Consulta: subjectFacets:"Herbicides"
Registros recuperados: 138
Data/hora: 10/06/2024 17:01:46

Genetically Modified Crops and the Agroecosystem: Comments on "Genetically Modified Crops: Risks and Promise" by Gordon Conway
Provedor de dados: 7
Autores: Pimentel, David; Cornell University; dp18@cornell.edu.
Tipo: Peer-Reviewed Reports
Palavras-chave: Bacillus thuringiensis (B.t.); GM crops; Agriculture; Biotechnology; Economics; Ecosystems; Genetic engineering; Herbicides.
Ano: 2000

Eucalyptus ESTs associated with resistance to herbicide inhibitors of aromatic and branched-chain amino acid synthesis
Provedor de dados: 74
Autores: Velini,Edivaldo Domingues; Trindade,Maria Lúcia Bueno; Alves,Elza; Catâneo,Ana Catarina; Marino,Celso Luis; Maia,Ivan de Godoy; Mori,Edson Seizo; Furtado,Edson Luiz; Guerrini,Iraê Amaral; Wilcken,Carlos Frederico.
Herbicides inhibit enzymatic systems of plants. Acetolactate synthase (ALS, EC = 4.1.3.18) and 5-enolpyruvylshikimate-3-phosphate synthase (EPSPS, EC 2.5.1.19) are key enzymes for herbicide action. Hundreds of compounds inhibit ALS. This enzyme is highly variable, enabling the selective control of weeds in a number of crops. Glyphosate, the only commercial herbicide inhibiting EPSPS is widely used for non-selective control of weeds in many crops. Recently, transgenic crops resistant to glyphosate were developed and have been used by farmers. The aim of this study was the data mining of eucalypt expressed sequence tags (ESTs) in the FORESTs Genome Project database (&lt;A HREF="https://forests.esalq.usp.br"&gt;https://forests.esalq.usp.br&lt;/A&gt;) related...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eucalyptus; Herbicides; ALS; EPSPS.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000400012

Identificação e manejo de resistência a herbicidas.
Provedor de dados: 14
Autores: VARGAS, L.; GAZZIERO, D. L. P.; KARAM, D.
Fatores responsáveis por aplicações ineficientes de herbicidas. Indicações de prevenção e manejo da resistência. Plantas daninhas resistentes ao glifosato no Brasil. Risco de evolução da resistência de acordo com as práticas de cultivo.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Herbicida; Herbicides.
Ano: 2011
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/907141

Plantas daninhas: importância e controle.
Provedor de dados: 14
Autores: BELTRAO, N. E. de M.; MELHORANCA, A. L.
Plantas daninhas: conceito, tipos e ecologia; Periodo critico de competicao entre a cultura do algodoeiro e as plantas daninhas; Metodos de controle.
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Algodão; Controle Químico; Cerrado; Erva Daninha; Gossypium Hirsutum; Herbicida.; Herbicides; Cotton; Chemical control; Weeds.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/241155

Seletividade de herbicidas para feijão-caupi (Vigna unguiculata L. Walp.).
Provedor de dados: 14
Autores: OLIVEIRA, M. F. de; VIVIAN, R.; KARAM, D.; SILVA, A. F. da.
Esta publicação descreve a seletividade de herbicidas aplicados em pré e pós-emergência para as cultivares de feijão-caupi BRS Marataoã e BRS Guariba.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: BRS Marataoã; BRS Guariba; Herbicida; Variedade; Herbicides.
Ano: 2017
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1078726

Controle do capim gengibre na cultura da seringueira.
Provedor de dados: 14
Autores: MORAES, V. H. F.
Das diferentes doses e modos de aplicacao de dois herbicidas (Roundup e Dowpon-S) capazes de se translocarem para os rizomas apos absorcao via foliar, o melhor resultado, do ponto de vista da eficiencia do tratamento, foi obtido com uma so aplicacao de Roundup, conseguindo-se a erradicacao total do capim gengibre.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Paspalum martimum; Brasil; Amazonas; Rubber tree; Species.; Capim Gengibre; Controle Químico; Espécie; Erva Daninha; Herbicida; Hevea; Seringueira.; Chemical control; Herbicides; Weeds.
Ano: 1980
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/665323

Resistência de plantas daninhas: tabela de classificação dos herbicidas.
Provedor de dados: 14
Autores: GAZZIERO, D. L. P.; PURÍSSIMO, C.; BRIGHENTI, A. M.; VOLL, E.; PRETE, C. E. C.; ADEGAS, F. S.
Herbicidas. Resistência. Estratégias para a prevenção da resistência. Mecanismo de ação. Classificação. Tabela de classificação dos herbicidas. Relação mecanismo de ação x marca comercial.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Herbicida; Erva daninha; Herbicides; Weeds; Herbicide-resistant weeds.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/462076

Manejo e controle da buva resistente ao glifosato.
Provedor de dados: 14
Autores: VARGAS, L.; GAZZIERO, D. L. P.; KARAM, D.
Fatores responsáveis por aplicações ineficientes de herbicidas. Alternativas de herbicidas para uso em um programa de controle químico de buva resistente e sensível ao glifosato. Indicações de prevenção e manejo da resistência.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Erva daninha; Herbicida; Weeds; Herbicides.
Ano: 2011
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/907090

Aplicação localizada de herbicidas.
Provedor de dados: 14
Autores: SHIRATSUCHI, L. S.; CHRISTOFFOLETI, P. J.; FONTES, J. R. A.
ABSTRACT: Curent interest in site-specific weed control considering the weed spatial variability is increasing nowadays, when economical and environmental aspects are considered. This paper reviews the patch spraying methods for herbicides application systems regarding the economical and technical aspects. Using this new approach high herbicides savings are possible, maintaining the efficacy of chemical control using the site-specific herbicide applications, and consequently reducing the environmental impact of the broadcast application of herbicides.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Planta daninha; Precision farming; Agricultural chemicals.; Agricultura de Precisão; Defensivo; Controle Químico; Herbicida; Pulverização.; Chemical control; Herbicides; Spraying; Weeds.
Ano: 2003
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/568141

Movimento vertical do herbicida hexazinone em latossolo vermelho distrófico do córrego Espraiado, Ribeirão Preto, SP, cultivado com cana-de-açúcar - simulações considerando dados local e default.
Provedor de dados: 14
Autores: PESSOA, M. C. P. Y.; QUEIROZ, S. C. do N. de; FERRACINI, V. L.; GOMES, M. A. F.; SOUZA, M. D. de.
Este trabalho utilizou técnica de simulação computacional para analisar a movimentação vertical do herbicida hexazinone, considerando dados médios default de literatura e dados calculados para suas meia-vida no solo (t½) e coeficiente de adsorção ao carbono orgânico do solo (Koc) em Latossolo Vermelho Distrófico (LVd) do Córrego do Espraiado, Ribeirão Preto-SP. Informações sobre o solo avaliado, climáticas e os dados da cultura de cana-deaçúcar foram utilizadas no simulador CMLS-94. O cenário base de simulação considerou um período de um ano e quatro meses, apresentando data de corte da cultura no mês de agosto e a aplicação de hexazinone, um mês após o corte, na dose de 0,40 kg ha-1, a qual é encontrada em produto comercial utilizado no local. As...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Simulação de sistemas; Aquífero Guarani; Movimento vertical.; Herbicida; Qualidade da água; Simulação; Herbicides; Water quality; Hexazinone.
Ano: 2009
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/83063

Época de controle químico do mal-das-folhas em viveiro de seringueira no Estado de Rondônia.
Provedor de dados: 14
Autores: LIMA, M. I. P. M.; LISBOA, S. de M.; JUNQUEIRA, N. T. V.
Objetivou-se estudar a melhor epoca (periodo) de controle quimico do mal-das-folhas em viveiro de seringueira, visando reduzir o numero de pulverizacoes e, consequentemente, a quantidade de fungicida sem causar prejuizos a producao de mudas. Os resultados indicaram uma tendencia de que se podera reduzir as pulverizacoes na etapa de producao de mudas, o que diminuira os custos de producao (fungicida, mao-de-obra, de preciacao do pulverizador) bem como a poluicao do meio ambiente e a eliminacao dos inimigos naturais de pragas e doencas.
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Mal-das-folhas; Brasil; Rondonia; Rubber tree; Species; Stocking plant; Fungal diseases; South American leaf blight; SALB.; Controle Químico; Espécie; Doença; Fungo; Folha; Hevea; Herbicida; Microcyclus Ulei; Muda; Seringueira; Viveiro.; Herbicides; Chemical control; Leaves.
Ano: 1987
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/665283

As plantas daninhas e a resistência aos herbicidas.
Provedor de dados: 14
Autores: GAZZIERO, D. L. P.; PURÍSSIMO, C.; ADEGAS, F. S.; VOLL, E.; BRIGHENTI, A. M.; PRETE, C. E. C.
O que é? Como ocorre? Classificação dos herbicidas. Tabela periódica dos herbicidas: nome comum. Tabela periódica dos herbicidas: marca comercial. Mecanismo de ação. Manejo e Prevenção da resistência.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Plantas daninhas; Herbicidas; Erva daninha; Herbicida; Weeds; Herbicides.
Ano: 2002
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/459736

Efeitos de herbicidas na ocorrencia de estirpes de Bradyhizobium japonicum em nodulos de soja cultivada em solos do cerrado.
Provedor de dados: 14
Autores: MENDES, I. C.; PERES, J. R. R.; VARGAS, M. A. T.; SUHET, A. R.
bitstream/item/102154/1/pesq-41.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Bradyrhizobium Japonicum; Cerrado; Glycine Max; Herbicida; Soja; Solo.; Herbicides; Soybeans.; Soil.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/549380

Efeito protetor ("savener") de inseticidas contra a fitotoxicidade causada pelo herbicida clomazone no algodoeiro.
Provedor de dados: 14
Autores: ÁVILA, C. J.; MELHORANÇA, A. L.; LAMAS, F. M.; ANDRADE, P. J. M.; GOMEZ, S. A.
bitstream/item/65615/1/Cot30-2000.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Brasil; Mato Grosso do Sul; Dourados.; Algodão; Defesa Vegetal; Cerrado; Fitotoxicidade; Herbicida; Inseticida.; Gossypium Hirsutum; Herbicides; Brazil; Cotton; Insecticides; Plant protection.; Phytotoxicity.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/243677

