Consulta: subjectFacets:"Atrazine"
Registros recuperados: 51
Data/hora: 03/06/2024 02:31:48

Uso de herbicidas em viveiro de seringueira em Ouro Preto do Oeste, RO.
Provedor de dados: 14
Autores: AZEVEDO, D. M. P. de; ROMAN, E. S.; LISBOA, S. de M.
Este trabalho tem por objetivo testar a eficácia de cinco herbicidas pré-emergentes, no controle de plantas dainhas em viveiros de seringueira, nas condições edafoclimáticasde Ouro Preto do Oeste, RO.
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Erva Daninha; Enxerto; Herbicida; Hevea; Metribuzin; Seringueira; Viveiro.; Atrazine; Diuron; Simazine.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/700000

Atrazine (a short review of literature).
Provedor de dados: 14
Autores: AGUIAR, P. A. A.
The triazines constitute a large family of herbicides. Various substitutions on the triazine basic structure yield compounds of widely different chemical and biological properties.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Uso; Herbicida; Nomenclatura; Atrazine.
Ano: 1975
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/128729

Prevenção e controle da tiririca em áreas cultivadas com hortaliças.
Provedor de dados: 14
Autores: PEREIRA, W.
bitstream/item/107342/1/CNPH-DOCUMENTOS-15-PREVENCAO-E-CONTROLE-DA-TIRIRICA-EM-AREAS-CULTIVADAS-COM-HORTALICAS-FL-07825.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Prevencao; Manejo integrado; Disseminacao; 2; 4 D; EPTC; Imazetapyr; MSMA; Naproparmide; Sulfosate; Brasilia; Distrito Federal; Brasil; Prevention; Nutsedge.; Cerrado; Controle Químico; Cyperus Rotundus; Cyperus Esculentus; Erradicação; Herbicida; Hortaliça; Paraquat; Propanil; Tiririca.; Alachlor; Brazil; Atrazine; Diquat; Dicamba; Chemical control; Bentazon; Butylate; Herbicides; Glyphosate; Diuron; Integrated weed management; Imazapyr; Molinate; Metolachlor; Simazine; Vegetables.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/765603

Degradação de atrazina por fungos filamentosos.
Provedor de dados: 14
Autores: MELO, I. S. de; SILVA, C. M. M. de S.; FAY, E. F.; MONTEIRO, R. R.; ROSAMIGLIA, A. C.
Atrazina é um dos herbicidas mais utilizados no mundo, apresentando relativa persistência em zonas saturadas e insaturadas. A principal via de dissipação de atrazina inclui a biodegradação. Solos coletados no município de Guaíra, SP, provenientes de áreas de mata, e solos sob cultivo intensivo, sob irrigação, com histórico de aplicação de atrazina, foram suplementados e incubados com o herbicida nas seguintes concentrações:70 microgramas g-1, 350 microgramas g-1 700 microgramas g-1. Após diluição em série, procedeu-se ao plaqueamento em meio de cultura (meio de Martin), também suplementado com o herbicida (700~g g ' l). Os fungos selecionados nesta fase foram cultivados em meio líquido de batata- dextrose (50%) suplementado com 700 microgramas mL-1 de...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Herbicida; Microrganismo; Atrazina; Biodegradação; Penicillium; Atrazine; Herbicides; Biodegradation.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1026398

Influence des facteurs environmentaux sur l'aneuploïdie chez l'huître creuse, Crassostrea gigas
Provedor de dados: 5
Autores: Baffard, Vincent.
Différents travaux menés depuis 1984 chez l'huître creuse en particulier, montrent qu'i existe, dans les branchies (Thiriot-Quiévreux C., 1982), une certaine proportion de cellules possédant un nombre de chromosomes inférieur au nombre habituel 2N=20. Ce phénomène est l'aneuploïdie. Cette anomalie cytogénétique est mise en évidence par un comptage de chromosomes d'une suspension cellulaire obtenue à partir de branchies. Il est apparu que le taux d'aneuploïdie affectait négativement les taux de croissance (Leitao &amp; al. 2001). Il existe deux types d'origines possibles à l'aneuploïdie. La première peut être génétique (Leitao &amp; al. 2001), et la seconde environnementale. L'effet de l'atrazine sur l'aneuploïdie a déjà fait l'objet de travaux. Il existe...
Tipo: Text
Palavras-chave: Génétique; Aneuploïdie; Huître creuse; Crassostrea gigas; Mercure; Cadmium; Atrazine; Impact.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/00033/14405/11698.pdf

Devenir de l'atrazine dans le bassin de Marennes-Oléron. Approche par la modélisation hydrodynamique, hydrosédimentaire et biogéochimique
Provedor de dados: 5
Autores: Vanhoutte Brunier, Alice.
Atrazine is the most widely used herbicide on cultured areas. This pesticide is degraded during its transport in rivers and streams, to the coastal area. Marennes Oléron is the main french oyster farming area, receiving the fresh water from the Charente river and ail the drainage coming from the coastal cultivated marshlands. Agriculture is thus claimed to be responsible for shellfish mortality in the aquaculture area. To simulate the changing fate of atrazine in the environment, a modelling strategy has been selected. a) First, using a two-way hydrodynamic model developped by IFREMER, the atrazine dilution trail in the Marennes Oléron area was simulated.Combined with larvae bioassays of Crassostrea gigas (Japanese oyster), the results show atrazine rates...
Tipo: Text
Palavras-chave: Produits phytosanitaires; Atrazine; Cycle biogéochimique; Modélisation; Dynamique sédimentaire; Vasières intertidales; Pesticides; Atrazine; Biogeochemical cycle; Models; Sediment transport; Intertidal muflats.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/00412/52312/53082.pdf

Impact of atrazine on somatic aneuploidy in cupped oysters, Crassostrea gigas
Provedor de dados: 5
Autores: Bouilly, Karine; Leitao, Alexandra; Mccombie, Helen; Chaves, R.; Guedes Pinto, H; Boudry, Pierre; Lapegue, Sylvie.
In the Pacific oyster, Crassostrea gigas hypodiploid aneuploid cells with 2n=19, 18 or 17 chromosomes have regularly been reported. There is a negative correlation between somatic aneuploidy and growth rate in oysters (Leitão et al., 2001a) as well as evidence for a genetic basis (Leitão et al., 2001b). Furthermore, non-random chromosome loss has been demonstrated in aneuploid karyotypes of C. gigas using the G-banding technique (Leitão et al., 2001c). This poster summarises different studies used to investigate the effects of the herbicide atrazine on the level of aneuploidy in this species
Tipo: Text
Palavras-chave: Genetic; Aneuploidy; Toxicology; Impact; Atrazine; Crassostrea gigas; Pacific oysters.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/acte-3489.pdf

