The use of herbicides must be made in a rational way, giving priority to reduce possible adverse effects on subsequent crops. The objective was to evaluate the residual effect of pre-emergent herbicides on growth and initial development as well as the biochemical composition of snap bean seedlings. The experimental design used was the completely randomized, with four replications in factorial scheme 3×4, three snap bean cultivars (Macarrão Favorito, Macarrão Preferido e Macarrão Trepador) and three pre-emergent herbicides, plus a control […]

The use of chemical ripeners is a reality in the sugarcane sector. The objective of this work was to evaluate the technological and productive parameters of sugarcane when submitted to the application of chemical ripeners in the beginning of the harvest. The experimental design used was in randomized blocks arranged in split plots with four repetitions. The main plots consisted of the application of the following products with their respective dosages: control – without application; sulfometuron-methyl 0.02 kg ha-1 + […]

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 […]

Successive and arbitrary application of glyphosate may cause cases of intoxication in humans by indirect ingestion, since transgenic soybeans present levels above the permitted for this herbicide. The objective of this study was to evaluate the glyphosate and aminomethyl phosphonic acid (AMPA) levels in genetically modified soybeans tolerant to glyphosate. The chosen experimental design was composed by random blocks of eight treatments and four replications. Treatments consisted in glyphosate, applied only once and singly in doses of 720 and 960 […]

With the increase in the demand for renewable fuels, the sugarcane industry must seek a way of increasing agro-industrial productivity while reducing production costs. Currently, there are few reports on the use of plant growth regulators in saccharine sorghum crops. The objective of this study was to evaluate the effects of the application of chemical ripening agents on the technological quality and the morphological and anatomical aspects of saccharine sorghum. The experiment was conducted at the Cerradinho Mill in Catanduva, […]

The use of herbicides is essential for the control of weeds and increase crop productivity, but these products can affect the physiology and growth of non-target organisms, including native plants. The objective of this research was to evaluate in the heated greenhouse the gas exchange, fluorescence of chlorophyll a and chloroplastid pigment content of pequi plants (Caryocar brasiliense) submitted to simulated drift of glyphosate. The treatments were arranged in a randomized block. Seven doses of glyphosate were tested: 0 (control), […]

The goal of this work was to evaluate the sulfentrazone effects on the characteristics associated with photosynthetic activity of Helianthus annus, Canavalia ensiformis, Dolichos lab lab and Arachis hypogaea regarded species with potential of remediation of contaminated soil with this herbicide. The experiment was conducted in factorial 4 x 3, completely randomized design, with four replications. The first factor consisted by cultivation of species H. annus, C. ensiformis, D. lab lab and A. hypogaea; the second factor by three sulfentrazone […]

The aim of this study was to evaluate the residual effects regarding the maturing on morphoanatomic characteristics relating the sugarcane’s leaves. The experimental design was a randomized block in a split plot. The plots were constituted by the following varieties of sugarcane (SP80-3280 and SP80-1842) and the subplots of different maturings: Curavial 20 g bw ha-1 (sulfomethuron-methyl); Curavial 20g bw ha-1 + Roundup 0.15 L ha-1 (sulfomethuron-methyl + glyphosate); Ethrel 0.67 L ha-1 (etephon); Ethrel 0.67 L ha-1 + Roundup […]

Plant remediation has been reported as a promising technique for decontaminating soil herbicide residues. For hormonal herbicides there is difficulty in determining waste by bioassay technique due to the variation in growth in response presented by the indicator plant. The objective of this study was to evaluate the effect of doses of picloram through physiological characteristics of the bean in phytoremdiation soils with braquiaria. The experiment was arranged in greenhouse in the design of randomized blocks. Applied increasing doses of […]

In order to increase productivity levels, reduce costs and improve efficiency in mechanical harvesting, new technologies are being incorporated such as governor use of growth and application of sub-dose of glyphosate with promising hormetic effect on cotton plants. To do this, this study aims to evaluate the effect of the application of sub-dose of glyphosate and growth regulator system on cotton agronomic characteristics. The experimental design was randomized blocks in a factorial 6 x 2 + 1, with four replications, […]