Avaliação da degradação do herbicida Diuron utilizando extração em fase sólida.
Provedor de dados: 14
Autores: ROQUE, M. R. de A.; FERRACINI, V. L.; MELO, I. S. de.
O diuron 3-(3-4-diclorofenil) 1,1-dimetilureia é um herbicida comercializado em vários países, entre eles Brasil e Estados Unidos. Este trabalho avaliou a degradação deste herbicida, em meio de cultura. Para quantificar a degradação foi utilizado um método de extração em fase solida (SPE). A taxa de recuperação do diuron em SPE foi de 84,5%. Uma linguagem de Acinetobacter baumannii (D12-12) apresentou os melhores resultados, com uma taxa de degradação de 14,4% e 13% na concentração de 20 e 40 ug ml-1, respectivamente. A linhagem D16-12 de Acinetobacter baumannii apresentou proporcionalidade na taxa de degradação em funcao da concentração do diuron..
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Degradação química; Herbicida; Análise química; Extração; Bactéria; Herbicides; Chemical degradation; Acinetobacter baumannii; Solid phase extraction.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/13141

Estudos de simulação da movimentação vertical de herbicidas em solos com cana-de-açúcar na microbacia do córrego Espraiado Ribeirão Preto, SP.
Provedor de dados: 14
Autores: 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

Controle de plantas daninhas na cultura da seringueira.
Provedor de dados: 14
Autores: PEREIRA, A. V.; SILVA, J. B. da; PEREIRA, E. B. C.
Esta publicacao tem por objetivo reunir as informacoes disponiveis na literatura sobre o controle de plantas daninhas na cultura da seringueira, de modo a facilitar a consulta por produtores e tecnicos que trabalham com a cultura e servir como referencial para pesquisas futuras nessa area. Sao discutidos os principais metodos de controle de plantas daninhas, com maior enfase no controle quimico, incluindo as informacoes mais importantes para o uso racional de herbicidas. O potencial de utilizacao de herbicidas na heveicultura e discutido em funcao do modo de acao e translocacao na planta, grupo quimico a que pertencem, propriedades fisico-quimicas, toxicidade e poluicao ambiental. Alem dos herbicidas pesquisados recomendados e registrado para a cultura,...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Planta daninha; Rubber crops.; Cerrado; Hevea Brasiliensis; Herbicida; Seringueira.; Herbicides; Weed control.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/546130

Controle de plantas daninhas com herbicidas aplicados via herbigacao, na cultura do feijao, em plantios direto e convencional.
Provedor de dados: 14
Autores: FONTES, J. R. A.; SILVA, A. A. da; VIEIRA, R. F.; RAMOS, M. M.
bitstream/CPAC-2009/24717/1/doc_55.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Planta daninha; Zero tillage; Herbigation.; Controle Químico; Feijão; Herbicida; Phaseolus Vulgaris; Plantio Direto; Solo.; Herbicides; Beans; Chemical control; Conventional tillage; Fomesafen; Metolachlor; Soil; Weed control; Weeds.
Ano: 2002
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/546461

Controle dos rebrotamentos das soqueiras do algodoeiro herbáceo em plantio direto no cerrado.
Provedor de dados: 14
Autores: CORREA, J. C.; AGUIAR, J. L. P. de.
RESUMO: O trabalho foi realizado com o objetivo de avaliar a eficácia e a viabilidade econômica do uso de herbicidas para o controle dos rebrotamentos das soqueiras do algodoeiro herbáceo (Gossypium hirsutum L. r. latifolium Hutch) no sistema de plantio direto no Cerrado. O ensaio foi conduzido em duas épocas depois do corte do algodoeiro. Na primeira época (53 dias após o corte), foram aplicadas doses dos herbicidas: glyphosate (480g/litro do sal de isopropilamina), 2,4 D (806g/litro do sal dimetilamina do ácido 2,4D diclorofenoxiacético) e mistura dos dois ingredientes. Na segunda (161 dias após o corte), foram aplicadas doses de herbicidas e, 10 dias depois da aplicação, os rebrotamentos foram cortados. Nas áreas correspondentes às duas épocas, foram...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Planta daninha; Production system.; Algodão; Cerrado; Controle Químico; Gossypium Hirsutum; Herbicida; Rebrota; Soca.; Sistema de Produção; Herbicides; Chemical control; Cotton; Regrowth; Ratooning; Weeds.
Ano: 2004
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/563883

Weed Management in Sprinkler-Irrigated Rice: Experiences from Southern Brazil.
Provedor de dados: 14
Autores: ANDRES, A.; THEISEN, G.; TELÓ G. M.; CONCENCO, G.; PARFITT, J. M. B.; GALON, L.; MARTINS, M. B.
bitstream/item/165131/1/Germani-Andres-Intech-Publicado.pdf
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Management strategies; Needle point.; Herbicides; Weed control.
Ano: 2017
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1077448

Efeitos de herbicidas na nodulacao da soja cultivada em solo de cerrado.
Provedor de dados: 14
Autores: MENDES, I. C.; PERES, J. R. R.; SUHET, A. R.; VARGAS, M. A. T.
bitstream/item/102156/1/pesq-42.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Root nodulation.; Cerrado; Herbicida; Glycine Max; Nodulação; Soja; Solo.; Herbicides; Soybeans.; Soil.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/549381

Manejo de plantas daninhas na safrinha: banco de sementes e produção de soja (2009).
Provedor de dados: 14
Autores: PIRES, N. L.; IKEDA, F. S.; MARCHI, G.; MARCHI, E. C. S.; GAZZIERO, D. L. P.
bitstream/item/78259/1/p2009-072.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Planta daninha.; Glycine Max; Herbicida; Soja.; Herbicides; Soybeans; Weeds.
Ano: 2009
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/747810

Developmental effects on sulfentrazone exposed rats.
Provedor de dados: 14
Autores: CASTRO, V. L. S. S. de; DESTEFANI, C. R.; DINIZ, C. A. R.; POLI, P.
bitstream/item/125259/1/2007FD03.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Embriotoxicity.; Herbicida; Toxidez; Cobaia; Rato; Prenhez; Herbicides; Rats.
Ano: 2007
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/15995

Resumos...
Provedor de dados: 14
Autores: ENCONTRO DE PRODUÇÃO CIENTÍFICA DA EMBRAPA ALGODÃO, 28., 2021, Campina Grande, PB.
Formar pessoas capazes de buscar conhecimentos por meio da pesquisa e saber utilizá-los em benefício da sociedade. Este é um dos grandes desafios que resume a importância do Programa Institucional de Bolsas de Iniciação Científica do Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq/Pibic) para estudantes de graduação nas universidades, em parceria com institutos de pesquisa. É dentro desta perspectiva que o Encontro de Produção Científica (EPC) se insere como uma etapa obrigatória do processo formal de avaliação dos bolsistas do Programa, enquanto orientandos dos pesquisadores da Embrapa Algodão. Anualmente, o EPC proporciona a estudantes iniciantes na pesquisa a participação em um evento de natureza científica, em que são apresentados...
Tipo: Anais e Proceedings de eventos
Palavras-chave: Algodão; Pesquisa Agrícola; Agricultura; Tecnologia; Controle Químico; Herbicida; Soja; Milho; Cotton; Research; Chemical control; No-tillage; Soybeans; Biotechnology; Herbicides; Agriculture.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1138090

Controle eficiente de plantas daninhas.
Provedor de dados: 14
Autores: OLIVEIRA, M. F. de; VIVIAN, R.
bitstream/item/53632/1/Controle-eficiente.pdf
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Planta daninha; Herbicida; Weeds; Herbicides.
Ano: 2012
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/914708

Manejo de plantas daninhas na safrinha: banco de sementes e produção de soja.
Provedor de dados: 14
Autores: PIRES, N. L.; IKEDA, F. S.; MARCHI, G.; MARCHI, E. C. S.; GAZZIERO, D. L. P.
bitstream/CPAC-2010/31559/1/bolpd-260.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Planta daninha.; Herbicida.; Weeds; Herbicides.
Ano: 2009
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/697416

Praticas simples para evitar deriva de herbicida em maracujazeiro.
Provedor de dados: 14
Autores: JUNQUEIRA, N. T. V.; FIALHO, J. de F.; PEREIRA, A. V.
bitstream/item/116938/1/rectec-19.pdf
Tipo: Recomendação Técnica (INFOTECA-E)
Palavras-chave: Planta daninha.; Cerrado; Herbicida; Maracujá; Passiflora Edulis.; Herbicides; Passion fruits; Weed control.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/563924

Eficiência de herbicidas no controle de gramíneas em seringueira.
Provedor de dados: 14
Autores: AZEVEDO, D. M. P. de; ROMAN, E. S.; LISBOA, S. de M.
Em Rondônia, capim-amargoso (Digitaria insularis (L.) Mez ex Ekman), capim-colchão (Digitaria horizontalis Willd.), capim-milhã (Digitaria ciliaris (Retz.) Koel), capim pé-de-galinha (Eleusine indica, (L.) Gaertn) e capim rabo-de-burro (Andropogon bicornis L.), são ervas daninhas muito freqüentes em cultivos de seringueira, o que justifica a realização de trabalhos específicos para seu controle. O objetivo deste trabalho foi avaliar e comparar nas condições de campo, a eficácia de três herbicidas pós-emergentes no controle de gramíneas importantes em cultivo de seringueira em Rondônia.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Ruber tree; Ariquemes (RO); Ouro Preto do Oeste (RO); Rondônia; Amazônia Ocidental; Western Amazon.; Seringueira; Hevea Brasiliensis; Erva Daninha; Herbicida; Controle Químico; Pós-Emergência.; Chemical control; Herbicides; Postemergent weed control.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/708860

Impacto econômico da resistência de plantas daninhas a herbicidas no Brasil.
Provedor de dados: 14
Autores: ADEGAS, F. S.; VARGAS, L.; GAZZIERO, D. L. P.; KARAM, D.; SILVA, A. F. da; AGOSTINETTO, D.
bitstream/item/162704/1/CT132-OL.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Erva daninha; Herbicida; Weeds; Herbicides.
Ano: 2017
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1074026

Uso e manejo de herbicidas em pastagens.
Provedor de dados: 14
Autores: OLIVEIRA, M. F. de; WENDLING, I. J.
bitstream/item/101756/1/doc-165.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Controle químico; Herbicida; Erva daninha; Pastagem; Weeds; Herbicides.
Ano: 2013
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/982988

