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| Registros recuperados: 136 | |
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| CARVALHO,A.R.J.; MAIA,V.M.; ASPIAZÚ,I.; PEGORARO,R.F.; OLIVEIRA,F.S. |
| ABSTRACT Diuron is a widely used herbicide on pineapple cultivations. However, its application is recommended only for the implementation of the crop. The objective of this work was to evaluate the gas exchanges of four pineapple cultivars submitted to the application of the herbicide diuron at their reproductive stage. The experiment was conducted with the IAC Fantástico, Vitória, MD2 and Pérola pineapple cultivars using the active ingredient diuron at a dose of 7.5 mL L-1. Measurements of CO2 assimilation rate, stomatal conductance, transpiration, vapor pressure deficit and water use efficiency were carried out weekly, by the hour, on two plants per cultivar, over a 24 hour period. These determinations were carried out two days before the application of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ananas comosus var. comosus; Herbicide; Gas exchange; Weeds; Chemical control. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100316 |
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| Guimarães,F.P; Aguiar,R; Karam,D; Oliveira,J.A; Silva,J.A.A; Santos,C.L; Sant'anna-Santos,B.F; Lizieri-Santos,C. |
| The potential of three macrophytes, Azolla caroliniana, Salvinia minima, and Lemna gibba was assessed in this study to select plants for use in environmental remediation contaminated with atrazine. Experiments were carried out in a greenhouse over six days in pots containing Hoagland 0.25 strength nutritive solution at the following atrazine concentrations: 0; 0.01; 0.1; 1.0; 10.0 mg L-1. Decrease in biomass accumulation was observed in the three macrophytes, as well as toxic effects evidenced by the symptomatology developed by the plants which caused their deaths. The chlorosis and necrosis allowed to observe in the plants the high sensitivity of the three species to the herbicide. Plants presented low potential for removal of atrazine in solution when... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Azolla caroliniana; Salvinia minima; Lemna gibba; Herbicide; Bioremediation. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582011000500022 |
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| Garagorry, Fábio Cervo; UFSM; Quadros, Fernando Luiz Ferreira de; UFSM; Travi, Magdalena Reschke Lajús; UFSM; Bandinelli, Duílio Guerra; UFSM; Fontoura Júnior, José Acélio; UFSM; Martins, Carlos Eduardo Nogueira; UFSM. |
| Objetivou-se avaliar a produção animal de novilhos e vegetal de campo natural e de campo natural sobre-semeado com azevém (Lolium multiflorum), trevo branco (Trifolium repens) e cornichão (Lotus corniculatus) com e sem a utilização do herbicida glyphosate. Os tratamentos foram: CN – campo nativo, com roçada anual; CNI – campo nativo com sobre-semeadura, adubação e roçada anual; G1 – Idem ao CNI com aplicação de herbicida no primeiro ano; G3 – idem ao G1 com supressão da vegetação natural com herbicida no segundo e terceiro ano; GA3 – Idem ao G3 com adubação duplicada nos três anos. O delineamento experimental foi blocos completamente casualizados com duas repetições. Os resultados apresentados são do terceiro ano de avaliação. Para ganho médio diário,... |
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Palavras-chave: 5.04.04.00-8 Pastagem e Forragicultura introdução de espécies; Herbicida; Adubação; Pastagem natural; Ganho por área; Sobre-semeadura. species introduction; Herbicide; Fertilization; Natural pasture; Gain per area; Sod seeding. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/4674 |
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| SCHMITZ,M.F.; ZANDONÁ,R.R.; VARGAS,A.A.M.; GARCIA,J.R.; TUNES,L.V.M.; AGOSTINETTO,D.. |
| ABSTRACT: The commercialization of ryegrass seeds with the presence of resistant biotypes is a serious issue that increses the dispersion of resistance to new areas without this problem. Therefore, this study aimed to develop a quick test to detect susceptible and resistant seeds to the glyphosate herbicide in order to identify contaminated seed lots with glyphosate resistance. Three experiments were carried out, one in greenhouse and the other two in the seed laboratory. First, the resistance factor (RF) was determined by a dose-response curve experiment in biotypes suspected to be resistant and susceptible to glyphosate. Then, the germination test was conducted with the selected biotypes under increasing glyphosate rates (0, 3.5, 6.9, 13.9, 27.8, 55.5,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lolium multiflorum; Germination; Herbicide; Methodology. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100243 |
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| CONCENCO, G.; MARQUES, R. F.; SANTOS, S. A. dos; PALHARINI, W. G.; ALVES, M. E. dos; MELO, T. S.. |
| A rasteirinha (Hybanthus parviflorus [Mutis ex L.f.] Baill) vem ganhando importância agrícola por causa de sua tolerância a herbicidas. Não existem recomendações e nem herbicidas registrados e indicados no Brasil para o controle dessa espécie. O objetivo deste estudo, Portanto, foi desenvolver alternativas de manejo para essa planta daninha. O trabalho foi composto por dois experimentos idênticos, que foram instalados em duas épocas, sendo o primeiro entre junho e setembro de 2013 e o segundo entre outubro de 2013 e janeiro de 2014. As unidades experimentais foram compostas por baldes de plástico com 4 litros de capacidade, preenchidos com solo peneirado e adubado, e dez mudas foram transplantadas para cada balde, sendo mantidas sete plantas por unidade... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Planta daninha; Controle; Weed; Herbicide; Control.; Herbicida.. |
