes and the synergistic action among pesticides in order to control both. Thus, the present work had the objective to study the interaction between herbicides and nematicides used in sugarcane crop. The experimental design was completely randomized, in a 5 x 3 factor scheme, with four replications. […]

The use of herbicides in pre-emergence of the soybean crop is a great tool for weed management. However, it is important to know the effects of herbicides in order to avoid a decrease in productivity. The objective of this study was to evaluate the sensitivity of three soybean cultivars submitted to pre-emergence application of diclosulam in clayey soils and average. The experiments were conducted in a greenhouse in randomized complete block design with four replications in a 6×2 factorial, where […]

The sorghum biomass is an alternative to a renewable energy generation by burning it in boilers, it stands out for its high productivity that occurs fully mechanized way. A common alternative to reduce the crop moisture is the application of herbicides. However, there is no researches showing the moisture reduction with burndown applications. Thus, this work aimed to evaluate the glyphosate application in drying of sorghum biomass. The experimental design was completely randomized in a factorial 2x5x4 consisting of: two […]

Organic matter exerts an influence on the chemical, physical, and biological properties of soil. It can also influence the rates of herbicide degradation and sorption into it. This study aimed at evaluating the effect of adding organic compounds to soil over the remediation ability of the plant species Canavalia ensiformis (L.) (jack bean) in sulfentrazone-contaminated soil. The study was conducted in two phases. In the first phase, treatments consisted in a combination of four concentrations of organic compounds and in […]

Herbicides applications are usually held with specific environmental conditions that may influence the efficacy of these products. This research was conducted to evaluate the influence of application times of glyphosate and glyphosate + 2.4-D herbicides in Polygonum convolvulus weed control. The experiment was developed with vases arranged in field conditions. The treatments were constituted by glyphosate (960 g ha-1) and glyphosate + 2.4-D (960 + 335 g ha-1) herbicides, both applied in 25 and 9/26/2015, in 10:00 PM hour, 03:00 […]