Identification of 3-Hydroxymethyl sulfentrazone in rats urine.
Provedor de dados: 14
Autores: CASTRO, V. L. S. S. de; FAY, E. F.; SILVA, C. M. M. de S.; ABAKERLI, R. B.; ASSALIN, M. R.
bitstream/item/125262/1/2007FD04.pdf
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Herbicida; Toxidez; Rato; Cobaia; Urina; Herbicides; Toxicity testing; Rats; Sulfentrazone.
Ano: 2007
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/16001

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

Cana-de-açúcar: variedade de cana-de-açúcar resistente a insetos-praga e tolerante a herbicidas.
Provedor de dados: 14
Autores: MOLINARI, H. B. C.
Cana-de-açúcar geneticamente modificada com resistência à broca-da-cana (Diatraea saccharalis) e tolerância ao herbicida glifosato. Tecnologia de grande importância econômica para o setor sucroenergético, resultado de parceria entre a startup PangeiaBiotech e a Embrapa Agroenergia.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Cana de Açúcar; Engenharia Genética; Herbicida; Cane sugar; Herbicides; Genetic improvement; Genetic engineering; Diatraea.
Ano: 2020
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1124706

Tabela periódica dos herbicidas.
Provedor de dados: 14
Autores: GAZZIERO, D. L. P.; PURÍSSIMO, C.; ADEGAS, F. S.; VOLL, E.; BRIGHENTI, A. M.; PRETE, C. E. C.
Tabela periódica dos herbicidas: nome comum; Marca Comercial; Mecanismo de ação.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Herbicida; Herbicides.
Ano: 2004
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/466653

Resistêcia de plantas daninhas aos herbicidas.
Provedor de dados: 14
Autores: GAZZIERO, D. L. P.; WOBETO, C.; CHRISTOFFOLETI, P. J.
Resistência de plantas daninhas aos herbicidas: prevenção é a melhor medida. O que é resistência aos herbicidas? Como atual um herbicida? Como as plantas daninhas se tornam resistentes? Falha no controle - diagnóstico inicial. Um possível caso de resistência. Estratégias para prevenção.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Planta daninha; Brasil; Resitance to chemicals.; Erva daninha; Herbicida; Resistência.; Brazil; Herbicides; Weeds.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/461535

High performance liquid chromatographic screening and gas chromatography-nass spectrometry confirmation of tebuthiuron residues in drinking water.
Provedor de dados: 14
Autores: BONATO, P. S.; LANCHOTE, V. L.; DREOSSI, A. de C.
Tebuthiuron (N-[5-(1,1-dimethylethyl)-1,3,4-thiadiazol-2-yl]-N,N-dimethylurea) is a phenylurea herbicide used in sugar cane culture for the pre- and post-emergence control of weeds [1,2]. Analysis of tebuthiuron (Figure 1) and of other phenylurea herbicides in environmental samples can be performed by HPLC [3-10], or by gas chromatography using selective detectors such as nitrogen-prosphorus detector (NPD), eletron-capture detector (ECD), or a mass spectrometer (MS) [11-16]. Although Loh et al [17] reported that the use of temperatures above 280oC permits quantitative tebuthiuron breakdown, thus permitting the analysis of the products of decomposition formed, methods based on gas chromatography usually involve a derivatization step to permit analysis of...
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Analysis; Contamination; Residues; Calibration; Environmental impact; Groundwater; Herbicides; Quality control.
Ano: 1999
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/13136

Movimentacao de herbicidas no solo aplicados via herbigacao na cultura do feijao em plantios direto e convencional.
Provedor de dados: 14
Autores: FONTES, J. R. A.; SILVA, A. A. da; VIEIRA, R. F.; RAMOS, M. M.
bitstream/CPAC-2009/24716/1/doc_54.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Planta daninha; Zero tillage.; Controle Químico; Feijão; Herbicida; Lixiviação; Phaseolus Vulgaris; Plantio Direto; Solo.; Chemical control; Beans; Fomesafen; Herbicides; Conventional tillage; Leaching; Metolachlor; Soil; Weeds.; Weed control.
Ano: 2002
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/546459

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

Sugarcane: Sugarcane variety resistant to insect pests and herbicides.
Provedor de dados: 14
Autores: MOLINARI, H. B. C.
Genetically modified sugarcane with resistance to sugarcane borer (Diatraea saccharalis) and glyphosate. A technology of great economic importance for the sugar-energy sector, the result of a partnership between startup PangeiaBiotech and Embrapa Agroenergia.
Tipo: Folders
Palavras-chave: Genetic modification; Sugarcane; Herbicides; Pests; Genetic improvement.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1133110

Levantamento da resistência de plantas daninhas a herbicidas no Oeste Baiano.
Provedor de dados: 14
Autores: SILVA, A. F. da; COSTA, A. G. F.; KARAM, D.; GAZZIERO, D. L. P.; PERINA, F. J.; ADEGAS, F. S.; VARGAS, L.; SILVA, W. T. da.
O aumento da incidência de plantas daninhas resistentes a herbicidas tem elevado o custo de produção do agricultor. A realização do monitoramento da dispersão destas espécies é prática importante para detecção do problema na sua fase inicial, e assim serem estabelecidas estratégias de controle para evitar a dispersão para novas áreas. Objetivando caracterizar a presença de plantas daninhas resistentes a glifosato, no Oeste Baiano, sementes de biótipos com suspeita de resistência foram coletadas nos municípios de Barreiras, Lagoa Formosa e São Desidério. A Embrapa e seus parceiros esperam com esta iniciativa alertar os produtores da região sobre a presença de biótipos resistentes a glifosato e sobre a importância de se estabelecer medidas de controle para...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Erva daninha; Resistência a pesticida; Herbicida; Weeds; Herbicides.
Ano: 2018
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1088065

Herbicidas no sistema plantio direto.
Provedor de dados: 14
Autores: MELHORANÇA, A. L.
bitstream/item/65715/1/DOC31.17510.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Direct sowing.; Controle Químico; Cerrado; Erva Daninha; Herbicida; Plantio Direto.; Herbicides; Chemical control; Weeds.
Ano: 2001
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/244405

Plantas transgênicas e a microbiota do solo.
Provedor de dados: 14
Autores: REIS JÚNIOR, F. B. dos; MENDES, I. de C.; HUNGRIA, M.
ABSTRACT: Soil micro-organisms represent a key hole in the nutrient cycle and in the maintenance of the fertility, besides execute another variety of important functions for the plants and the environment. With the possibility of the transgenic crops to cause negative impacts on the soil microbial communities, emerge the necessity to deep evaluate the real extensions of these impacts. In such case, this document presents some discussions about the interactions between transgenic plants and soil micro-organisms, showing results from different studies conducted by many reseachers in the world and focusing in the evaluated parameters and the methodologies utilised to analyse the microbial communities.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Microbial flora; Plant diseases; Pests of plants; Resistance.; Biotecnologia; Doença de Planta; Herbicida; Microbiologia do Solo; População Microbiana; Praga de Planta; Planta Transgênica; Resistência.; Herbicides; Biotechnology; Soil biology; Transgenic plants.
Ano: 2005
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/569840

Epoca de controle quimico do mal-das-folhas em viveiro de seringueira no Estado de Rondonia.
Provedor de dados: 14
Autores: LIMA, M. I. P. M.; LISBOA, S. de M.; JUNQUEIRA, N. T. V.; GASPAROTTO, L.
Procurou-se determinar a melhor epoca (periodo) de controle quimico domal-das-folhas em viveiro de seringueira, para as condicoes de Porto Velho - Rondonia, visando reduzir o numero de pulverizacoes e, consequentemente, a quantidade de fungicidas, sem que houvesse prejuizos na producao de mudas.
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Mal-das-folhas; Brasil; Rondonia; Rubber tree; Fungal diseases; South American leaf blight; SALB.; Controle Químico; Doença; Folha; Hevea Brasiliensis; Herbicida; Microcyclus Ulei; Muda; Seringueira; Viveiro.; Herbicides; Chemical control; Leaves.
Ano: 1989
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/665284

Percepção da ocorrência de plantas daninhas resistentes a herbicidas por produtores de soja-milho safrinha no Estado de Mato Grosso.
Provedor de dados: 14
Autores: SILVA, A. F. da; KARAM, D.; SILVA, W. T da; VARGAS, L.; GAZZIERO, D. L. P.; ADEGAS, F. S.
O aumento da incidência de plantas daninhas resistentes a herbicidas se destaca como um dos principais desafios enfrentados pelos produtores de grãos do Estado de Mato Grosso. O manejo equivocado dessas plantas pode afetar negativamente a produtividade das culturas e onerar o custo de produção. Objetivando caracterizar a percepção dos produtores de soja e milho safrinha com relação à distribuição da incidência de plantas daninhas resistentes a herbicidas, a Associação de Produtores de Soja e Milho do Mato Grosso (Aprosoja-MT) e a Embrapa visitaram diversas propriedades do estado, levantando informações sobre este problema. A Embrapa e seus parceiros esperam, com essa iniciativa, contribuir para a melhor caracterização do sistema de produção de soja e milho...
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Glyxine max.; Erva daninha; Zea mays; Herbicida.; Weeds; Herbicides.
Ano: 2017
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1069750

Seletividade de atrazine e [paraquat + diuron] em Crotalaria spp. e controle de soja voluntária.
Provedor de dados: 14
Autores: IKEDA, F. S.; RUBENICH, A. K.; OLIBONE, A. P. E.; SMANIOTTO, L. D.; CAVALIERI, S. D.; SILVA, A. de J.; WOIAND, H. M. G.
Resumo: Na sucessão soja-milho+crotalária, há dificuldade no controle da soja voluntária no consórcio. Por isso, objetivou-se neste estudo, identificar doses, épocas e modalidades de aplicação de atrazine e de [paraquat+diuron] em pré-emergência para o controle da soja voluntária seletivos para Crotalaria ochroleuca e Crotalaria spectabilis. Foi conduzido um ensaio para cada cultura com 12 tratamentos {testemunha sem aplicação, combinações de doses (250 g i.a ha-1 e 500 g i.a ha-1) e modalidades/épocas de aplicação de atrazine [pré-emergência (PRÉ), PRÉ e pós-emergência (PÓS) aos 14 dias ou 21 dias após a semeadura (DAS) e sequencial em PÓS aos 14 DAS e 28 DAS), além dos tratamentos de [paraquat+diuron] [500+250 g i.a ha-1] em PRÉ, associado ou não às duas...
Tipo: Folhetos
Palavras-chave: Crotalaria ochroleuca; Planta Daninha; Controle Químico; Crotalária; Fitotoxicidade; Herbicida; Erva Daninha; Crotalaria spectabilis; Chemical control; Phytotoxicity; Herbicides; Weeds.
Ano: 2021
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1138172