Study of atrazine effects on Pacific oyster, Crassostrea gigas, haemocytes
Provedor de dados: 5
Autores: Gagnaire, Beatrice; Renault, Tristan; Bouilly, Karine; Lapegue, Sylvie; Thomas-guyon, H.
Shellfish farming is an important economic activity around the world. This activity often takes place in areas subjected to various recurring pollutions. The recrudescent use of herbicides in agriculture including atrazine implies pollutant transfer towards aquatic environment in estuarine areas. Harmful effects of such substances on animals in marine environment, particularly on cultured bivalves, are poorly documented. Bivalve molluscs such as mussels and oysters have been postulated as ideal indicator organisms because of their way of life. They filter large volumes of seawater and may therefore accumulate and concentrate eontaJ.11inants within their tissues. Moreover, development of techniques allowing effect analysis of such compounds on bivalve...
Tipo: Text
Palavras-chave: Crassostrea gigas; Haemocytes; Flow cytometry; Atrazine; Cellular activities; Toxicity.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/publication-2827.pdf

Pollution et taux d'aneuploïdie chez l'huître creuse Crassostrea gigas: étude expérimentale sur une population en milieu contrôlé
Provedor de dados: 5
Autores: Bouilly, Karine.
Aneuploidy has previously been reported in wild and cultivated Pacific oysters, Crassostrea gigas, and it has been shown to be negatively correlated with growth. This is especially important since high variability of growth rate is one of the major problems in the aquacultural production of this species. The existence of an environmental factor (such as atrazine contamination) with an effect on aneuploidy level was first investigated through the study of a population of Crassostrea gigas subjected to different concentrations of atrazine. The treatments applied represent peak values found in the environment (0,01 mg/l) plus a value ten times higher (0,1 mg/l). Our results have shown that although atrazine did not have an effect on the mortality of adult...
Tipo: Text
Palavras-chave: Huître creuse; Crassostrea gigas; Aneuploïdie; Facteur environnemental; Atrazine; Aneuploidy; Pacific oysters; Crassostrea gigas; Environmental factor; Atrazine.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/00428/53932/55060.pdf

Endonuclease banding reveals that atrazine-induced aneuploidy resembles spontaneous chromosome loss in Crassostrea gigas
Provedor de dados: 5
Autores: Bouilly, Karine; Leitao, Alexandra; Chaves, Raquel; Guedes Pinto, Henrique; Boudry, Pierre; Lapegue, Sylvie.
Aneuploidy has previously been observed in the Pacific oyster, Crassostrea gigas, and shown to be negatively correlated with growth. Moreover, a significant impact of atrazine exposure has been described in C. gigas, and persistence of that effect has been observed between generations. Evidence of differential chromosome loss has been demonstrated in aneuploid karyotypes of C. gigas using the G-banding technique. Pairs 1, 5, 9, and 10 are characterized by the loss of 1 chromosome. As restriction enzyme (RE) digestion chromosome banding allows a better identification of chromosome pairs, we used this technique to identify which chromosomes are affected when aneuploidy is increased by exposure to atrazine. The progeny of oysters contaminated by atrazine were...
Tipo: Text
Palavras-chave: Crassostrea gigas; Pacific oyster; Restriction enzyme digestion chromosome banding; Atrazine; Aneuploidy; Crassostrea gigas; Huître creuse; Marquage chromosomique par digestion d'enzymes de restriction; Atrazine; Aneuploïdie.
Ano: 2005
URL: https://archimer.ifremer.fr/doc/2005/publication-654.pdf

Devenir de l'atrazine dans le bassin de Marennes-Oléron (France) - Approche par la modélisation hydrodynamique, hydrosédimentaire et biogéochlmique
Provedor de dados: 5
Autores: Vanhoutte Brunier, Alice.
Atrazine is the most widely used herbicide on cultured areas. This pesticide is degraded during its transport in rivers and streams, to the coastal area. Marennes Oleron is the main french oyster farming area, receiving the fresh water from the Charente river and all the drainage coming from the coastal cultivated marshlands. Agriculture is thus claimed to be responsible for shellfish mortality in the aquaculture area. To simulate the changing fate of atrazine in the environment, a modelling strategy has been selected, a) First, using a two-way hydrodynamic model developped by IFREMER, the atrazine dilution trail in the Marennes Oleron area was simulated.Combined with larvae bioassays of Crassostrea gigas (Japanese oyster), the results show atrazine rates...
Tipo: Text
Palavras-chave: Produits phytosanitaires; Atrazine; Cycle biogéochimique; Modélisation; Dynamique sédimentaire; Vasières intertidales.; Pesticides; Atrazine; Biogeochemical cycle; Models; Sediment transport; Intertidal muflats.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/00306/41764/40977.pdf

Environmental risk assessment: A critical approach of the European TGD in an in situ application
Provedor de dados: 5
Autores: 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

Impact of pollutants on aneuploidy in the Pacific oyster, Crassostrea gigas
Provedor de dados: 5
Autores: Bouilly, Karine; Leitao, Alexandra; Mccombie, Helen; Miramand, Pierre; Lapegue, Sylvie.
Aneuploidy is the alteration of the normal diploid chromosome number. In the Pacifie oyster, Crassastrea gigas, hypodiploid cells have regularly been reported as have a negative correlation between this phenomenon and growth and evidence for a genetic basis. We previously demonstrated a positive relationship between a pollutant, atrazine, and aneuploidy in Crassastrea gigas adults and juveniles. To evaluate the persistence of this impact, the present study focused on a sample of the same juveniles previously exposed to different atrazine treatments (0.0 1 mg/l which represents a peak value found in a polluted environment and 0.1 mg/l) for three and a half months. Then, we evaluated them for aneuploidy after another two and a half months in non polluted...
Tipo: Text
Palavras-chave: Cadmium; Atrazine; Pollutant; Pacific oyster; Aneuploidy.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/acte-2852.pdf

