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| Registros recuperados: 84 | |
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| Nascente,Adriano S.; Stone,Luís F.; Guimarães,Cleber M.. |
| An important point in no-tillage system is the time between cover crop glyphosate desiccation and rice sowing. This study aimed to verify the effect of Brachiaria ruziziensis management time before rice sowing on rice yield and its components. The experiment was conducted under greenhouse conditions and consisted of four types of B. ruziziensis management: with Brachiaria and with herbicide (WBWH), without Brachiaria shoots and with herbicide (NBWH), without Brachiaria shoots and without herbicide (NBNH), and with Brachiaria and without herbicide (WBNH), at four times: 30, 20, 10, and 0 days, preceding the rice sowing. The amount of B. ruziziensis dry matter increased as the management was done closer to the rice sowing date. The WBWH and WBNH managements... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa; No-tillage system; Glyphosate; Cover crop. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015000100015 |
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| Martini,Gustavo; Pedrinho Junior,Aimar Francisco Ferrari; Felici,Guilherme Vargas; Piva,Fausto Monteiro; Durigan,Julio Cezar. |
| Avaliou-se a eficácia do herbicida glifosato potássico, comparado ao sulfosato e ao glifosato amínico, utilizados como padrões comerciais. Os herbicidas foram aplicados em um pomar de laranja da variedade Pêra-rio, infestado por grama-seda (Cynodon dactylon) com aproximadamente 25 cm de altura, em 70% da área. O experimento foi instalado no município de Taiúva-SP, em solo Podzólico Vermelho-Amarelo, distrófico, de textura arenosa, com relevo suave ondulado. Os tratamentos testados foram: glifosato potássico (ZAPP Qi) a 1,05; 2,10 e 2,50 kg e.a./ha, sulfosato (ZAPP) e glifosato amínico (ROUNDUP CS) a 1,98 e 2,16 kg e.a./ha, respectivamente, além da testemunha sem capina. Os herbicidas foram aplicados em pós-emergência da planta daninha, com pulverizador... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glyphosate; Grama-seda; Citros. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452002000300028 |
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| Pádua,Gilda Pizzolante de; Jesus,Adriana Madeira Santos; Fronza,Vanoli; Arantes,Neylson Eustáquio; Zito,Roberto Kazuhiko. |
| The difficulty on identifying, lack of segregation systems and absence of suitable standards for coexistence of non trangenic and transgenic soybean are contributing for contaminations that occur during productive system. The objective of this study was to evaluate the efficiency of two methods for detecting mixtures of seeds genetically modified (GM) into samples of non-GM soybean, in a way that seed lots can be assessed within the standards established by seed legislation. Two sizes of soybean samples (200 and 400 seeds), cv. BRSMG 810C (non-GM) and BRSMG 850GRR (GM), were assessed with four contamination levels (addition of GM seeds, for obtaining 0.0%, 0.5%, 1.0%, and 1.5% contamination), and two detection methods: immunoassay of lateral flux (ILF) and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Glyphosate; Transgenic. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222012000400007 |
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| Silva,Fabiana Mota da; Unêda-Trevisoli,Sandra Helena; Villela,Otávia Tiago; Perecin,Dilermando; Mauro,Antonio Orlando Di. |
| Due to the large increase in the area cultivated with genetically modified soybean in Brazil, it has become necessary to determine methods that are fast and efficient for detecting these cultivars. The aim of this work was to test the efficiency of the toothpick method in the detection of RR soybean plants, as well as to distinguish between cultivars, for sensitivity caused by herbicide. Ten transgenic soybean cultivars, resistant to the active ingredient glyphosate, and ten conventional soybean cultivars were used. Toothpicks soaked in glyphosate were applied to all the plants at stage V6 and evaluations were made at 2, 4, 6, 8 and 10 days after application (DAA). The effects of the glyphosate on the cultivars, and the symptoms of phytotoxicity caused in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Phytotoxicity; Glyphosate; Toothpick method; Herbicide. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902015000200436 |
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| Moraes, P. V.D.; Rossi, P.. |
| The development of agriculture has increased the need for herbicides. However, some changes have favored the use of glyphosate, such as the advent of transgenic crops and aspects related to toxicology, ecotoxicology, ease of handling, effectiveness of control and, especially, the cost-benefit. This review aims to briefly describe the behavior of glyphosate when present in the environment. The activity of both glyphosate and its metabolites may directly or indirectly affect soil organisms and water. Although the use of glyphosate has increased in recent years, more detailed studies of this herbicide under different environmental conditions are important for correct use, minimizing possible environmental damage in case of indiscriminate use of this product. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glyphosate; Resíduo; Ambiente; Água; Solo. |