Efeito in vitro de glyphosate sobre rizobactérias do gênero Bacillus spp.
Provedor de dados: 14
Autores: FIGUEIREDO, J. E. F.; SILVA, J. A. A.; KARAM, D.
bitstream/item/101854/1/circ-191.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Herbicida; Controle químico; Defensivo; Herbicides; Chemical control.
Ano: 2013
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/975316

Risk assessment of herbicides and booster biocides along estuarine continuums in the Bay of Vilaine area (Brittany, France)
Provedor de dados: 5
Autores: Caquet, Th.; Roucaute, M.; Mazzella, N.; Delmas, F.; Madigou, C.; Farcy, E.; Burgeot, Thierry; Allenou, Jean-pierre; Gabellec, Raoul.
A 2-year study was implemented to characterize the contamination of estuarine continuums in the Bay of Vilaine area (NW Atlantic Coast, Southern Brittany, France) by 30 pesticide and biocide active substances and metabolites. Among these, 11 triazines (ametryn, atrazine, desethylatrazine, desethylterbuthylazine, desisopropyl atrazine, Irgarol 1051, prometryn, propazine, simazine, terbuthylazine, and terbutryn), 10 phenylureas (chlortoluron, diuron, 1-(3,4-dichlorophenyl)-3-methylurea, fenuron, isoproturon, 1-(4-isopropylphenyl)-3-methylurea, 1-(4-isopropylphenyl)-urea, linuron, metoxuron, and monuron), and 4 chloroacetanilides (acetochlor, alachlor, metolachlor, and metazachlor) were detected at least once. The objectives were to assess the corresponding...
Tipo: Text
Palavras-chave: Estuary; Herbicides; Booster biocides; Species sensitivity distribution; Risk quotient; AtlanticCoast.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00124/23571/22554.pdf

Investigation of the matrix effects on a HPLC-ESI-MS/MS method and application for monitoring triazine, phenylurea and chloroacetanilide concentrations in fresh and estuarine waters
Provedor de dados: 5
Autores: Mazzella, N.; Delmas, F.; Delest, B.; Mechin, B.; Madigou, C.; Allenou, Jean-pierre; Gabellec, Raoul; Caquet, Th.
In this work, the effects of matrix interferences on the analytical performance of a new multiresidue method based on off-line solid phase extraction followed by reversed-phase liquid chromatographic separation and electrospray triple quadrupole mass spectrometric detection were investigated. This technique allows the simultaneous determination of 30 triazines, phenylureas and chloroacetanilides, extracted from freshwaters, in 40 minutes. Quantifications were performed with the use of appropriate internal standards (i.e. atrazine D5, diuron D6 and metolachlor D6). The limits of quantification were from 1 to 32 ng L-1 for the triazines, from 5 to 59 ng L-1 for the phenylureas and from 13 to 54 ng L-1 for the chloroacetanilides. The matrix effects were...
Tipo: Text
Palavras-chave: River estuarine interface; Natural water quality; Herbicides; Matrix effects; Multiresidue method; HPLC ESI MS/MS.
Ano: 2009
URL: http://archimer.ifremer.fr/doc/2009/publication-6092.pdf

Microalgal sensitivity varies between a diuron-resistant strain and two wild strains when exposed to diuron and irgarol, alone and in mixtures
Provedor de dados: 5
Autores: 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

Influence de la matière organique dissoute naturelle et d’herbicides, seuls et combinés, sur des microalgues marines et d’eau douce
Provedor de dados: 5
Autores: Coquillé, Nathalie.
Microalgae are at the basis of aquatic food webs and may be the indirect target of herbicides from agricultural and urban uses. They also interact with other compounds from their environment such as natural dissolved organic matter (DOM), which can itself interact with herbicides. This thesis aimed to study, in laboratory controlled conditions, the influence of natural DOM on herbicide toxicity to microalgae by using monospecific, non-axenic cultures. The experiments included: natural freshwater and marine DOM, three herbicides (irgarol, diuron and S-metolachlor) singly and in mixtures, two freshwater microalgae (Gomphonema gracile and Sphaerellopsis sp.) and two marine microalgae (Chaetoceros calcitrans and Tetraselmis suecica). Effects were evaluated on...
Tipo: Text
Palavras-chave: Microalgues; Matière organique dissoute naturelle; MOD; Herbicides; Transformations chimiques; Toxicité.; Microalgae; Natural dissolved organic matter; DOM; Herbicides; Chemical transformations; Toxicity.
Ano: 2017
URL: https://archimer.ifremer.fr/doc/00461/57245/59250.pdf

Assessment of the quantities of herbicides and nutrients brought down by the river Charente to the coast and modelling of the dispersion of atrazine in the Marennes-Oleron bay
Provedor de dados: 5
Autores: Munaron, Dominique; Dubernet, Jf; Delmas, F; Stanisiere, Jean-yves; Scribe, P.
Our study aims at making progress the estimate of herbicide and nutrient inputs to the Marennes-Oleron bay which could influence summer oysters mortalities, and to bring, a better understanding of the impact on coastal ecosystems by modelling the dynamics of these compounds in the shellfish-farming area. The development of a strategy adapted to the river Charente and its estuary reveals that agricultural activity on the watershed area is omnipresent, as well on the level of the nitrogen as on the one of herbicides contributions. It is thus necessary to specify Charente fluxes, which is the main tributary of the Marennes-Oleron bay, in order to better characterize its impact on shell fish-farming activity. Hydrodynamic modelling will constitute an...
Tipo: Text
Palavras-chave: Marennes Oleron bay; River Charente; Modelling; Fluxes; Nutrients; Herbicides.
Ano: 2006
URL: http://archimer.ifremer.fr/doc/2006/publication-3612.pdf

Etude des apports en herbicides et en nutriments par la Charente : Modélisation de la dispersion de l'atrazine dans le bassin de Marennes-Oléron
Provedor de dados: 5
Autores: Munaron, Dominique.
Our study aims at making progress the estimate of herbicide and nutrient inputs to the Marennes-Oleron bay which could influence summer oysters mortalities, and to bring by modeling a better understanding of the dynamics of these compounds in the shellfish-farming area. The development of a strategy adapted to the Charente river and its estuary reveals that agricultural activity on the catchment area is omnipresent, as well on the level of the nitrogen and herbicides contributions. It is thus necessary to specify Charente fluxes, which is the main tributary of the Marennes-Oleron bay, in order to better characterize its impact on shellfishfarming activity. Use of a dispersion model will constitute an invaluable help in the risk assessment with respect to...
Tipo: Text
Palavras-chave: Atlantic coast; Marennes Oléron Bay; Modelisation; Estuary; Geochemistry behaviour; Charente River; Flux; Nutrient; Herbicide; Littoral Atlantique; Bassin de Marennes Oléron; Modélisation; Estuaire; Comportement Géochimique; Charente; Flux; Nutriments; Herbicides.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/these-2266.pdf

Environmental stress in the pacific oyster Crassostrea gigas during gametogenesis : role of herbicides?
Provedor de dados: 5
Autores: Burgeot, Thierry; Quirion, Sophie; Quiniou, Francoise; Knoery, Joel; Soletchnik, Patrick; Gagnaire, Beatrice; Renault, Tristan; Osada, M.; Geret, F.; Communal, P. Y.; Jadas-hecart, A.; Gagne, F.
In the Atlantic French coast, significant mortalities were observed in oyster communities during gametogenesis. These deaths possibly result from the cumulative effects of various stressors such as seasonal temperature variations, pesticide application and the release of contaminants from the resuspension of sediments. A field survey, based on aquaculture conditions at 15 and 70 cm from the sediment bed with genetically-resistant (R) and -sensitive (S) lines, showed a stress condition. Significant weight loss was observed during May 14th through June 10th for both R and S lines. On one hand, the levels of the egg yolk vitellin in females were decreased at May 14th for both R and S lines.  On the other hand, a significant increase in vitellin production was...
Tipo: Text
Palavras-chave: Mortalities; Herbicides; Sediment; Biomarkers; Gametogenesis; Crassostrea gigas; Pacific oysters.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/acte-3384.pdf

The influence of natural dissolved organic matter on herbicide toxicity to marine microalgae is species-dependent
Provedor de dados: 5
Autores: Coquille, Nathalie; Menard, Dominique; Rouxel, Julien; Dupraz, Valentin; Eon, Melissa; Pardon, Patrick; Budzinski, Helene; Morin, Soizic; Parlanti, Edith; Stachowski-haberkorn, Sabine.
Microalgae, which are the foundation of aquatic food webs, may be the indirect target of herbicides used for agricultural and urban applications. Microalgae also interact with other compounds from their environment, such as natural dissolved organic matter (DOM), which can itself interact with herbicides. This study aimed to evaluate the influence of natural DOM on the toxicity of three herbicides (diuron, irgarol and S-metolachlor), singly and in ternary mixtures, to two marine microalgae, Chaetoceros calcitrans and Tetraselmis suecica, in monospecific, non-axenic cultures. Effects on growth, photosynthetic efficiency (Ф’M) and relative lipid content were evaluated. The chemical environment (herbicide and nutrient concentrations, dissolved organic carbon...
Tipo: Text
Palavras-chave: Microalgae; Herbicides; Natural dissolved organic matter; DOM; Toxicity; Interactions.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00428/53964/55113.pdf