Etude des anomalies chromosomiques chez Crassostrea gigas
Provedor de dados: 5
Autores: Lapegue, Sylvie; Mccombie, Helen; Leitao, Alexandra; Bouilly, Karine; Sabatier, Sebastien; Heurtebise, Serge; Boudry, Pierre; Thiriot, Catherine; Gerard, Andre.
Divers travaux menés depuis 1984 montrent qu'il existe, chez l'huître creuse Crassostrea gigas, des cellules montrant un nombre anormal de chromosomes (2n = 19, 18 ou même 17 au lieu de 2n = 20). Le niveau d'aneuploïdie est déterminé par le décompte des chromosomes à partir de suspensions cellulaires de tissu branchial. Le pourcentage de cellules aneuploïdes est toujours significativement supérieur dans les "lots de queue", c'est-à-dire les huîtres présentant des croissances plus faibles, et peut atteindre plus de 30 %. Récemment, une étude réalisée au sein du programme européen « Genephys » a démontré que plus de 50 % de la variance pour la vitesse de croissance était liée au taux d'aneuploïdie. Cependant, de nombreux points concernant ce phénomène...
Tipo: Text
Palavras-chave: Génétique; Chromosomes; Anomalies; Aneuploïdie; Atrazine; Huîtres creuses; Crassostrea gigas.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/00199/31013/29417.pdf

Recherche d'effets biologiques de l'atrazine sur hémocytes d'huître creuse, Crassostrea gigas, in vivo et in vitro
Provedor de dados: 5
Autores: Gagnaire, Beatrice; Thomas-guyon, Hélène; Lapegue, Sylvie; Bouilly, Karine; Renault, Tristan.
In the last decades, shellfish farming and in particular ostreiculture have developed in a significant way in France. Marennes-Oleron (Charente-Maritime) basin is the first French producer of oysters. But this area is also subjected to many recurring pollution, brought mainly by the Charente river.  The recrudescence using of herbicides in agriculture including atrazine implies the transfer towards the aquatic environment of new pollutants in estuarine areas. Moreover industrial rejections bring many heavy metals in these same estuarine areas.  It is appropriate of wondering on harmful effects of all these pollutants on the animals living in these areas, particularly oysters.  Bivalve molluscs have been postulated as ideal indicator organisms because of...
Tipo: Text
Palavras-chave: Atrazine; Flow cytometry; Haemocytes; Crassostrea gigas; Atrazine; Cytométrie de flux; Hémocytes; Crassostrea gigas.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/acte-834.pdf

Pollution et taux d'aneuploïdie chez l'huître creuse Crassostrea gigas : étude expérimentale sur une population en milieu contrôlé
Provedor de dados: 5
Autores: Sabatier, Sebastien.
Le bassin de Marennes-Oléron, milieu fortement anthropisé, souffre d'une diminution générale du taux de croissance des huîtres creuses, Crassostrea gigas. Si les fortes densités existants dans le bassin sont grandement responsables de ce phénomène, d'autres facteurs environnementaux peuvent intervenir. Nous nous sommes intéressés à un caractère corrélé négativement à la croissance, le taux d'aneuploïdie. Il s'agit d'un phénomène cytogénétique ayant pour conséquence la perte ou le gain de chromosomes. Dans cette étude, une expérimentation en écloserie a été mise en place afin de tester l'effet de l'atrazine (herbicide très utilisé et se retrouvant en quantité importante dans le bassin) sur le taux d'aneuploïdie de naissains d'huîtres. Les valeurs testées...
Tipo: Text
Palavras-chave: Crassostrea gigas; Naissain; Aneuploïdie; Environnement; Atrazine; Anthropisation.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/00033/14408/11701.pdf

Etude de l'impact de micropolluants sur les capacités immunitaires de l'huître creuse, Crassostrea gigas, in vivo et in vitro
Provedor de dados: 5
Autores: Gagnaire, Beatrice.
La conchyliculture et notamment l'ostréiculture se sont beaucoup développées en France dans les dernières décennies. Le bassin de Marennes-Oléron (Charente-Maritime) est le premier bassin français producteur d'huîtres. Mais cette zone est également soumise à de nombreuses pollution récurrentes, apportées principalement par la Charente. La recrudescence de l'utilisation d'herbicides en agriculture tels que l'atrazine implique le transfert vers le milieu aquatique de nouveaux polluants dans les zones d'estuaires. De plus, les rejets industriels apportent de nombreux métaux lourds dans ces mêmes zones d'estuaire. Il convient de s'interroger sur les effets néfastes de tous ces polluants sur les animaux vivant dans ces zones, tout particulièrement les huîtres,...
Tipo: Text
Palavras-chave: Crassostrea gigas; Hémocytes; Cytométrie de flux; Métaux lourds; Atrazine; Phénoloxydase.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/00032/14337/11620.pdf

Persistence of atrazine impact on aneuploidy in Pacific oysters, Crassostrea gigas
Provedor de dados: 5
Autores: Bouilly, Karine; Mccombie, Helen; Leitao, Alexandra; Lapegue, Sylvie.
Widespread use of the herbicide atrazine has incited much research on its toxicity in aquatic systems, where it is routinely detected due to runoff from cultivated fields. Moreover, the determination of the genotoxic effect of such pollutants in the marine environment has become a major requirement for ecosystem protection. In the Pacific oyster, Crassostrea gigas, hypodiploid aneuploid cells have regularly been reported. There is a negative correlation between this phenomenon and growth, as well as evidence for a genetic basis. A positive relationship between atrazine and aneuploidy has previously been demonstrated in C. gigas adults and juveniles. To evaluate the persistence of this impact, our study examined the offspring of the same adult population...
Tipo: Text
Palavras-chave: Aneuploidy; Crassostrea gigas; Atrazine; Toxicity; Pollutant persistence.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/publication-580.pdf