| Ano: 2014 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/995528 |
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| MATTE,W.D.; CAVALIERI,S.D.; PEREIRA,C.S.; IKEDA,F.S.; COSTA,W.B.. |
| ABSTRACT: The application of alternative herbicides to replace glyphosate can affect the succession cropping due to the persistence in the soil. The aim of this work was to evaluate the residual activity of diclosulam applied to a pre-emergence soybean crop on a cotton plant grown in succession. The present study used a randomized complete block design with five replicates and seven doses of diclosulam (0, 2.19, 4.38, 8.75, 17.5, 35 and 70 g a.i. ha-1). The cotton was sown 112 days after application of the herbicide, with accumulated rainfall of 637 mm during the soybean cycle. Variables related to photosynthetic characteristics, phytointoxication, growth, components of production and productivity were evaluated in both crops. Diclosulam did not affect the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carryover; Glycine max; Gossypium hirsutum; Herbicide; Persistence. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100216 |
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| MATTE,W.D.; CAVALIERI,S.D.; PEREIRA,C.S.; IKEDA,F.S.; POLTRONIERI,F.. |
| ABSTRACT: In the current scenario of resistance of weeds to glyphosate in grain and fiber production systems, imidazolinone-resistant soybean is shown as an option in the rotation of biotechnology events and herbicide action mechanisms through the application of [imazapic+imazapyr]. However, due to its persistence in the soil, the herbicide may harm the subsequent crop. The objective of this work was to evaluate the residual activity of the herbicide [imazapic+imazapyr] applied in pre-emergence in soybean cultivation on cotton in succession. The experimental design was a randomized block design with five replicates, using seven concentrations (0; 6.25; 12.5; 25; 50; 100 and 200%) of the recommended dosage of the herbicide [imazapic+imazapyr] ([78,75+26,25]... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Gossypium hirsutum; Carryover; Herbicide; Resistance. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100345 |
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| MATTE,W.D.; CAVALIERI,S.D.; PEREIRA,C.S.; IKEDA,F.S.; SHENG,L.Y.. |
| ABSTRACT: Weed resistance to glyphosate in agricultural production systems has led to the need of applying herbicides with different mechanisms of action. However, the persistence of these herbicides in the soil can harm the subsequent crop. This study aimed to assess the effect of the residual activity of the herbicide sulfentrazone applied in pre-emergence of soybean on cotton in succession. The experimental design was a randomized block design with five replications, with seven doses of sulfentrazone (0, 37.5, 75, 150, 300, 600, and 1,200 g ha-1). Cotton was sown at 112 days after herbicide application (DAA), with an accumulated precipitation of 637 mm during soybean cycle. Variables related to photosynthetic characteristics, phytointoxication,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Gossypium hirsutum; Carryover; Herbicide; Persistence. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100242 |
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| COSTA,N.V.; MORATELLI,G.; FERREIRA,S.D.; SALVALAGGIO,A.C.; RODRIGUES-COSTA,A.C.P.. |
| ABSTRACT: The intensive use of glyphosate can select resistant populations. This study aimed at evaluating the occurrence of glyphosate resistance in populations of D. insularis in agricultural areas. Three experiments were conducted in randomized block experimental design with four replications. The Resistance Degree (RD) was determined by a dose-response curve in the evaluated populations: Experiment 2012, São Camilo (R01 and R02) and Palotina (R03, R04 and S05-susceptible); Experiment 2013 Palotina (R06 and R12), Katueté/Paraguay (R07), Toledo (R08 and R10), Cascavel (R09), São Miguel do Iguaçu (R11), Dom Eliseu/Pará (S13-susceptible); Experiment 2015 Nova Aurora (R14), Iracema do Oeste (R15 and R16), Jesuitas (R17 and R18), Tupãssi (R19), Jotaesse... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Sourgrass; Agricultural practices; Weed; Herbicide. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100330 |
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| Albrecht,Leandro Paiola; Barbosa,André Prechlak; Silva,André Felipe Moreira; Mendes,Matheus Akiyama; Albrecht,Alfredo Júnior Paiola; Ávila,Marizangela Rizzatti. |
| In consequence of several studies and speculations concerning the issue of RR transgenic soybean after the application of glyphosate, additional scientific investigations became necessary to clarify the actual viability of the product use when applied in different developmental stages of the soybean crop. Therefore, this study was aimed to evaluate the physiological quality as well as seed health quality of RR soybean subjected to application of the herbicide glyphosate in different phonological stages of the transgenic soybean, cultivar CD 219RR. For this, an experiment with a complete block experimental design with treatments randomly distributed within the block, with four replications, was carried out. The assessed treatments were foliar sprayings of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Transgenic seed; Performance; Herbicide. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222012000300003 |