Persistence of atrazine impact on aneuploidy in the Pacific oyster, Crassostrea gigas
Provedor de dados: 5
Autores: Bouilly, Karine; Mccombie, Helen; Leitao, Alexandra; Lapegue, Sylvie.
Aneuploidy is the alteration of the normal diploid chromosome number. In the Pacific oyster, Crassostrea gigas, hypodiploid aneuploid cells have regularly been reported as has 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 Crassostrea gigas adults and juveniles. To evaluate the persistence of this impact, the present study focused on a sample of the same juveniles exposed to different atrazine treatments (0.01 mg/l which represents a peak value found in a polluted environment and 0.1 mg/l) for three and a half months and evaluated them for aneuploidy after another two and a half months in non polluted conditions....
Tipo: Text
Palavras-chave: Crassostrea gigas; Genetic; Pollutant persistence; Oyster culture; Marine molluscs; Herbicides; Cultured organisms; Chromosomes.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/acte-3344.pdf

Effects of twelve pesticides on larvae of oysters (Crassostrea gigas) and on two species of unicellular marine algae (Isochrysis galbana and Chaetoceros calcitrans)
Provedor de dados: 5
Autores: His, Edouard; Seaman, Matthias.
The effects of seven herbicides, four insecticides and one molluscicide were tested at concentrations of up to 10 mg/l on larvae of oysters, Crassostrea gigas (9 days exposure), and on laboratory cultures of the algae Isochrysis galbana and Chaeloceros calcilrans (21 days exposure). Ali of the pesticides tested had significant toxic effects on at least one of the test organisms. The strongest effects were those of lindane and isoproturon on survival and growth of C.gigas larvae, and of isoproturon and carbetamide on growth of Isochrysis and Chaeloceros cultures. The log-probit model for the relationship between dosage and effect, and Haber's rule for the relationship between duration of exposure and effect, hardly ever applied to our data. In sorne cases...
Tipo: Text
Palavras-chave: Oysters; Crassostrea gigas; Insecticides; Herbicides; Isochrysis galbana; Chaetoceros calcitrans.
Ano: 1993
URL: http://archimer.ifremer.fr/doc/00018/12949/9922.pdf

Comportement géochimique des herbicides et de leurs produits de dégradation en milieu estuarien et marin côtier
Provedor de dados: 5
Autores: Munschy, Catherine.
The presence and geochemical behaviour of herbicides were investigated in estuarine and marine waters of the French coasts (Seine, Charente, Gironde estuaries and Rhône delta). These organic contaminants were quantified by capillary Gas Chromatography (GC) using Nitrogen-Phosphorus Detecter and identified by GCIMS (Mass Spectrometry). A liquid-solid extraction method using XAD-2 resins was developed,  allowing the analysis of both chloro-triazines and their degradation products in the nanogram per litre (ng.l-1) detection range. Different types of chemicals were identified in the estuarine and coastal waters: triazine, amide and acetanilide herbicides. These compounds are mainly present in the water phase, with less than 1% associated with particulate...
Tipo: Text
Palavras-chave: Estuaires; Herbicides; Chloro-triazines; Dé-éthylatrazine; Comportement géochimique; Phase dissoute; Conservativité; Flux; Estuaries; Herbicides; Chloro-triazines; De-ethylatrazine; Geochemical behaviour; Conservative mixing; Flux.
Ano: 1995
URL: http://archimer.ifremer.fr/doc/00443/55443/56962.pdf

Evaluation of the partial renewal of in situ phytoplankton microcosms and application to the impact assessment of bentazon and dimethenamid
Provedor de dados: 5
Autores: De La Broise, Denis; Stachowski-haberkorn, Sabine.
Microcosms, each consisting of 2 L natural surface seawater maintained in 2.3-L glass bottles, were immersed at a depth of 6 metres. The renewal of ten percent of microcosm volumes was carried out every other day. Phytoplankton-containing seawater was used for renewal (previously filtered through 25-, 50- or 200-μm cut-off). Phytoplankton community pigment analysis (by HPLC) and flow cytometry analysis were performed. After 13 days, data exhibited phytoplankton characteristics in microcosms in the same range as that of the natural surrounding sea water over the same period. Furthermore, in these microcosms, a negative correlation was observed between the filtration cut-off used for renewal water, and the eukaryote cell count. Herbicides were tested as...
Tipo: Text
Palavras-chave: Phytoplankton; Microcosm; Herbicides; Dimethenamid; Bentazon.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00088/19889/17548.pdf

Relationships between transpiration efficiency and carbon isotope discrimination in chickpea (C. arietinum L)
Provedor de dados: 30
Autores: Kashiwagi, J.
Palavras-chave: Transpiration (animals); Genotypes; Chickpeas; Herbicides; Isotopes; Drought stress; Harvest index; Vegetative stage; Carbonation; Weeds.
Ano: 2006
URL: http://agropedia.iitk.ac.in/openaccess/?q=node/3184

Decision criteria for optimizing postemergence johnsongrass control in soybean crops in Argentina
Provedor de dados: 86
Autores: Tuesca,Daniel; Puricelli,Eduardo; Nisensohn,Luisa; Faccini,Delma; Papa,Juan.
Field studies were established in Zavalla and Oliveros, Argentina, during four years in order to optimize Johnsongrass (Sorghum halepense (L.) Pers.) chemical control by means of the thermal calendar model in comparison with other criteria (weed height or days after sowing). The effect of three application dates of postemergence herbicides was determined by visual control, density of tillers originated from rhizome bud regrowth, and from crown and shoot bud regrowth, and soybean yield. Following the thermal calendar model criterion, applications during the second date afforded the best control. Weed height for the first date showed little variability between experiments but was highly variable in the second and third application dates, achieving in some...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weeds; Herbicides; Application timing.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X1999000500004

Fungi degrading metsulfuron methyl in agricultural soils of Argentina
Provedor de dados: 85
Autores: Vázquez,MB; Bianchinotti,MV.
Strains of Mucor, Penicillium and Trichoderma, able to use metsulfuron-methyl (MM) as a sole carbon and energy source, were isolated from agricultural soils in Argentina. This is the first time this ability is recorded in the Mucor or Trichoderma species. When the isolated strains were compared in relation to their capacity to use the herbicide, those of Trichoderma showed the best results. Because of this, they were selected for further assays. The effect of metsulfuron on growth in liquid media was tested. Also, the ability of conidia to germinate in water agar medium containing the target herbicide was evaluated. All the strains could grow from spores using only metsulfuron-methyl as a carbon and energy source. These strains of Trichoderma are promising...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Degradation; Herbicides; Soils; Sulfonylurea; Trichoderma.
Ano: 2013
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572013000100016

Assimilate partitioning and phytotoxicity in soybean plants treated with herbicides
Provedor de dados: 87
Autores: Marenco,Ricardo A.; Lopes,Nei F.
To investigate the effects of trifluralin, chlorimuron and clomazone on morphology and assimilate partitioning during soybean development, plants were grown in a greenhouse and sampled at 14-day intervals. Clomazone reduced stem and leaf dry matter accumulation at 14 days after emergence (DAE), while trifluralin and chlorimuron reduced plant part dry matter accumulation up to 28 DAE. The number of leaves, plant height, mass and number of pods and seeds, and the shoot/root ratio were not influenced by the herbicides. Roots, stems and leaves were the preferred sinks up to the R2 growth stage, while pods and developing seeds became the preferred sinks later. This order was not altered by the herbicides.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Trifluranlin; Clorimuron; Clomazone; Assimilate partitioning; Herbicides.
Ano: 1996
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83581996000100006

The Effect of Different Weed Management Strategies on the Growth and Yield of Direct-Seeded Dry Rice (Oryza sativa)
Provedor de dados: 87
Autores: MUHAMMAD,S.; MUHAMMAD,I.; SAJID,A.; MUHAMMAD,L.; MAQSHOOF,A.; NADEEM,A.
Weed management is a primary concern in direct seeded rice (DSR) cropping because weed growth becomes a major constraint on crop yield. A two year field study was set up to evaluate the effect of various weed control measures on crop growth, grain yield and grain quality of DSR. The experiment involved five different weed control measures: hand weeding, hoeing, inter-row tine cultivation, inter-row spike hoeing and herbicide treatment (Nominee 100 SC). The extent of weed control (compared to a non-weeded control) ranged from 50-95%. The highest crop yield was obtained using hand weeding. Hand weeding, tine cultivation and herbicide treatment raised the number of fertile rice tillers formed per unit area and the thousand grain weight. Tine cultivation...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides; Direct seeded rice; Grain yield; Tine cultivator.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000100057

The Effects of Nicosulfuron and Glyphosate on Microbial Activity of Different Soils
Provedor de dados: 87
Autores: ŠANTRIC,Lj.; RADIVOJEVIC,Lj.; GAJIC-UMILJENDIC,J.; SARIC-KRSMANOVIC,M.; ÐUROVIC-PEJCEV,R.
ABSTRACT: The effects of the nicosulfuron and glyphosate herbicides on microbial activity in two soils with different physical and chemical properties (loam and sand) were investigated. Nicosulfuron was applied at the rates of 0.3, 0.6, 3.0 and 30.0 mg kg-1 soil and glyphosate at 32.6, 65.2, 326.0 and 3260.0 mg kg-1 soil in the laboratory. Changes in dehydrogenase and urease activity, as well as in microbial biomass carbon, were examined. Samples for the analysis were collected at 3, 7, 14, 30 and 45 days after herbicide application. The results showed that the effects of nicosulfuron and glyphosate depended on treatment rate, duration of activity, test parameters and soil types. In general, application of the herbicides significantly increased the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides; Loam sand; Dehydrogenase; Urease; Biomass carbon.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100301

Effect of Herbicides on Yield and Yield Components of Hybrid Maize (Zea mays)
Provedor de dados: 87
Autores: KHAN,I.A.; HASSAN,G.; MALIK,N.; KHAN,R.; KHAN,H.; KHAN,S.A.
ABSTRACT Maize crop (Zea mays) is facing lots of problems from different pests throughout Asia, including Pakistan. Weed infestation is one of the serious pests that remarkably decrease the grain yield in maize. In Khyber Pakhtunkhwa province of Pakistan, the trend of maize hybrid cultivation is gaining the attention of the farmers due to its higher production. Therefore, in this research we tested herbicides (Stomp 330 E, Dual gold 960 EC, 2,4-D, ester) in maize hybrids (P-3025, P-32T78, P-3203). The experiment was done in RCB design with split plots arrangement, where maize hybrids were kept in main plots, while herbicides were assigned to the subplots. Each treatment was repeated three times at the New Developmental Farm (NDF), at the Peshawar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides; Leaf area; Maize hybrids; Weeds.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000400729