Toxicité d'un désherbant, l'atrazine-simazine, sur les jeunes stades larvaires de Crassostrea gigas et sur deux algues fourrages, Isochrysis aff-galbana et Chaestoceros calcitrans
Provedor de dados: 5
Autores: Robert, Rene; His, Edouard; Maurer, Daniele.
Corn culture has strongly developed in Aquitaine (France) over the past years, and lead to an increased use of pesticides and herbicides. One of the most commonly used formulations around the coast of the Arcachon Bay, an historical oyster spat capture zone, is the Atrazine-Simazine mix. The action limits of this product are defined on Crassostrea gigas larvae and on two nanoplankton test strains used in a controlled environment for their food, Isochrysis aff-galbana and Chaetoceros calcitrans. Herbicides can indeed directly impact on oyster larvae, but they can also have a negative impact by interfering with the development of the algae used as aquaculture feed and feed for veligeres.
Tipo: Text
Palavras-chave: Chaestoceros calcitrans; Isochrysis aff galbana; Algues unicellulaires; Crassostrea gigas; LARVES; Simazine; Atrazine; Ecotoxicologie.
Ano: 1985
URL: http://archimer.ifremer.fr/doc/1985/acte-6183.PDF

Impact de facteurs environnementaux sur l'aneuploïdie chez l'huître creuse, Crassostrea gigas, dans le bassin de Marennes-Oléron
Provedor de dados: 5
Autores: Bouilly, Karine.
The impact of environmental factors on aneuploidy level in the oyster Crassostrea gigas was studied with experiments in controlled conditions which exposed adult and juvenile oysters to different pollutants (atrazine, a herbicide, and cadmium, a heavy metal) frequently found in Marennes-Oléron Bay. A positive correlation between atrazine concentration and aneuploidy in C. gigas was observed. Moreover, the impact of atrazine on aneuploidy level persisted in time both within and between generations, demonstrating the influence of an environmental pollution on this phenomenon. On the other hand, the aneuploidy level of C. gigas was not influenced at the cadmium concentrations tested. Significant differences in aneuploidy levels were observed in oysters...
Tipo: Text
Palavras-chave: Marennes Oléron Bay; Cadmium; Atrazine; Environmental factors; Aneuploidy; Crassostrea gigas; Bassin de Marennes Oléron; Cadmium; Atrazine; Facteurs environnementaux; Aneuploïdie; Crassostrea gigas.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/these-326.pdf

Inhibition of microphytobenthic photosynthesis by the herbicides atrazine and diuron
Provedor de dados: 5
Autores: 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

Controle de plantas daninhas na cultura do milho-pipoca com herbicidas aplicados em pós-emergência
Provedor de dados: 87
Autores: Jakelaitis,A.; Silva,A.F.; Silva,A.A.; Ferreira,L.R.; Vivian,R.
Objetivou-se avaliar a eficiência de controle de plantas daninhas, a tolerância e a produção de milho-pipoca UFVM2 aos herbicidas atrazine (1.500 g ha-1), foramsulfuron + iodosulfuron methyl sodium + atrazine (15+1+1.500 e 30+2+1.500 g ha-1), foramsulfuron + iodosulfuron methyl sodium (15+1, 30+2, 45+3 e 60+4 g ha-1), nicosulfuron + atrazine (8+1.500 e 16+1.500 g ha-1) e nicosulfuron (16 g ha-1). A aplicação dos herbicidas foi realizada aos 25 dias após a emergência da cultura. As plantas daninhas predominantes na área foram Brachiaria plantaginea, Brachiaria decumbens e Ipomoea spp. Os herbicidas foramsulfuron + iodosulfuron methyl sodium, em todas as doses testadas, proporcionaram maiores índices de toxidez à cultura, aos 7, 14 e 28 dias após a aplicação...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Competição; Sulfoniluréias; Atrazine.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582005000300015

Influência de herbicidas e de sistemas de semeadura de Brachiaria brizantha consorciada com milho
Provedor de dados: 87
Autores: Jakelaitis,A.; Silva,A.F.; Silva,A.A.; Ferreira,L.R.; Freitas,F.C.L.; Vivian,R.
O objetivo deste trabalho foi avaliar a ocorrência de plantas daninhas, o estado nutricional e a produtividade do milho e de Brachiaria brizantha consorciados em diferentes arranjos de semeadura da braquiária, tratados com a mistura dos herbicidas nicosulfuron + atrazine e atrazine. Nas parcelas, os tratamentos foram constituídos das semeaduras de milho e B. brizantha em monocultivo, mais quatro formas de estabelecimento da braquiária, representadas pela semeadura de uma e duas linhas de braquiária na entrelinha do milho; pela semeadura na mesma linha do milho; e pela semeadura da forrageira a lanço na entrelinha do milho. Nas subparcelas, os dois tratamentos secundários constaram do uso da mistura dos herbicidas nicosulfuron + atrazine (8 + 1.500 g ha-1)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Integração agricultura-pecuária; Nicosulfuron; Atrazine.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582005000100008

Evaluacion de herbicidas de aplicacion temprana en el cultivo de melon de trasplante
Provedor de dados: 87
Autores: Cantamutto,M.A.; Ayastuy,M.E.; Elisei,V.R.
O objetivo deste trabalho foi selecionar herbicidas para otimizar o controle de plantas daninhas e o rendimento da cultura de melão, implantada pela técnica de transplante, nas condições agroecológicas do sul da província de Buneos Aires. Com a finalidade de proteger a cultura durante o período crítico de competição das plantas daninhas, nas primeiras sete semanas , foram utilizados os herbicida trifluralin, pendimethalin , metribuzin, naptalan, butylate, atrazine, linuron e misturas de pendimethalin + linuron, antes do transplante. Os três primeiros herbicidas foram incorporados ao solo de forma mecânica e os demais mediante irrigação. Durante as safras 1992/93 e 1993/94 os herbicidas naptalan, pendimethalin e a mistura controlaram de forma eficiente a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cucumis melon; Trifluralin; Pendimethalin; Linuron; Butylate; Atrazine; Naptalan; Planta daninha.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83581996000100003

