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| Registros recuperados: 36 | |
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| Alister,Claudio; Araya,Manuel; Kogan,Marcelo. |
| Once pesticides reach the soil, there are several factors that affect their soil behavior. To identify the principal soil and herbicide properties that control their adsorption and leaching, a study of five Chilean agricultural and forest soils was performed. Simazine, diuron, terbuthylazine and MCPA were applied to the top of 45-cm tall by 12-cm diameter disturbed soil columns, filled with either an Andisol, Ultisol, Entisol or one of two Inceptisol soils. After herbicide applications, each lysimeter received 24 mm of simulated rain every 24 hours for five days. Once water percolation stopped, the lysimeters were divided into five sections and herbicide concentrations were quantified using High Pressure Liquid Chromatography. Relationships between soil... |
| Tipo: Journal article |
Palavras-chave: Diuron; Fulvic acids; Humic substances; MCPA; Triazines. |
| Ano: 2011 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202011000200010 |
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| Araldi,Rosilaine; Velini,Edivaldo Domingues; Gomes,Giovanna Larissa Gimenes Cotrick; Tropaldi,Leandro; Silva,Ilca Puertas de Freitas e; Carbonari,Caio Antonio. |
| The process of mechanical harvesting of sugarcane generates a large deposition of straw on the soil surface, providing a coverage that several studies have found important for reducing the weed population. Although such coverage reduces weed infestations, additional management, including chemical control, is still needed. Thus, this study aimed to evaluate the leaching of atrazine, pendimethalin, metribuzin, clomazone, diuron and hexazinone in sugarcane straw. The experiment was conducted at the School of Agronomic Engineering at UNESP (Sao Paulo State University) - Botucatu/SP. The sugarcane straw was collected in the field, cut and placed in quantities of 10t ha-1 in the capsules used as experimental units. The experimental design was completely... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atrazine; Pendimethalin; Metribuzin; Clomazone; Diuron; Hexazinone. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782015001202106 |
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| Rosado,Cecília Brustolini; Pereira,Gustavo Antônio Mendes; Capobiango,Nayara Pereira; Moreira,Renata Pereira Lopes; Freitas,Francisco Cláudio Lopes; Teixeira,Matheus Ferreira França; Silva,Antonio Alberto da. |
| ABSTRACT: The application of desiccant herbicides in the bean crop is fundamental in the production of quality seeds, since it anticipates the harvesting season, which makes it possible to obtain seeds in the period of physiological maturation, when they are reported with maximum accumulation of dry matter, high vigor levels and germination percentage. However, there is little information about the ideal application time of these products to obtain beans of high physiological quality. Therefore, the objective of this study was to evaluate the physiological quality of bean seeds after application of desiccant herbicides at different times in preharvest. The experimental design was a randomized complete block design in a 2x3+1 factorial scheme, with four... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diuron; Paraquat; Phaseolus vulgaris; Vigor. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000900201 |
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| PESSOA, M. C. P. Y.; GOMES, M. A. F.; SOUZA, M. D. de; CERDEIRA, A. L.; NEVES, M. C.; NICOLELLA, G.. |
| Este trabalho teve por objetivo um estudo de simulação, utilizando o CMLS-94, em área de agricultura intensiva de cana-de-açúcar, localizada na microbacia do córrego Espraiado em Ribeirão Preto (SP), de importância internacional, dada a presença do Aquífero Botucatu (Guarani). Os dados referentes a cultura de cana-de-açúcar tipo soqueira, predominante na área, aos principais tipos de solo na área estudada, quais sejam Latossolo Roxo (LR), Latossolo Vermelho-Escuro (LE) e Areia Quartzosa (AQ), foram incorporados as bases de dados do CMLS-94, assim como a informação do nome do arquivo contendo dados climáticos diários de Ribeirão Preto (SP) (período 1986-1989). Os herbicidas utilizados foram atrazina, tebuthiuron e diuron, por serem os mais usados na área de... |
| Tipo: Folhetos |
Palavras-chave: Agricultura intensiva; Águas subetrrâneas; Lençoal freático; Herbicida; Simulação; Qualidade da água; Agrotóxico; Solo; Contaminação; Cana de açúcar; Atrazina; Herbicides; Environmental fate; Simulation models; Diuron; Tebuthiuron. |
| Ano: 1999 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/13121 |
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| AZEVEDO, D. M. P de. |