Mowing Associated to Chemical Control for Glyphosate-Resistant Cotton Stalk Destruction
Provedor de dados: 87
Autores: BRAZ,G.B.P.; ANDRADE JR.,E.R.; NICOLAI,M.; LOPEZ OVEJERO,R.F.; CAVENAGHI,A.L.; OLIVEIRA JR.,R.S.; CHRISTOFFOLETI,P.J.; PEREIRA,A.T.A.; CONSTANTIN,J.; GUIMARÃES,S.C.
ABSTRACT: Post-harvest cotton stalk control is mandatory in many cotton producing countries, and the major methods used for this practice are mechanical and chemical (glyphosate and 2,4-D as the most usual herbicides applied), or a combination of both. However, the adoption of glyphosate-resistant cotton varieties by growers have required the development of alternative chemical treatments. Six trials were conducted to evaluate systems combining mowing and chemical control of glyphosate-resistant cotton stalks. Experiments conducted in 2014 were installed in randomized complete block design with nineteen treatments and four replicates. In 2015, the experiments were also conducted in randomized complete block design with eleven treatments and four...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crop residues; Fallow management; Herbicides; Transgenic plants.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100260

Association of Mechanical and Chemical Methods for Cotton Stalk Destruction
Provedor de dados: 87
Autores: FRANCISCHINI,A.C.; CONSTANTIN,J.; MATTE,W.D.; OLIVEIRA JR.,R.S.; RIOS,F.A.; MACHADO,F.G.
ABSTRACT: The destruction of cotton stalks after harvesting is a prophylactic measure aimed at reducing the population of insects and disease inoculants that may remain in the crop residues and remaining cotton plants. The objective of this work was to evaluate integrated methods of management of the cotton stalks, combining mechanical and chemical control, to promote the eradication of cotton stalks. A 7x5 factorial experiment was installed where seven different methods of mechanical control of cotton stalk and five herbicide treatments were tested. The percentage of control (visual scale of 0 to 100%) and the number of plants regrowth per meter were evaluated at 14, 28 and 50 days after herbicide application treatment. At the end of the experiment, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gossypium hirsutum; Herbicides; Integrated management; Host-free period.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100162

Selectivity of glyphosate tank mixtures for RR soybean
Provedor de dados: 87
Autores: Alonso,D.G; Constantin,J; Oliveira Jr,R.S; Arantes,J.G.Z; Cavalieri,S.D; Santos,G; Rios,F.A; Franchini,L.H.M.
An active ingredients mixture of different action mechanisms is an essential tool to prevent or manage areas with resistant weeds. However, it is important that such a mixture provides adequate selectivity to the crop. The aim of this work was to evaluate glyphosate selectivity to glyphosate-resistant (RR) soybean, and also verify if there is selectivity in mixtures with other active ingredients applied postemergence aimed at new control strategies, which might be used in RR soybean cultivation. The herbicides and respective rates (g ha-1) evaluated were: glyphosate (720, 960, 1,200, and 1,440), and the mixtures of glyphosate (960) with cloransulam-methyl (30.24), fomesafen (125), lactofen (72), chlorimuron-ethyl (12.5), flumiclorac-pentyl (30), bentazon...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides; Glyphosate-resistant soybean; Tolerance; Injury.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582011000400024

Efficacy Evaluation of Fertilizers and Weed Control Practices to Mitigate Wheat Nutrient and Yield Losses
Provedor de dados: 87
Autores: NADEEM,M.A.; TANVEER,A.; MAQBOOL,R.; ABBAS,T.; FAROOQ,N.
ABSTRACT: Low fertilizer use efficiency due to inappropriate weed control practices is one of the main causes of poor wheat yield worldwide. A 2 year field experiment was conducted to study the effects of three fertilizer levels and four weed control practices on fertilizer use efficiency and nutrient uptake by wheat and its associated weeds. Fertilizer levels were F0 (zero fertilizer), F1 (75 kg ha-1 N + 50 kg ha-1 P2O5), and F2 (150 kg ha-1 N + 100 kg ha-1 P2O5) and weed control included W1 (weedy check), W2 (pendimethalin applied at 1,031 g a.i. ha-1), W3 (isoproturon + carfentrazone ethyl applied at 750 g a.i. ha-1) and W4 (manual weed control). Different weed control practices significantly reduced the NPK uptake by weeds and increased NPK uptake by...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Grain yield; Herbicides; Fertilizer use efficiency; Nutrients uptake; Losses by weeds.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100229

Sorption and desorption of Suflafenacil in two soils in the state of São Paulo with different physical and chemical attributes
Provedor de dados: 87
Autores: Matallo,M.B.; Franco,D.A.S.; Almeida,S.D.B.; Cerdeira,A.L.
A study was conducted to evaluate the sorption and desorption of 14C herbicide saflufenacil (pyrimidinedione) in two soils in the State of São Paulo, classified as Red Yellow Latosol with clayey texture (LVA-1) and medium texture (LVA-2), using the batch method through isotherms. The soils were air dried and sieved a 2 mm mesh. The radioactivity was determined by liquid scintillation spectrometry in acclimatized room (25 ± 2 °C). Sorption isotherms were conducted for 5 concentrations of saflufenacil (5.0; 2.5; 1.0; 0.5 and 0.05 μg mL-1) and the results were adjusted to the Freundlich equation, thus obtaining the parameters of sorption followed by two extractions with 0.01 M CaCl2 to determine desorption parameters similarly to sorption. The results showed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Isotherms; Hysteresis; Herbicides.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000200017

Increased Foliar Activity of Isoproturon+Tribenuron and Pyroxsulam Against Little Seed Canary Grass and Field Bindweed by Proper Adjuvant Selection in Wheat
Provedor de dados: 87
Autores: RIZWAN,M.; TANVEER,A.; KHALIQ,A.; ABBAS,T.; IKRAM,N.A.
ABSTRACT: Using an adjuvant to optimize and increase the foliar activity of post emergence herbicides is an acceptable way to reduce their side effects. Field researches were conducted to detect a suitable adjuvant for two post-herbicides namely, isoproturon+tribenuron and pyroxsulam against little seed canary grass (Phalaris minor) and field bindweed (Convolvulus arvensis). Treatments were, isoproturon+tribenuron at 1,025 g a.i. ha-1 (recommended dose) and pyroxsulam at 140.6 g a.i. ha-1 (recommended dose) alone or their reduced dose (75% of the recommended dose) isoproturon+tribenuron at 769 and pyroxsulam at 105.5 g a.i. ha-1, tank mixed with three different adjuvants viz. alkylethersulphate sodium salt at 400, fatty alcohol ethoxylate at 200 and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Wheat; Herbicides; Adjuvant; Alkylethersulphate sodium; Fatty alcohol ethoxylate; Sunflower oil.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100224

Optimizing activity of herbicides at reduced rate on Emex spinosa campd. with adjuvants
Provedor de dados: 87
Autores: Javaid,M.M.; Tanveer,A.; Ahmad,R.; Yaseen,M.; Khaliq,A.
In pot experiments, two adjuvants were evaluated for their efficacy in enhancing activity of five herbicides applied at reduced rates (75% of the recommended rates) on Emex spinosa at the cotyledon-leaf and at the two- to four- leaf stage. Herbicides (at recommended rates) including fluroxypyr+MCPA at 450 g a.i. ha-1, carfentrazone-ethyl at 20 g a.i. ha-1, bromoxynil+MCPA at 450 g a.i. ha-1, thifensulfuron-methyl at 75 g a.i. ha-1 and tribenuronmethyl at 75 g a.i. ha-1 alone and tank mixed at reduced rates with adjuvants, namely, alkyl ether sulphate sodium salt at 625 mL ha-1 or fatty alcohol ethoxylate at 375 mL ha-1. Addition of the adjuvants to reduced rates of fluroxypyr+MCPA and carfentrazone-ethyl, increased their efficacy with 100% mortality and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Alkyl ether sulphate sodium salt; Devil's thorn; Fatty alcohol ethoxylate; Herbicides; Weed leaf stages.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582012000200023

Integrated Approaches for Weed Suppression in Chickpea (Cicer arietinum) under Residual Moisture After Rice Crop
Provedor de dados: 87
Autores: KHAN,I.A.; KHAN,R.; HASSAN,G.; WAQAS,M.; SHAH,S.M.A.; KHAN,S.A.
ABSTRACT: Three-year field studies were undertaken at Agricultural Research Institute, Dera Ismail Khan, Khyber Pakhtunkhwa Province, Pakistan from 2010-11 to 2012-2013 with the aim of assessing the efficacy of different management techniques on weed growth and yield of chickpea under rain-fed conditions on residual moisture of a previous rice crop. Treatments of the experiment consisted of recommended full and half doses of three herbicides, i.e., Stomp 330E, Dual Gold 960EC and Isoproturon 500EW and the plant extract of Parthenium hysterophorus. Hand weeding treatment was kept as positive control whereas weedy check was included as negative control treatment. The experiment was laid out in a Completely Randomized Block (CRB) design replicated thrice....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides; Stomp 330E; Parthenium extract; Residual moisture; Weed control; Seed yield.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100339

Influence of Tillage Systems and Selective Herbicides on Weed Management and Productivity of Direct-Seeded Rice (Oryza sativa)
Provedor de dados: 87
Autores: ABBAS,A.; KHALIQ,A.; SAQIB,M.; MAJEED,M.Z.; ULLAH,S.; HAROON,M.
ABSTRACT: Weeds cause considerable damage to rice crop. To ascertain the influence of different weed management practices under different tillage systems, a field experiment was conducted during 2014-15. Experimental design was RCB with split-plot arrangement and with a net plot size of 6 x 2 m. Three tillage systems viz; zero tillage with glyphosate application and conventional tillage with and without stale seed bed, and seven weed management treatments viz; weedy check, manual weeding, oxadiargyl as pre-emergence, pyrazosulfuron as pre-emergence, pyrazosulfuron as post-emergence, fenoxaprop-ethyle + sodium fluoride as post-emergence and fenoxaprop-ethyle + sodium fluoride as post-emergence. Results revealed that all treatments including tillage systems...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Oryza sativa L.; Direct-seeded rice; Tillage systems; Herbicides; Integrated weed management.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100280