Manejo de plantas daninhas no consórcio de milho com capim-braquiária (Brachiaria decumbens)
Provedor de dados: 87
Autores: Jakelaitis,A.; Silva,A.A.; Ferreira,L.R.; Silva,A.F.; Freitas,F.C.L.
Objetivou-se neste trabalho avaliar os efeitos do nicosulfuron em mistura com atrazine sobre espécies daninhas e produção de milho e de Brachiaria decumbens cultivados em consórcio, nos sistemas de plantios direto e convencional. Foram avaliadas seis doses de nicosulfuron (0, 2, 4, 8, 16 e 24 g ha-1) em mistura com atrazine na dose de 1.500 g ha-1, mais duas testemunhas capinadas, representadas por ambas as espécies em monocultivo. As espécies daninhas anuais de propagação seminífera foram controladas com eficiência pelo nicosulfuron a partir de 8 g ha-1 em mistura com atrazine, independentemente do sistema de plantio. Ao contrário, as espécies perenes (Artemisia verlotorum e Cyperus rotundus) de propagação vegetativa não foram controladas pela mistura de...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sistemas de manejo; Nicosulfuron; Atrazine.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582004000400009

Interação entre herbicida e inseticida sobre o milho-pipoca (Zea mays), as plantas daninhas e a lagarta-do-cartucho
Provedor de dados: 87
Autores: Silva,A.A.; Jakelaitis,A.; Freitas,F.M.; Ferreira,L.R.; Vivian,R.
O objetivo deste trabalho foi avaliar o efeito da mistura de herbicidas nicosulfuron + atrazine e o inseticida chlorpirifos sobre o cultivar de milho-pipoca UFVM2, as plantas daninhas e a lagarta-do-cartucho. Utilizou-se o delineamento experimental de blocos completos ao acaso, em esquema fatorial (5x2)+3, com quatro repetições. O primeiro fator foi constituído pelas doses de nicosulfuron (0, 10, 20, 30 e 40 g ha-1) + atrazine (1.200 g ha-1) + óleo mineral (900 g ha-1) e o segundo pelas doses do inseticida chlorpirifos (0 e 240 g ha-1). Foram avaliados três tratamentos adicionais: duas testemunhas, com e sem capina, ambas sem inseticida, e uma testemunha com capina e com inseticida. Não se observou interação significativa entre doses de nicosulfuron e do...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chlorpirifos; Atrazine; Nicosulfuron.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582007000100020

Avaliação de herbicidas para dois cultivares de mandioca
Provedor de dados: 87
Autores: Biffe,D.F; Constantin,J; Oliveira Jr,R.S; Rios,F.A; Franchini,L.H.M; Gemelli,A; Arantes,J.G.Z; Raimondi,M.A; Blainski,E.
É importante avaliar a tolerância de variedade de mandioca a novas alternativas de controle químico, com o intuito de ampliar as opções disponíveis. Este trabalho teve como objetivo avaliar a seletividade de herbicidas aplicados em pré-emergência, para duas importantes variedades de mandioca cultivadas no Estado do Paraná. Os herbicidas e respectivas doses (g i.a. ha-1) avaliadas foram: diuron (400 e 800), metribuzin (360 e 720), isoxaflutole (60), atrazine (720), S-metolachlor (1.920) e as misturas ametryn + clomazone (1.350+1.900), ametryn+trifluralin (1.500+1.350), isoxaflutole+metribuzin (60+320), isoxaflutole+diuron (60+400), combinados com uso de uma testemunha dupla adjacente a cada tratamento. Os cultivares utilizados neste trabalho foram Fécula...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Variedades; Diuron; Isoxaflutole; Metribuzin; Atrazine; S-metolachlor.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582010000400014

Atividade microbiana e produção de milho (Zea mays) e de Brachiaria brizantha sob diferentes métodos de controle de plantas daninhas
Provedor de dados: 87
Autores: Jakelaitis,A.; Santos,J.B.; Vivian,R.; Silva,A.A.
Avaliaram-se nesta pesquisa os efeitos dos herbicidas atrazine + nicosulfuron aplicados no consórcio entre milho a Brachiaria brizantha sobre a atividade microbiana do solo e a produtividade de ambas as espécies consorciadas. Os tratamentos constituíram-se do consórcio entre o milho e a forrageira B. brizantha, tratado com os herbicidas atrazine (1.500 g ha-1) ou a mistura deste com nicosulfuron (0, 4 e 32 g ha-1), e de duas testemunhas, representadas pelo consórcio capinado e sem capina. Os herbicidas foram aplicados 30 dias após a emergência (DAE) do milho. Utilizou-se o delineamento em blocos casualizados, com quatro repetições. Foram avaliados a respiração, a biomassa microbiana (BM) e o quociente metabólico (qCO2) de amostras de solo coletadas aos...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atrazine; Biomassa microbiana; Consórcio; Nicosulfuron; Plantio direto; Quociente metabólico.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582007000100008

Antagonismo na associação de glyphosate e triazinas
Provedor de dados: 87
Autores: Vidal,R.A.; Machry,M.; Hernandes,G.C.; Fleck,N.G.
No sistema de semeadura direta, há a necessidade de realizar o controle da vegetação existente na área antes da semeadura da cultura e também de utilizar herbicidas residuais para evitar a infestação de plantas daninhas no período inicial do desenvolvimento da cultura. É interesse dos agricultores utilizar herbicidas dessecantes e residuais simultaneamente, a fim de economizar tempo e recursos financeiros. O objetivo deste trabalho foi verificar a compatibilidade de glyphosate e triazinas quando associados no tanque do pulverizador. O experimento foi realizado em campo, na safra de crescimento 2001-2002. Utilizou-se como planta reagente o sorgo, híbrido Dekalb 865, semeado em novembro de 2001. Os tratamentos herbicidas foram aplicados 60 dias após a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plantio direto; Sorghum bicolor; Mistura; Atrazine; Simazine.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582003000200016

Efeitos de herbicidas no consórcio de milho com Brachiaria brizantha
Provedor de dados: 87
Autores: Jakelaitis,A.; Silva,A.A.; Ferreira,L.R.; Silva,A.F.; Pereira,J.L.; Viana,R.G.
A eficiência de herbicidas aplicados em pós-emergência foi avaliada para o controle de plantas daninhas no consórcio de milho com Brachiaria brizantha e verificando seus efeitos sobre as espécies consorciadas. Os tratamentos foram representados pelos herbicidas atrazine (1.500 g ha-1), foramsulfuron + iodosulfuron methyl sodium + atrazine (15 + 1 + 1.500 e 30 + 2 + 1.500 g ha-1), foramsulfuron + iodosulfuron methyl sodium (45 + 3 g ha¹), nicosulfuron + atrazine (2 + 1.500; 4 + 1.500; 8 + 1.500; 12 + 1.500 g ha-1) mais a testemunha capinada (milho solteiro) e sem capina, arranjados em blocos ao acaso, com três repetições. Foram avaliados a porcentagem de controle de Digitaria horizontalis e de espécies do gênero Ipomoea, a toxicidade à cultura do milho, a...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atrazine; Planta daninha; Sulfoniluréias.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582005000100009