| Plantas daninhas: conceito, características, impacto, classificação, reprodução, disseminação, competição, manejo, prevenção, erradicação, controle; Alachlor; Trifluralin; Amônio glufosinato; Clethodim; Clomazone; Cynazine; Diuron; Paraquat; Fluazifop; Linuron; Msma; Norflurazon; Oxadiazon; Oxyfluorfen; Pendimethalin; Propaquizafop. |
| Tipo: Folhetos |
Palavras-chave: Plantas daninhas: conceito; Características; Impacto; Classificação; Disseminação; Competição; Prevenção; Controle; Amônio glufosinato; Cynazine; Msma; Erradicação; Manejo; Paraquat; Reprodução; Alachlor; Diuron; Clomazone; Fluazifop; Clethodim; Linuron; Pendimethalin; Propaquizafop; Norflurazon; Oxadiazon; Oxyfluorfen; Trifluralin. |
| Ano: 2002 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/275893 |
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| Guerit, Isabelle; Bocquene, Gilles; James, Alice; Thybaud, E; Minier, C. |
| The aim of this study was to test field relevance of the prospective methodology for the assessment of environmental risk described in the EU technical guidance document (TGD) [European Commission 2003. Technical guidance document in support of Commission Directive 93/67/EEC on Risk assessment for new notified substances and Commission Regulation (EC) No 1488/94 on Risk assessment for existing substances and Commission Directive (EC) 98/8 on biocides, second ed. European Commission, Luxembourg, Part 1, 2 and 3, 760pp.]. To achieve this goal, an environmental risk assessment was performed according to the TGD for two major contaminants, atrazine and diuron, that are present in the Seine River estuary (France) and listed in the EU Water Framework Directive... |
| Tipo: Text |
Palavras-chave: Diuron; Atrazine; Estuaries; The Seine River; Technical guidance document; Chemical risk assessment. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4540.pdf |
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| Stachowski-haberkorn, Sabine; Jerome, Marc; Rouxel, Julien; Khelifi, Celia; Rince, Maeva; Burgeot, Thierry. |
| To investigate the ability of microalgae to develop stable, long-term resistance to herbicides, the marine microalga Tetraselmis suecica was exposed to the herbicide diuron (5 µg/L) for a 43-generation exposure period followed by a 12-generation depuration phase. During the first 25 generations, diuron-exposed cultures showed doubling times ranging from 1.95 to 2.6 days, which was 2 to 2.5-fold longer than control cultures. Between generations 25 and 38, during diuron exposure, two out of the three exposed cultures exhibited a spontaneous drop in doubling time. These results provided evidence of culture adaptation to diuron. To assess persistence of the diuron adaptation observed on growth performance, one of the adapted cultures (D3) was maintained for 12... |
| Tipo: Text |
Palavras-chave: Microalgae; Diuron; Multigenerational; Adaptation; Flow cytometry. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00146/25718/23796.pdf |
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| Barranger, Audrey; Akcha, Farida; Rouxel, Julien; Brizard, Raphael; Maurouard, Elise; Pallud, Marie; Menard, Dominique; Tapie, N.; Budzinski, Helene; Burgeot, Thierry; Benabdelmouna, Abdellah. |
| Pesticides represent a major proportion of the chemical pollutants detected in French coastal waters and hence a significant environmental risk with regards to marine organisms. Commercially-raised bivalves are particularly exposed to pollutants, among them pesticides, as shellfish farming zones are subject to considerable pressure from agricultural activities on the mainland. The aims of this study were to determine (1) the genotoxic effects of diuron exposure on oyster genitors and (2) the possible transmission of damaged DNA to offspring and its repercussions on oyster fitness. To investigate these points, oysters were exposed to concentrations of diuron close to those detected in the Marennes-Oleron Basin (two 7-day exposure pulses at 0.4 and 0.6 μg... |
| Tipo: Text |
Palavras-chave: Herbicide; Diuron; Oyster; Genotoxicity; Comet assay; Cytogenetics. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00162/27311/25541.pdf |
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| Barranger, Audrey; Benabdelmouna, Abdellah; Degremont, Lionel; Burgeot, Thierry; Akcha, Farida. |
| Changes in normal chromosome numbers (i.e. aneuploidy) due to abnormal chromosome segregation may arise either spontaneously or as a result of chemical/radiation exposure, particularly during cell division. Coastal ecosystems are continuously subjected to various contaminants originating from urban, industrial and agricultural activities. Genotoxicity is common to several families of major environmental pollutants, including pesticides, which therefore represent a potential important environmental hazard for marine organisms. A previous study demonstrated the vertical transmission of DNA damage by subjecting oyster genitors to short-term exposure to the herbicide diuron at environmental concentrations during gametogenesis. In this paper, Fluorescent in... |
