Volatilization plays an important role in the process of herbicide dispersion in the environment. The physicochemical characteristics of the clomazone molecule indicate its volatility potential. The present study aimed to evaluate the volatilization rate of three clomazone formulations under field conditions using indicator plants and wind tunnels. Transparent polyethylene tunnels were placed on a sorghum (Sorghum bicolor) field parallel to the prevalent wind direction, and the herbicide formulations were applied in plastic trays containing 10 kg of sieved soil and […]

The cultivation of beets is frequently done in a crop rotation system with cereals such as corn. In this case, herbicides with residual effect applied during corn growth can harm the establishment and growth of beets grown in succession. Therefore, three experiments were carried out in a greenhouse to evaluate the residual effect of atrazine and tembotrione, in isolation or in a mixture, on the initial growth of beets. The treatments consisted of six dosages corresponding to 0, 10, 20, […]

Herbicides that present long persistence in the soil can cause problems in crops sown in succession due to the soil’s residual effect. That way, the objective of this paper was to evaluate the effects of herbicides applied in the pre-emergence of the cotton to the productivity of corn grown in succession. The experiment was installed in the municipality of Santa Helena de Goiás – GO. The application of herbicides treatments were carried out in a pre-emergence state of the cotton […]

Metribuzin is an herbicide widely used in the control of weeds in crops such as soybean, potato and tomato. However, there is suspicion of intoxication in crops cultivated in succession due to the residual effect of the product in the soil. As such, our goal was to evaluate the residual effect of metribuzin in the soil on the growth of garlic, onion and beans plants. Three experiments were conducted in a greenhouse, in a randomized block design, with four replications. Each experiment […]

We aimed with this work to evaluate the effects of herbicides on microbial activity of soils planted with sugarcane.  The experiment was installed in a randomized blocks design in a factorial scheme 5 x 4 with four replications. Factor A was composed by sugarcane genotypes (RB72454, RB835486, RB855113, RB867515 and RB947520) and B corresponded to the herbicides (ametryn, trifloxysulfuron-sodium and the formulated mixture ametryn + trifloxysulfuron-sodium), and a no herbicide control. At 15 and 45 days after herbicide application (DAT), […]

Herbicides applied in previous crop may present residual effects, causing injuries in the crop in succession. Furthermore, it essential the research of tolerant crops to possible residual effects which is denominated like carryover. The objective of this research was to evaluate the carryover effects of the herbicide associations adopted in the desiccation for the soybean cultivate, in Crambe abyssinica FMS-Brilhante cultivar, grown in succession. The experiment was established and conducted in a completely randomized experimental design, with eight treatments and […]

Maintenance of mulch on the soil surface can reduce the potential for weed infestations, and may affect transposition of the herbicides, the dynamics of wetting and washing the straw by rainwater. The study had as objectives evaluate the dynamics of the herbicides diuron, tebuthiuron and metribuzin in different water regimes with and without straw, and point out the main relationships between the presence or absence of straw removal of herbicides by rainwater and influence on the effectiveness of weed control. […]

The objective of this research was to evaluate contrasting textures soils (clay and loamy sand) in the leaching of diuron + hexazinone + sulfometuron-methyl (1386.9 + 391 + 33.35 g ha-1) commercial formulation, and also hexazinone (391 g ha-1), diuron (1386.9 g ha-1) and sulfometuron-methyl (33.35 g ha-1), in soil columns mounted in PVC pipes. One day after the herbicide application, half of the columns received 40 mm of simulated rainfall and Ipomoea triloba weed was sown. At 21 and […]

The objective of this work was to select appropriate bioindicators for monitoring the mobility in soil and persistence of amicarbazone, ametryne, diuron and clomazone herbicides. The experiments were conducted in greenhouse conditions, in polyethylene pots of 250 cm3 with dystroferric Red Latosol. In each experiment, it was used one herbicide (amicarbazone, ametryn, diuron or clomazone) and three bioindicators (10 seeds of each specie), distributed in randomized blocks design in a factorial scheme 5 x 3, with three replications. Studied factors […]

The aim of this work was to determine residual activity of ACCase inhibitor herbicides applied at pre-sowing of corn crop. The experimental design was completely randomized blocks with four replications in a split-plot scheme, where the factor time interval (seven and two days prior to corn sowing) was the plot and herbicide treatments were the sub-plot: 1. check without application; 2. tepraloxydim (80 g ha-1); 3. tepraloxydim (100 g ha-1); 4. clethodim (72 g ha-1); 5. clethodim (96 g ha-1); […]