Influência de chuva simulada após aplicação de herbicidas em pós-emergência, sobre o controle de plantas daninhas, em solo com dois níveis de umidade
Provedor de dados: 87
Autores: Bastiani,Marcos L.R.; Silva,Antônio A.; Ferreira,Francisco A.; Cardoso,Antônio A.
Dois experimentos foram conduzidos em 1995, em casa-de-vegetação do Departamento de Fitotecnia da Universidade Federal Viçosa, Viçosa-MG, com o objetivo de avaliar a influência da chuva após a aplicação de herbicidas, no controle de capim-marmelada (Brachiaria plantaginea L.) e picão-preto (Bidens pilosa L.), na cultura do milho (Zea mays L.), em solo com dois níveis de umidade. Foram aplicados o nicosulfuron em duas formulações (SC e WDG) e as misturas nicosulfuron + atrazine e atrazine + óleo, com intervalos de 0, 15, 30, 60 e 120 min entre a aplicação do herbicida e a ocorrência de 30 mm de chuva simulada. O delineamento experimental foi o de blocos casualizados, com quatro repetições, dispostos em arranjo fatorial 5x5, sendo o primeiro fator...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brachiaria plantaginea; Bidens pilosa; Zea mays; Atrazine; Nicosulfuron.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582000000100006

Chlorophyll fluorescence in guanandi tree (Calophyllum brasiliense) after herbicide application
Provedor de dados: 87
Autores: ARALDI,R.; CORNIANI,N.; TROPALDI,L.; GIROTTO,M.; BELAPART,D.; SIMÕES,P.S.; VELINI,E.D.
Chlorophyll fluorescence is currently used as a rapid diagnostic and nondestructive method to detect and quantify damage on the photosynthetic apparatus of leaves on weeds, crops and ornamental/coniferous trees in response to both environmental stress and herbicides. This study aimed to evaluate chlorophyll fluorescence in guanandi plants (Calophyllum brasiliense) after application of different postemergence herbicides. The experiment was performed in a completely randomized design, with six treatments (control, bentazon, sulfentrazone, isoxaflutole, atrazine and glyphosate) and five replications. The herbicide treatments were applied with a stationary sprayer, and electron transport rate (ETR) was subsequently analyzed with OS5p Multi-Mode Chlorophyll...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Electron transport rate; Bentazon; Sulfentrazone; Isoxaflutole; Atrazine; Glyphosate.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000100077

ACCOUNTING FOR SPATIAL CHARACTERISTICS OF WATERSHEDS IN EVALUATING WATER POLLUTION ABATEMENT POLICIES
Provedor de dados: 31
Autores: Qiu,   Zeyuan; Prato,   Anthony A.
This study evaluates three agricultural nonpoint pollution abatement policies: regulating the spatial pattern of agricultural activities, ambient tax, and abatement tax/subsidy.  All three policies incorporate spatial characteristics of agricultural emission loading and movement for an agricultural watershed in the Midwest.  The effects of spatial variation in natural conditions and landscape features on agricultural emissions and crop yield are evaluated using a newly developed biophysical simulation model and experimental data.  While the policies are equally cost effective in reducing agricultural nonpoint source pollution, their implementation feasibility is quite different.
Tipo: Journal Article
Palavras-chave: Atrazine; Environmental policy; Nonpoint pollution; Simulation; Watershed management; Water quality; Environmental Economics and Policy.
Ano: 1999
URL: http://purl.umn.edu/15135

Estimating Economic Health Costs of Not Controlling Toxic Water Pollution
Provedor de dados: 31
Autores: Easter,   K. William; Konishi,   Yoshifumi.
The purpose of this paper is to determine what types of information may be important in determining the welfare benefits of preventing toxic water contamination when a given type of toxification occurs (or is likely to occur) in a given setting. It attempts to identify information and behavior issues that need to be considered when policy makers and others wish to obtain reasonable estimates of welfare benefits and weigh them against the economic costs of removing toxins. This paper also provides reasonable "scenarios" for three toxic pollutants that are found in water bodies (surface water or groundwater). We make use of two country alternatives--one in developing countries and the other in developed countries--to demonstrate, with specific examples of...
Tipo: Conference Paper or Presentation
Palavras-chave: Welfare costs; Arsenic; Mercury; Atrazine; Information; Water; Environmental Economics and Policy; Health Economics and Policy.
Ano: 2006
URL: http://purl.umn.edu/25768

Potential Environmental Contamination From Conventional and Alternative Cropping Systems in Northeast Kansas
Provedor de dados: 31
Autores: Koo,   Seungmo; Diebel,   Penelope L.
Surface-water contamination from agricultural chemicals is a problem in northeast Kansas. The objective of this study is to compare potential atrazine, nitrogen, and sediment loadings from regional conventional and alternative cropping systems. Results indicate that several alternative systems have lower loading levels for atrazine and sediment than the conventional system, but higher loading levels for nitrogen
Tipo: Working or Discussion Paper
Palavras-chave: Alternative agriculture; Nitrogen; Atrazine; Crop Production/Industries; Environmental Economics and Policy.
Ano: 1994
URL: http://purl.umn.edu/118148

ECONOMIC AND ENVIRONMENTAL EFFECTS ASSOCIATED WITH REDUCING THE USE OF ATRAZINE: AN EXAMPLE OF CROSS-DISCIPLINARY RESEARCH
Provedor de dados: 31
Autores: Ribaudo,   Marc; Hurley,   Terrance M.
Restricting or eliminating the use of atrazine in the Midwest would have important economic consequences for farmers, consumers, and the environment.  These consequences can only be evaluated with cooperation between economists and weed scientists.  The weed control choice set available to farmers cannot be observed through deductive research.  Economists and weed scientists worked together to identify all possible weed control strategies for corn and sorghum in the Midwest and to incorporate them into an economic model.  An atrazine ban was found to be the costliest strategy, and a targeted, water-quality based strategy the most cost effective.
Tipo: Journal Article
Palavras-chave: Atrazine; Deductive research; Environmental exposure; Herbicides; Inductive research; Welfare; Crop Production/Industries.
Ano: 1997
URL: http://purl.umn.edu/15542