| Ano: 2011 |
URL: http://e-revista.unioeste.br/index.php/scientiaagraria/article/view/5258 |
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| Costa,Neumárcio Vilanova da; Martins,Dagoberto; Rodella,Roberto Antonio; Costa,Lívia Duarte Neves de Camargo da. |
| The morphological diversity of leaf surface and structures such as trichomes, stomata, cuticle, and waxes that exists among plant species can have great influence on the adherence and deposition of spray droplets, as well as on herbicide absorption. The aim of this research was to study leaf pH and to evaluate wetting areas after applications of solution surfactants on the following aquatic weeds: Enhydra anagallis, Eichhornia crassipes, Heteranthera reniformis, and Typha subulata. The aquatic weeds were grown in reservoirs containing water under open air conditions and their leaf tissues were collected when the plants reached full development (before flowering). The mean leaf pH varied between 5.50 and 7.50; E. anagallis should be pointed out for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aquatic weed; Glyphosate; Surface tension; Wetting. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000300005 |
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| Tillmann,Maria Ângela André; West,Shirlie. |
| Advances in genetic engineering permit the modification of plants to be tolerant to certain herbicides that are usually not selective. For practical and commercial purposes, it is important to be able to detect the presence or absence of these traits in genotypes. The objective of this research was to develop a procedure for identifying genetically modified soybean (Glycine max L. Merr.) with resistance to the herbicide glyphosate. Two studies were conducted based on germination test. In the first study, soybean seeds were pre-imbibed in paper towel with the herbicide solutions, then transferred to moist paper towel for the germination test. In the second study, seeds were placed directly in herbicide solutions in plastic cups and tested for germination... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Transgenic; Germination; Detection; Glyphosate. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000300017 |
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| Zilli,Jerri Édson; Smiderle,Oscar José; Neves,Maria Cristina Prata; Rumjanek,Norma Gouvêa. |
| Este trabalho objetivou avaliar o impacto de herbicidas à base de glyphosate, imazaquin e trifluralin na biomassa microbiana do solo, na comunidade bacteriana associada ao rizoplano de soja e também na nodulação das plantas de soja. As avaliações foram realizadas por um período de 60 dias, em dois sistemas de manejo do solo: semeadura direta na palha (SD) e semeadura convencional (SC), que receberam a aplicação dos herbicidas glyphosate e, imazaquin e trifluralin, respectivamente. Ao longo do período estudado o imazaquin, na área de SD, ocasionou redução da biomassa microbiana e, também alterou o perfil bacteriano analisado por eletroforese em gel com gradiente desnaturante (DGGE) de forma mais intensa, que o glyphosate. Na área de SC não houve efeito... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biomassa Microbiana; Glyphosate; Imazaquin; Trifluralin; DGGE. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672007000200005 |
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| Albrecht, Alfredo Junior Paiola; Pereira, Vinicius Gabriel Caneppele; Souza, Cristian Natalino Zanfrilli de; Zobiole, Luiz Henrique Saes; Albrecht, Leandro Paiola; Adegas, Fernando Storniolo. |
| Fleabane (Conyza spp.) is an important weed in grain production systems and is currently one of the most problematic weeds in Brazil. An important factor related to weeds such as fleabane is the characteristic of herbicide-resistant biotypes developed under selection pressure, with multiple resistance previously detected for Conyza spp. Thus, the aim of this study was to demonstrate the multiple resistance of Conyza sumatrensis to the herbicides paraquat, glyphosate, and chlorimuron. From the F2 seeds of biotypes with suspected resistance to paraquat, glyphosate, and chlorimuron, dose-response greenhouse experiments were conducted for the three herbicides. Herbicides were applied when the plants had 6-8 leaves that were at a height of 8 cm. At the end of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Conyza spp.; Dose-response; Paraquat; Glyphosate; Chlorimuron. Conyza spp.; Dose-response; Paraquat; Glyphosate; Chlorimuron.. |
| Ano: 2020 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/42485 |
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| Martins, Carlos Eduardo Nogueira; Universidade Federal de Santa Maria; Quadros, Fernando Luiz Ferreira de; Universidade Federal de Santa Maria; Araldi, Danieli Furian; Universidade de Cruz Alta; Moojen, Eduardo Londero; Universidade de Cruz ALta; Bandinelli, Duilio Guerra; Instituto Federal Farroupilha; Garagorry, Fábio Cervo; Universidade de Cruz Alta. |