| Tipo: Text |
Palavras-chave: Aneuploidy; FISH; Diuron; Crassostrea gigas. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00238/34911/33216.pdf |
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| Dupraz, Valentin; Coquille, Nathalie; Menard, Dominique; Sussarellu, Rossana; Haugarreau, Larissa; Stachowski-haberkorn, Sabine. |
| A wild strain of Chaetoceros calcitrans and wild and diuron-resistant strains of Tetraselmis suecica, were exposed to the PSII inhibitor herbicides diuron and irgarol, individually and in mixtures. The effects of three concentrations of diuron and irgarol and four binary mixtures were evaluated on doubling time, relative reactive oxygen species and lipid content by flow cytometry, and on photosynthetic efficiency by pulse amplitude modulated fluorescence. In both wild strains, significant effects were observed for each molecule at the highest concentration tested: at irgarol 0.5 μg L−1, C. calcitrans was shown to be more sensitive than T. suecica (+52% and +19% in doubling time, respectively), whereas at diuron 5 μg L−1, T. suecica was more affected... |
| Tipo: Text |
Palavras-chave: Microalgae; Herbicides; Antifouling; Irgarol; Diuron; Diuron resistance. |
| Ano: 2016 |
URL: http://archimer.ifremer.fr/doc/00319/43047/42658.pdf |
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| Legrand, Helene; Herlory, Olivier; Guarini, Jean-marc; Blanchard, Gerard; Richard, Pierre. |
| Atrazine and diuron are two herbicides present in sediments of the intertidal mudflats in the Pertuis Charentais (Atlantic coast, France). They may negatively affect photosynthesis processes in microphytobenthos, the most productive primary producer in these environments. The impact of these herbicides on benthic diatoms was investigated using PAM fluorimetry on natural microalgal communities, once extracted from sediment, by following the variations of the effective quantum yield of PSII (Phi(PSII)) during exposure to atrazine and diuron concentrations in a range 0.1 mu g L-1 (.) 10 mg L-1. No significant effect was noticed for 0.1 mu g L-1 concentrations, but progressive reduction in photosynthetic efficiency, always occurring within 15 min, was... |
| Tipo: Text |
Palavras-chave: Diuron; Atrazine; PAM; Chlorophyll fluorescence; Microphytobenthos. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/publication-3614.pdf |
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| Akcha, Farida; Spagnol, Charlene; Rouxel, Julien. |
| We investigated the effects of genotoxicant exposure in gametes and embryos to find a possible link between genotoxicity and reproduction/developmental impairment, and explore the impact of chemical genotoxicity on population dynamics. Our study focused on the genotoxic effects of two herbicides on oyster gametes and embryos: glyphosate (both as an active substance and in the Roundup formulation) and diuron. France is Europe's leading consumer of agrochemical substances and as such, contamination of France's coastal waters by pesticides is a major concern. Glyphosate and diuron are among the most frequently detected herbicides in oyster production areas; as oyster is a specie with external reproduction, its gametes and embryos are in direct contact with... |
| Tipo: Text |
Palavras-chave: Genotoxicity; Embryotoxicity; Oyster; Gametes; Pesticides; Diuron; Glyphosate. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00070/18128/15783.pdf |
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| Dupraz, Valentin; Stachowski-haberkorn, Sabine; Menard, Dominique; Limon, Gwendolina; Akcha, Farida; Budzinski, Helene; Cedergreen, Nina. |
| The toxicity of the antifouling compounds diuron, irgarol, zinc pyrithione (ZnPT), copper pyrithione (CuPT) and copper was tested on the three marine microalgae Tisochrysis lutea, Skeletonema marinoi and Tetraselmis suecica. Toxicity tests based on the inhibition of growth rate after 96-h exposure were run using microplates. Chemical analyses were performed to validate the exposure concentrations and the stability of the compounds under test conditions. Single chemicals exhibited varying toxicity depending on the species, irgarol being the most toxic chemical and Cu the least toxic. Selected binary mixtures were tested and the resulting interactions were analyzed using two distinct concentration-response surface models: one using the concentration addition... |
| Tipo: Text |
Palavras-chave: Diuron; Irgarol; Pyrithione; Copper; Microbial ecotoxicology; Mixture model. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00445/55695/57362.pdf |
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| Registros recuperados: 36 | |
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