WILL FARMERS USE SAFER PESTICIDES?
Provedor de dados: 31
Autores: Owens,   Nicole N.; Swinton,   Scott M.; van Ravenswaay,   Eileen O.
Virtually all technology adoption studies are conducted ex post, yet policy makers often need to assess the likely level of adoption before the technology is introduced.  This study uses data from a contingent valuation survey of Michigan corn growers to assess what factors would influence the adoption of two safer corn herbicides, one that is not carcinogenic and one that does not leach. Results indicate that price, risk perception, and sources of pest control information are all important.  This suggests that public policies designed to change perceptions and improve information dissemination may encourage voluntary use of more environmentally friendly technologies.
Tipo: Working or Discussion Paper
Palavras-chave: Atrazine; Cancer risk; Contingent valuation; Herbicides; Nitrate leaching; Public policy; Technology adoption; Crop Production/Industries.
Ano: 1997
URL: http://purl.umn.edu/11577

Chlorophyll fluorescence in the evaluation of photosynthetic electron transport chain inhibitors in the pea
Provedor de dados: 124
Autores: Farias,Marcio Espinosa; Martinazzo,Emanuela Garbin; Bacarin,Marcos Antonio.
ABSTRACT The study aimed to evaluate the behavior of the chair of photosynthetic electron transport in the presence of DCMU and atrazine in detached leaves of pea through simultaneous measurements of the kinetics of fluorescence transient, fluorescence delayed and modulated reflection at 820 nm. The petioles of the leaves were immersed for two hours in solution of inhibitors at concentrations of 0 (control), 25, 50, 100, 250 and 500 µM. Measurements of the kinetics of fluorescence transient and fluorescence delayed and modulated reflection at 820 nm were recorded simultaneously by the M-PEA fluorometer. Simultaneous measurement of fluorescence transient, fluorescence delayed and modulated 820 nm reflection is important for assessments of the photosynthetic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pisum sativum L.; Fluorescence transient; Delayed fluorescence; DCMU; Atrazine.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000100178

ATRAZINE EFFICIENCY IN AN ANDISOL AS AFFECTED BY CLAYS AND NANOCLAYS IN ETHYLCELLULOSE CONTROLLED RELEASE FORMULATIONS
Provedor de dados: 127
Autores: Cea,M; Cartes,P; Palma,G; Mora,M.L.
Atrazine, a herbicide used for the control of broadleaf weeds of different crops, was incorporated in ethylcellulose controlled release formulations (CRFs) by using the solvent evaporation technique. Allophanic clays and nanoclays were incorporated as matrix modifying agents. The formulations were characterized by scanning electron microscopy (SEM) and infrared spectroscopy (FTIR), and their behavior was determined in aqueous phase. Dissipation studies and soil columns experiments with CRFs were also carried out, and compared with commercial formulations (CFs). In addition, a short-term bioassay was performed to evaluate the effect of CRFs and CFs on the emergence and growth of field mustard (Brassica campestris L.) under greenhouse conditions. The matrix...
Tipo: Journal article
Palavras-chave: Atrazine; Natural clays and nanoclays; Controlled release; Soil; Herbicidal activity.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912010000100007

Atrazine movement in a dark red latosol of the tropics
Provedor de dados: 63
Autores: Souza,M.D. de; Basssoi,L.H.; Bacchi,O.O.S.; Reichardt,K.; Hermes,L.C.; Abakerli,R.B.; Pilotto,J.E.
Atrazine displacement was studied in a soil profile as a function of water movement and time after herbicide application, taking into account possible influence of preferential flow on leaching. The experiment consisted of two 7 x 7m plots of a dark red latosol (Kanduidalfic Eutrudox), located at Piracicaba, SP, Brazil (22º 43'S and 47º 25'W), 250km inside continent, at an altitude of 580m. One plot was previously treated with 1,000 kg/ha of lime, in order to increase base saturation to 88%, and 500kg/ha of gypsum. Each plot was instrumented with tensiometers, neutron probe access tubes and soil solution extractors, in order to monitor water and atrazine flows. Atrazine was applied at the high rate of 6 kg/ha of active principle. Results showed intensive...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atrazine; Leaching; Preferential flow; Adsorption; Herbicide; Tropical soil.
Ano: 1997
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161997000300013

Some Economic considerations regarding the use of atrazine herbicide on maize in Thailand
Provedor de dados: 106
Autores: Montgomery, Roger; Sanit Kao-ian; Chamnien Boonma.
8 tables
Palavras-chave: Corn; Maize; Weeds; Atrazine; Herbicides; Weed control; Economic analysis; Yields; ข้าวโพด; วัชพืช; อาทราซีน; สารกำจัดวัชพืช; การวิเคราะห์ทางด้านเศรษฐกิจ; การผลิต.
Ano: 1981
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4079

Comparison of response of legumes on previously atrazine treated soil with that of untreated and newly treated soils
Provedor de dados: 106
Autores: Dad, Chaudhry Allah.
Palavras-chave: Legumes; Soybeans; Mungbeans; Atrazine; Herbicides; Soil treatment; Weed control; ข้าวโพด; อาทราซีน; พืชตระกูลถั่ว; การจัดการดิน.
Ano: 1971
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3781

Effect of atrazine on controlling Euphorbia geniculata in corn
Provedor de dados: 106
Autores: Somchart Kanjanajirawong; Jaran Pratoomwong; Maneesa Teerawatsakul.
2 tables
Palavras-chave: Corn; Maize; Weeds; Milkweed; Euphorbia geniculata; Atrazine; Weed control; ข้าวโพด; วัชพืช; อาทราซีน; ยูโฟร์เบีย.
Ano: 1981
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4061