| Objetivou-se avaliar os possíveis efeitos do uso do herbicida e da introdução de espécies de estação fria na dinâmica vegetacional da pastagem natural. Os tratamentos foram: pastagem natural com roçadas anuais (CN); pastagem natural melhorada com introdução de espécies de estação fria e com adubação anual (CNI); idem ao anterior, mas com uma aplicação de glifosato (G1); idem ao anterior, porém com três aplicações de glifosato (G3); idem ao G3, mas com o dobro da adubação anual (GA3). A semeadura de trevo branco, cornichão e azevém anual foi feita a lanço, sendo esta precedida da aplicação do herbicida glifosato. O sistema de pastejo foi o contínuo com lotação variável. A composição botânica observada foi diferente (p < 0,06) entre os tratamentos que não... |
| Tipo: Pesquisa de campo |
Palavras-chave: 5.04.04.02-4 azevém anual; Cornichão; Glifosato; Trevo branco Manejo e Conservação de Pastagens annual ryegrass; Birdsfoot trefoil; Glyphosate; White clover. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/9148 |
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| Zonetti,P. da Costa; Suzuki,L. Sayuri; Bonini,E. Aparecida; Ferrarese,M. L. Lucio; Ferrarese-Filho,Osvaldo. |
| Glyphosate resistant transgenic soybean [Glycine max (L.) Mettill] expresses a glyphosate insensitive EPSPS (5-enolpyruvylshikimate-3-phosphate synthase). This enzyme is involved in important secondary metabolism pathways, including lignin biosynthesis. Thus, differences in lignin content and growth between susceptible (OC14) and glyphosate-resistant soybean may be observed. The objective of this study was to evaluate differences between growth and lignin content of roots in transgenic and OC14 soybean cultivated at high temperatures. Seeds from the OC14 soybean and its transgenic cultivar, CD213RR, were germinated at 25, 27.5, 30 and 32.5 °C. After 3 d, seedlings were cultivated in Hoagland half-strength nutrient solution during 12 h photoperiods and at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glyphosate; Abiotic stress; Glycine max; Plants; Climatic changes. |
| Ano: 2012 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952012000600003 |
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| Cruz,Lútecia Hiera da; Santana,Henrique de; Zaia,Cássia Thaïs Bussamra Vieira; Zaia,Dimas Augusto Morozin. |
| This work showed that the adsorption of glyphosate (GPS) depends on surface area for clays and amount of clays and CEC for soils. Organic matter (OM) had a secondary role in the adsorption of GPS on soils. The adsorption of GPS on soils from Londrina and Floraí counties and clays (montmorillonite, kaolinite) decreased when pH increased, however, for bentonite clay and soil from Tibagi county was kept constant. For the soils, the competitive adsorption between GPS and phosphate showed that displace of GPS by phosphate was related to the amount of clays, CEC and pH. GPS was not easily displaced by phosphate on the clays. The FT-IR spectra of the soils and clays showed that soil from Londrina resembled kaolinite. Thus, this could explain the results of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glyphosate; Adsorption; Clays; Soils. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000300004 |
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| Lima,Ilana Schneider; Baumeier,Nicole Carmo; Rosa,Rosimeire Takaki; Campelo,Patrícia Maria Stuelp; Rosa,Edvaldo Antonio Ribeiro. |
| This study evaluated the impact of different concentrations of glyphosate (Rondup®) on planktonic and biofilm growth of P. aeruginosa. Aerobic and anaerobic cultures of P. aeruginosa ATCC®15442 inoculated in MHB + glyphosate (0.845 ppm, 1.690 ppm, 8.45 ppm, 16.90 ppm, 84.50 ppm, 169 ppm, 845 ppm, and 1690 ppm) and cultured in normoxia and anoxia, following their OD560nm every hour for 24 h. Biofilms of adapted cells were formed in the presence of glyphosate (0.845 to 1690 ppm) in normoxia and anoxia for 36 h. Glyphosate at concentrations higher than 84.5 ppm reduces the cell density of planktonic aerobic cultures (p < 0.05). However, these same concentrations favor the planktonic anaerobic growth (p < 0.05). On the other hand, the herbicide favors a... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pseudomonas aeruginosa; Glyphosate; Growth; Biofilm. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822014000300029 |
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| Upadhyay,Jyoti; Rana,Mahendra; Bisht,Satpal Singh; Rana,Amita; Durgapal,Sumit; Juyal,Vijay. |
| Experiments were conducted to investigate the effects on health of pregnant female rats exposed to pesticides glyphosate and carbendazim. Glyphosate is used as herbicide and carbendazim as a fungicide; all are commercially available readily for various agricultural and domestic purposes. The hypothesis tested in this investigation is that pesticide exposure during pregnancy causes changes in biomarker responses like serum glucose level, total protein, total cholesterol, triglycerides, SGOT, SGPT, and billirubin level. Significant changes were observed in all above biomarker responses, when compared with the reference. Histopathology of skin and kidney of rat neonates showed marked damage. Degenerative changes and vacuolization with eroded capsule were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glyphosate; Carbendazim Biomarker responses Biomarkers/ analysis Pesticide exposure/histopathology Newborn/ histopathology Herbicides/ toxicity. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502019000100507 |
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| Registros recuperados: 84 | |
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