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| Martins,Paula Fabiane; Martinez,Camila Ortiz; Carvalho,Giselle de; Carneiro,Paulo Irajara Borba; Azevedo,Ricardo Antunes; Pileggi,Sônia Alvim Veiga; Melo,Itamar Soares de; Pileggi,Marcos. |
| The aim of this work was to study herbicide degradation through selected microorganisms from humus and soil subjected to different plantation systems. The following bacterial species were identified: Klebsiella pneumoniae pneumoniae GC s.B strain 1, Pseudomonas alcaligenes, Enterobacter aerogenes GC s.A and Klebsiella pneumoniae pneumoniae GC s.B strain 2. Growth studies yet suggested the possibility of a very long lag phase. Although, culture with the herbicide presented biofilm formation and there were color changes in the herbicide that could have interfered with the espectrophotometry readings. After 5 days of incubation at 35ºC, the difference in the concentration of herbicide was 14.42% on average and after 10 days, 35.01%. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Bioremediation; Biodegradation; S-Metolachlor; Herbicide. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000100019 |
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| CARNEIRO,G.D.O. PESSOA; SILVA,G.S.; BARBOSA,A.R.; SILVA,D.V.; REIS,M.R.. |
| ABSTRACT The initial slow growth and short stature of carrot can allow that weeds settle in crop areas, requiring the management of these plants for productivity not to decrease. Nevertheless, weeds control has been difficult because there are few herbicides available for weeds control in postemergence of carrots. Two experiments in the field were carried out to evaluate selectivity of metribuzin applied in postemergence of carrots. A experimental randomized block design was utilized with four repetitions. Treatments consisted of metribuzin doses (0, 144, 288, 432, 576, 720, 960 and 1,200 g ha-1), applied in postemergence of carrots of the Nantes variety. Roots productivity was evaluated and percentage of commercial roots and no-commercial roots was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Daucus carota; Chemical control; Herbicide. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100240 |
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| Santos,Tatiele Pereira dos; Menezes,Claubert Wagner Guimarães de; Batista,Carlos Henrique; Brito,Eliane Souza Gomes; Tavares,Wagner de Souza; Zanuncio,José Cola. |
| ABSTRACT Trichogramma pretiosum Riley, 1879 (Hymenoptera: Trichogrammatidae) is an egg parasitoid of lepidopteran pests in corn, Zea mays L. (Poaceae), in Brazil. Chemical products used in agriculture can be toxic to this biocontrol agent. The objective of the present study was to evaluate the longevity, parasitism and emergence of T. pretiosum parasitizing Mediterranean flour moth, Anagasta kuehniella Zeller, 1879 (Lepidoptera: Pyralidae), eggs treated with herbicide solutions with the active ingredients (chemical group) atrazine (triazines), paraquat dichloride (bipyridylium) and nicosulfuron (sulfonylurea). Pure distilled water was used as a negative control, and a solution of a product with λ-cyhalothrin + thiamethoxam (pyrethroid + neonicotinoid,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biocontrol agent; Emergence; Herbicide; Longevity; Parasitism.. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542019000100241 |
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| Alves,Pedro Luís da Costa Aguiar; Marques Júnior,José; Ferraudo,Antonio Sergio. |
| In the soil, herbicides are submitted to absorption, leaching and degradation by physical, chemical and biological processes or absorbed by plants. All these processes are dependent on soil class and weather conditions and affect the product efficiency on weed control. The objective of this work was to investigate the influence of soil attributes on sulfentrazone efficiency for controlling purple nutsedge (Cyperus rotundus L. ). Soil samples from LVAd (Typic Haplustox), LVd, LVdf and LVef (Typic Haplustox and Typic Eutrustox), NVe (Rhodic Kandiustalf), and LVd (Typic Haplustox) were collected under two crop conditions aiming to have different clay, Fe oxides, and organic matter contents. The soil samples were submitted to granulometric, chemical and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Herbicide; Adsorption; Fe oxide; Classes of soils. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000300014 |
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| SOUSA,G.V.; PEREIRA,G.A.M.; TEIXEIRA,M.F.F.; FARIA,A.T.; PAIVA,M.C.G.; SILVA,A.A.. |
| ABSTRACT: In Brazil, sugarcane is grown in large areas. Weed control in sugarcane fields is done by chemical method, since it is more efficient and less expensive. In this method, herbicides that persist in the environment for long periods are used, among which there are hexazinone and diuron, which are applied in mixtures marketed by the industry. This research evaluated the sorption and desorption of hexazinone and diuron applied alone and in mixture, in two samples of Red-Yellow Latosols (LVAG and LVAV) and a Organosol (OR), with and without manure. Sorption isotherms were built using the batch equilibrium method and the identification and quantification of herbicides was obtained through a high-performance liquid chromatography (HPLC) with UV-Vis... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Herbicide; Behavior in soil; Environmental impact. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100293 |
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| Registros recuperados: 136 | |
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