Crop production and soil management practices for improving yield of corn and sorghum
Provedor de dados: 106
3 ill., 5 tables
Palavras-chave: Corn; Maize; Sorghum; Crop production; Soil management; Cultural practices; Nitrogen fertilizers; Leaf removal; Planting date; Atrazine; Dry matter; Yields; ข้าวโพด; ข้าวฟ่าง; การผลิต; การจัดการดิน; การเพาะปลูก.
Ano: 1974
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3795

Effects of certain herbicides on field corn
Provedor de dados: 106
Autores: Umporn Suwunnamek; Surapol Chowchong.
1 table
Palavras-chave: Corn; Maize; Herbicides; Atrazine; Alachlor; Cyanazine; Weed control; ข้าวโพด; สารกำจัดวัชพืช; อาทราซีน; อะลาคลอร์; ไซยานาซีน.
Ano: 1976
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3856

Application of herbicides in corn
Provedor de dados: 106
Autores: Somchart Kanjanajirawong; Maneesa Teerawatsakul.
1 table
Palavras-chave: Corn; Maize; Herbicides; Weed control; Atrazine; Alachlor; ข้าวโพด; การควบคุมวัชพืช; อาทราซีน; อะลาคลอร์.
Ano: 1976
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3857

Atividade de glutationa S-transferase na metabolização de acetochlor, atrazine e oxyfluorfen em milho (Zea mays L.), sorgo (Sorghum bicolor L.) e trigo (Triticum aestivum L.) (Poaceae)
Provedor de dados: 3
Autores: Cataneo, Ana Catarina; UNESP; Chamma, Karina Luiz; UNESP; Ferreira, Leonardo César; UNESP; Déstro, Guilherme Fernando Gomes; UNESP; Carvalho, José Claudionir; UNESP; Novelli, Ethel Lourenzi Barbosa; UNESP.
Este experimento foi conduzido para avaliar a seletividade em plantas dos herbicidas acetochlor, atrazine e oxyfluorfen em relação à atividade da glutationa S-transferase (GST) em plantas de milho (Zea mays L.), sorgo (Sorghum bicolor L.) e trigo (Triticum aestivum L.) (Poaceae). A atividade da GST foi detectada às 24, 48 e 72 horas após as aplicações dos tratamentos. Os tratamentos do experimento consistiram de aplicação com água (controle), acetochlor (3 L.ha-1), atrazine (4 L.ha-1) e oxyfluorfen (1 L.ha-1). As maiores atividades de GST foram observadas na presença de acetochlor, principalmente às 48 horas após o tratamento. Esses aumentos foram 105, 148 e 118% em relação ao controle para milho, sorgo e trigo, respectivamente. É sugerido que a GST pode...
Palavras-chave: 2.00.00.00-6 Ciências Biológicas glutationa S-transferase; Atrazine; Acetochlor; Oxyfluorfen; Herbicidas; Seletividade 2.00.00.00-6 Ciências Biológicas.
Ano: 2002
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/2366

New aspects on atrazine biodegradation
Provedor de dados: 52
Autores: Sene,Luciane; Converti,Attilio; Secchi,Geslaine Aparecida Ribeiro; Simão,Rita de Cássia Garcia.
The world practice of using agrochemicals for long periods, in an indiscriminated and abusive way, has been a concern of the authorities involved in public health and sustainability of the natural resources, as a consequence of environmental contamination. Agrochemicals refer to a broad range of insecticides, fungicides and herbicides, and among them stands out atrazine, a herbicide intensively used in sugarcane, corn and sorghum cultures, among others. Researches have demonstrated that atrazine has toxic effects in algae, aquatic plants, aquatic insects, fishes and mammals. Due to the toxicity and persistence of atrazine in the environment, the search of microbial strains capable of degrading it is fundamental to the development of bioremediation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atrazine; Biodegradation; Bacteria; Fungi; Microbial consortium.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000200030

Performance of herbicides in sugarcane straw
Provedor de dados: 65
Autores: 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

Sinergismo potencial entre herbicidas inibidores do fotossistema II e da síntese de carotenóides
Provedor de dados: 65
Autores: Kruse,Nelson Diehl; Vidal,Ribas Antonio; Bauman,Thomas Trost; Trezzi,Michelangelo Muzzel.
Herbicidas inibidores do transporte de elétrons na fotossíntese geram estresse oxidativo. Esse estresse normalmente é amenizado pela ação dos carotenóides que dissipam a energia acumulada na forma de calor. Assim, hipotetiza-se que misturas entre herbicidas inibidores do transporte de elétrons, em nível do fotossistema II, e inibidores da síntese de carotenóides possam resultar em sinergismo. O objetivo deste trabalho foi verificar a existência de sinergismo em misturas com herbicidas pertencentes aos dois mecanismos de ação acima mencionados. Para tanto, foram conduzidos dois experimentos: um, com a cultura do milho, nos EUA, em 1998; e outro com cultura da soja, no Brasil, em 1998/99. No experimento com milho, testou-se isoxaflutole nas doses de 0 e...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Misturas em tanque; Atrazine; Clomazone; Isoxaflutole; Metribuzin.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782001000400002

Isolamento e seleção de fungos para biorremediação a partir de solo contaminado com herbicidas triazínicos
Provedor de dados: 64
Autores: Colla,Luciane Maria; Primaz,Andreiza Lazzarotto; Lima,Marieli de; Bertolin,Telma Elita; Costa,Jorge Alberto Vieira.
A biorremediação é uma tecnologia que utiliza o metabolismo de microrganismos para eliminação ou redução, a níveis aceitáveis, de poluentes presentes no ambiente. Os herbicidas triazínicos são usados intensivamente no controle de ervas daninhas, principalmente na cultura de milho. Objetivou-se, neste trabalho, isolar fungos filamentosos de solos contaminados com herbicidas triazínicos (atrazine e simazine) e selecionar os microrganismos isolados quanto à capacidade de crescimento em meio adicionado de atrazine. Os microrganismos foram isolados, cultivados em meio Ágar-Batata-Dextrose (BDA) acidificado com ácido tartárico 10%, adicionado de 50 mg.Kg-1 de atrazine e incubados por 5 dias a 25ºC. Foi realizada a medida diária do crescimento fúngico e calculada...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atrazine; Simazine; Isolamento; Fungos filamentosos.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542008000300016