Seed Pre-Treatment and Planting Geometry Positively Influence Herbicide Efficacy in Wheat (Triticum aestivum)
Provedor de dados: 87
Autores: ULLAH,A.; KHALIQ,A.; RIAZ,A.; NOOR,M.A.; FIAZ,S.; WAQAS,M.A.; ZAIN,M.; ASHRAF,U.; NAWAZ,A.
ABSTRACT: An experiment was conducted to evaluate the effect of priming, planting patterns and weed control treatments on weed spectrum, grain yield and profitability of wheat, during the growing season 2013-14. Two levels of seed priming (no priming, osmopriming) and planting patterns (broadcast, row plantation), and four levels of herbicide (pyroxulam at the rate of 14.08, 10.56, 7.04 and 7.521 g a.i. ha-1) were employed in the experiment, laid out in a randomized complete block design with split-split plot arrangement. The data regarding weed density, stand establishment, growth, and yield associated traits of wheat were recorded and analyzed by analysis of variance technique using statistical software DSAASTAT. The results revealed that the final...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Seed priming; Planting geometry; Herbicides; Weed spectrum.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100215

Phytosociology of Weeds in Off-Season Maize Crops in the Middle Paranapanema
Provedor de dados: 87
Autores: GAZOLA,T.; DIAS,M.F.; DUARTE,A.P.; CARBONARI,C.A.; VELINI,E.D.
ABSTRACT: This work is the first one after the consolidation of the introduction of the RR technology in maize and soybean crops, following weed surveys previously carried out in the region of the Middle Paranapanema, São Paulo state. The objective was to carry out a phytosociological survey of weeds in off-season maize crops no-tillage, in the same properties where the studies had been previously carried out, in the described region, taking into account the management of the weed community adopted by farmers, and the percentage of plant coveron the soil. The surveys were carried out in 19 farms conducted under no-tillage systems, with off-season maize cultivated in soybean succession, both RR crops, in nine municipalities of the São Paulo region of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides; Weeds; No-tillage; Zea mays.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100313

Potential and Persistence of the Inhibitory Effect of Sorghum on Weeds
Provedor de dados: 87
Autores: BIESDORF,E.M.; PIMENTEL,L.D.; TEIXEIRA,M.F.F.; BIESDORF,E.; SALLA,P.H.H.; OLIVEIRA,A.B.
ABSTRACT: The inhibitory interaction between plants may be an important strategy of integrated weed management (IWM). This study aimed to investigate the inhibitory effects of sorghum on phytosociology and infestation of weeds during cultivation and after harvest. An experiment was carried out in the field in a randomized block design in a split-plot arrangement. Plots consisted of sorghum and corn (control) and subplots were composed of different periods of weed community assessment after crop harvest (DAH) (0, 20, 40, 60, and 80 days). An increased number of species and botanical families was observed after harvest. Degradation of sorghum and corn straw reached the stabilization at 60 DAH. Although sorghum has presented a lower amount of straw and soil...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathy; Herbicides; Weed management; Sorghum bicolor; Zea mays.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100297

Volunteer RR® corn management in roundup ready® soybean-corn succession system
Provedor de dados: 87
Autores: PETTER,F.A.; SIMA,V.M.; FRAPORTI,M.B.; PEREIRA,C.S.; PROCÓPIO,S.O.; SILVA,A.F.
The present study evaluated the effects of cover crops (Pennisetum glaucum, Crotalaria spectabilis and Urochloa ruziziensis) associated with the application of herbicides {glyphosate; (glyphosate + haloxyfop-R); (glyphosate + fluazifop-p-butyl); (glyphosate + imazethapyr) and (glyphosate + imazaquin)} in soybean desiccation management for volunteer RR® corn control. The experiment was conducted under field conditions at Sinop-MT, during the 2013/2014 crop season, in a randomized complete blocks design with factorial scheme and four replications. The following parameter were evaluated: dry matter of cover crops and ground coverage rate, control of volunteer RR® corn present at the time of desiccation, dry matter, height and intoxication level on soybean...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Zea mays; Glycine max; Cover crops; Herbicides.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000100119

Application of Various Herbicides on Controlling Large and Narrow Leaf Weeds and Their Effects on Physiological and Agronomic Traits of Wheat
Provedor de dados: 87
Autores: Bari,A.; Baloch,M.S.; Shah,A.N.; Khakwani,A.A.; Hussain,I.; IQBAL,J.; Ali,A.; Bukhari,M. A.
ABSTRACT: In order to examine application of various herbicides for controlling weeds in wheat crop, a field trial was conducted at the Agronomic Research Area, Faculty of Agriculture, Gomal University, Dera Ismail Khan, Khyber Pakhtunkhwa (KPK) during the year 2015-2016. The experiment was laid out in a randomized complete block design (RCBD) with split-plot arrangements having three replications. The main plot was comprised application time of herbicides while the use of herbicides was assigned to sub-plots. The data revealed that most of the weed parameters, physiological traits and agronomic attributes of crop plants were significantly affected by weed management practices including the use of herbicides at different time intervals over the weedy...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weeds; Herbicides; Practices; Control.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100209

Assessment of Integrated Weed Management Approaches on Asphodelus tenuifolius in Chickpea
Provedor de dados: 87
Autores: KHAN,I.; KHAN,M.I.; ULLAH,H.; HAROON,M.; GUL,B.
ABSTRACT: Chickpea is the third most important crop of rainfed areas of Pakistan, and it is severely affected by noxious weed Asphodelus tenuifolius. Therefore, a field trial was conducted to evaluate the effect of different allelopathic weed extracts, herbicides and mulches in controlling A. tenuifolius and other associated weeds in chickpea at “District Karak” Khyber Pakhtunkhwa-Pakistan. The experiment was carried out in a Randomized Complete Block Design (RCBD) and replicated thrice using a chickpea cultivar (Chattan) which was grown for the experimental trial. There were 9 treatments along with control for comparison. The treatments Stomp 330 EC (Pre-emergence) at 2.5 L ha-1, Fenoxaprop-p-ethyl, Bromoxanil+MCPA (Tank mix), Starane-M, mulching...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathy; Cicer arietinum L.; Herbicides; Mulches; And wild onion.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100300

Glyphosate translocation in hairy fleabane (Conyza bonariensis) biotypes
Provedor de dados: 87
Autores: Ferreira,E.A.; Galon,L.; Aspiazú,I.; Silva,A.A.; Concenço,G.; Silva,A.F.; Oliveira,J.A.; Vargas,L.
The objective of this work was to evaluate the translocation of glyphosate in C. bonariensis plants resistant and susceptible to that herbicide. The 14C-glyphosate was mixed with commercial gyhphosate (800 g ha-1) and applied on the center of the adaxial face of a third node leaf, using a micro syringe, and adding 10 µL of a solution with specific activity of 1,400 Bq, 45 days after plant emergence. The concentration of the glyphosate translocated in the plant was evaluated at time intervals of 6, 12, 36 and 72 hours after being applied on the application leaf, stem, roots and leaves. Ten hours after treatment application, the distribution of the product in the application leaf, divided into base, center and apex, was also evaluated by measuring the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides; Radiochemical; Resistance; Translocation.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582008000300020

Selection of Indicator Species of the Tembotrione Sorption in Soils with Different Attributes
Provedor de dados: 87
Autores: FARIA,A.T.; SILVA,E.M.G.; PEREIRA,G.A.M.; SOUZA,M.F.; SILVA,A.A.; REIS,M.R.
ABSTRACT: Studies on herbicide behavior in soils may be performed using biological and chemical methods. The efficiency of the biological method depends on the indicator species sensitivity to low herbicide concentrations in the soil solution. Among the herbicides commonly used in Brazil for corn cultivation, tembotrione stands out. In the last agricultural seasons, the intoxication of some crops when cultivated in succession to corn has been reported, which may be attributed to tembotrione recommendations without the knowledge of their interactions with colloids of tropical soils. In this research, we selected an indicator plant species of tembotrione residues in the soil after sorting 12 species. The sorption of this herbicide was estimated in two...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioassay; Environmental impact; Herbicides; Technical efficiency.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100327

Weed Management in Direct Seeded Rice Grown under Varying Tillage Systems and Alternate Water Regimes
Provedor de dados: 87
Autores: RIAZ,A.; KHALIQ,A.; FIAZ,S.; NOOR,M.A.; NAWAZ,M.M.; MAHBOOB,W.; ULLAH,S.
ABSTRACT: In direct seeded rice (DSR), flushes of weeds are encountered, and mostly subsequent herbicides need to apply to control weeds that appear later. A farmer friendly approach was hypothesized in present study to integrate the management strategies for water, soil and cost effective weed free rice production. Efficacy of various herbicides in weed control to improve the performance of aerobic rice grown under varying tillage and alternate water regimes was evaluated. Five weed management techniques (weedy check, weed-free, pendimethalin followed by manual weeding, pendimethalin + bispyribac sodium (BS) + bensulfuron (B) and pendimethalin + MCPA) were carried out within the alternate wetting and drying (AWD) regimes (15 and 20 cm depth) under two...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aerobic rice; Herbicides; Irrigation management; Benefit-cost ratio.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100259

Growth, nodulation, and yield of soybean and associated weeds as affected by weed management
Provedor de dados: 87
Autores: Abdelhamid,M.T.; El-Metwally,I.M.
Two field experiments were conducted at the experimental farm of the National Research Centre at Shalakan, Kalubia Governorate, Egypt, during 2006 and 2007 seasons, to study the effect of three pre-emergence herbicides, prometryn [at the rate of 0.75, 1.5 and 2.25 kg ha-1], oxadiargyl [at the rate of 240, 480 and 720 g ha-1] and butralin [at the rate of 1.20, 2.40 and 3.36 kg ha-1], two hand hoeing treatments and a nonweeded check, on weed infestation, nodulation, growth, yield and yield attributes of soybean plants. Two hand hoeing treatments resulted in the highest weed depression expressed as the lowest fresh and dry weights of broadleaved, grassy and total weeds. The reduction percentage in weed dry matter compared to the nonweeded treatment was 98.3,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Herbicides; Weed management.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582008000400017

Alkyl Ether Sulfate Improves Efficacy of Herbicides Against Common Goosefoot and Field Bindweed in Wheat
Provedor de dados: 87
Autores: TANVEER,A.; ABBAS,N.; SAFDAR,M.E.; IKRAM,R.M.
ABSTRACT: Tank mixed application of herbicides with adjuvant is required for effective weed management and to reduce herbicide load on agricultural crops. Field studies were conducted to investigate the effect of herbicides at reduced rates with adjuvant on common goosefoot (Chenopodium album) and field bindweed (Convolvulus arvensis) and grain yield of wheat for two consecutive winter seasons. Treatments included post-emergence foliar application of four herbicides viz., fluroxypyr + tribenuron-methyl + clopyralid, mesosulfuron-methyl + iodosulfuron-methyl sodium, bromoxynil + MCPA, iodosulfuron-methyl sodium (pre mixed formulations) at their recommended rates 244.5, 14.2, 444.6, 10 g a.i. ha-1, respectively and 25% reduced rates with alkyl ether sulfate...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Adjuvant; Grain yield; Herbicides; Wheat.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100283

Agronomic Performance of Intacta RR2 Soybean Submitted to Doses of Glyphosate
Provedor de dados: 87
Autores: CESCO,V.J.S.; KRENCHINSKI,F.H.; RODRIGUES,D.M.; NARDI,R.; ALBRECHT,A.J.P.; ALBRECHT,L.P.
ABSTRACT: This study aimed at evaluating the agronomic performance of Intacta RR2 soybean submitted to the application of glyphosate doses in post-emergence. For this, two experiments were conducted in two locations (Palotina and Marechal Cândido Rondon - Paraná state). Applications were carried out with increasing rates of glyphosate (0, 720, 1,440, 2,160, 2,880, 3,600, 4,320 g a.e. ha-1), constituting seven treatments with an experimental design in randomized blocks with four replications, totaling 28 plots for each location. The cultivar used for both experiments was Monsoy 6210 Intacta RR2 IPROTM. The analyzed variables were phytotoxicity at 3, 7, 14, 21 and 28 DAA, A-B and total chlorophyll index, final height, number of pods, 100-seed weight, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Glycine max; Yield; Phytotoxicity; Herbicides; Transgenic soybean.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100306

Sorption-Desorption Behavior of Imazethapyr and Imazapic on Six Brazilian Soils
Provedor de dados: 87
Autores: MARINHO,M.I.C.; SOUZA,W.M.; CABRAL,M.F.; CASTRO NETO,M.D.; QUEIROZ,M.E.L.R.; SILVA,A.A.
ABSTRACT: The characterization of sorption-desorption for imazethapyr and imazapic in six agricultural soils was performed to assess the availability of these herbicides in pollution processes. In this pursuit, the batch equilibrium method and high-performance liquid chromatography were used. The magnitude of Kf values ranging from 0.38 to 2.52 mg1-n kg-1 Ln for imazethapyr and 0.43 to 2.72 mg1-n kg-1 Ln for imazapic indicate weak sorption in the evaluated soils. Soil pH (5.1 to 6.1) and iron oxalate affect sorption-desorption of both herbicides but the type and percentage of clay can be the main factor affecting these two processes. A high desorption percentage (&gt;70%) was found in Regosol, Dystric Plinthosol, Ferralsol (for both herbicides), and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides; Imidazolinone; Pollution; Batch equilibrium.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100342

Selectivity of glyphosate in tank mixtures for RR soybean in sequential applications with mixtures only in the first or second application
Provedor de dados: 87
Autores: Alonso,D.G; Constantin,J; Oliveira Jr,R.S; Biffe,D.F; Raimondi,M.A; Gemelli,A; Blainski,E; Carneiro,J.C.
Tank mixtures among herbicides of different action mechanisms might increase weed control spectrum and may be an important strategy for preventing the development of resistance in RR soybean. However, little is known about the effects of these herbicide combinations on soybean plants. Hence, two experiments were carried out aiming at evaluating the selectivity of glyphosate mixtures with other active ingredients applied in postemergence to RR soybean. The first application was carried out at V1 to V2 soybean stage and the second at V3 to V4 (15 days after the first one). For experiment I, treatments (rates in g ha-1) evaluated were composed by two sequential applications: the first one with glyphosate (720) in tank mixtures with cloransulam (30.24),...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides; Glyphosate-resistant soybean; Tolerance; Injury.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582010000400020

Consequences of Varied Planting Geometry and Early Post Emergence Herbicides for Crop-Weed Interventions in Rice Under Semi-Arid Climate
Provedor de dados: 87
Autores: ASHRAF,U.; ABBAS,R.N.; HUSSAIN,S.; MO,Z.W.; ANJUM,S.A.; KHAN,I.; TANG,X.R.
ABSTRACT Adjustment of planting geometry along with reduced applications of herbicides can be a viable tool for effective weed management in rice. This present study has examined the effects of three planting geometries (20 cm x 20 cm, 20 cm x 10 cm and 10 cm x 10 cm); along with early post emergence herbicides, viz; bispyribac sodium 20% WP at 39.50 g a.i. ha-1, bispyribac sodium 100 SC at 39.50 g a.i. ha-1, cyhalofop-butyle 10% EC at 49.50 g a.i. ha-1, and penoxulam 240 EC at 15 g a.i. ha-1 on weed growth, and rice performance under semi-arid climate. A weedy check was maintained as control where no herbicide was applied. Results showed that the narrowest plant spacing (10 cm x 10 cm) effectively controlled weeds; however, it also resulted in reduced...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides; Plant spacings; Rice growth; Weed interference; Yield loss.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000400737

Glyphosate as a tool to produce shikimic acid in plants
Provedor de dados: 87
Autores: Matallo,M.B.; Almeida,S.D.B.; Franco,D.A.S.; Cerdeira,A.L.; Gazzeiro,D.L.P.
Oseltamivir phosphate is a potent viral inhibitor produced from shikimic acid extracted from seeds of Ilicium verum, the most important natural source. With the site of action 5-enolpyruvylshikimate-3-phosphate synthase (EPSP), glyphosate is the only compound capable of inhibiting its activity with the consequent accumulation of shikimic acid in plants. Corn and soybean plants were sprayed with reduced rates of glyphosate (0.0 to 230.4 g a.i. ha¹) and shikimic acid content in the dry mass was determined by HPLC 3, 7 and 10 days after application. Results showed shikimic acid accumulation in dry mass with increases of up to 969% in corn and 33,000% on soybeans, with peak concentrations 3 days after treatment (DAT). Industrial feasibility for shikimic acid...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides; Corn; Soybean; Oseltamivir; Pandemics; HPLC.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000300016

Chemical Use Reductions in Urban Fringe Agriculture
Provedor de dados: 31
Autores: Adelaja,   Adesoji O.; Sullivan,   Kevin P.; Hailu,   Yohannes G.; Govindasamy,   Ramu.
Using an augmented profit function framework designed to account for externalities related to chemical use in agriculture, this paper explains the chemical use choices of farmers in an urban fringe farming environment. It further estimates empirical logit models of reduced insecticide, fungicide, herbicide, and fertilizer usage. Results suggest that farmers who perceive their regulatory environment to be strict, who have experienced right-to-farm conflicts, and who have farms larger in size are more likely to reduce their chemical use over time, vis-à-vis other farmers. The results also suggest the importance of other farm structural and business climate factors in determining chemical use reduction choices.
Tipo: Journal Article
Palavras-chave: Chemical use; Sustainable agriculture; Herbicides; Fungicides; Fertilizer; Pesticides; Urban fringe; Agricultural and Food Policy; Agricultural Finance; Environmental Economics and Policy; Farm Management; Production Economics.
Ano: 2010
URL: http://purl.umn.edu/95646

ECONOMIC ANALYSIS OF HERBICIDE CONTROL OF LEAFY SPURGE (EUPHORBIA ESULA L.) IN RANGELAND
Provedor de dados: 31
Autores: Bangsund,   Dean A.; Leitch,   Jay A.; Leistritz,   F. Larry.
Leafy spurge (Euphorbia esula L.), a widely established exotic, noxious, perennial weed, is a major threat to the viability of commercial grazing and beneficial outputs of wildlands in the Upper Great Plains.  Herbicide treatments are often recommended based upon measures of physical control rather than on economic criteria.  Considering the wide geographic variation of leafy spurge infestations, the range of herbicide control alternatives, and the long-term consequences this weed creates, a need exists to assess the economics of herbicide control.  A deterministic, bioeconomic model was developed to evaluate the economic viability of current herbicide control strategies for leafy spurge.  Only under liberal assumptions and optimistic projections does...
Tipo: Working or Discussion Paper
Palavras-chave: Leafy spurge; Herbicides; Control; Economics; Resource /Energy Economics and Policy.
Ano: 1996
URL: http://purl.umn.edu/23314

Conservation Tillage, Pesticide Use, and Biotech Crops in the U.S.A.
Provedor de dados: 31
Autores: Fernandez-Cornejo,   Jorge; Hallahan,   Charles B.; Nehring,   Richard F.; Wechsler,   Seth James; Grube,   Arthur.
This paper presents the first part of an ongoing project whose objective is to present a long term relationship between conservation tillage, adoption of GE crops and pesticide use for major crops in the United States. In addition, the project aims to provide some innovative tests on causality using a panel data set.  This paper presents preliminary results for soybeans.
Tipo: Conference Paper or Presentation
Palavras-chave: Conservation tillage; Biotechnology; Genetically engineered crops; Soybeans; Herbicides; Environmental Economics and Policy; Farm Management; Production Economics.
Ano: 2010
URL: http://purl.umn.edu/60941

Assessing Recent Trends in Pesticide Use in U.S. Agriculture
Provedor de dados: 31
Autores: Fernandez-Cornejo,   Jorge; Nehring,   Richard F.; Newcomb Sinha,   Elizabeth; Grube,   Arthur; Vialou,   Alexandre.
Replaced with revised version of paper 04/20/10.
Tipo: Conference Paper or Presentation
Palavras-chave: Pesticides; Herbicides; Insecticides; Hedonic models; Genetically engineered crops; Corn; Soybeans; Cotton; Crop Production/Industries; Environmental Economics and Policy; Farm Management; Production Economics; Productivity Analysis; Research Methods/ Statistical Methods.
Ano: 2009
URL: http://purl.umn.edu/49271

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

Modelling Environmental Effects of Agriculture: The Case of Organic Rye and Grey Partridge
Provedor de dados: 31
Autores: Miettinen,   Antti; Huhtala,   Anni.
Our optimal control model identifies economic reasons as to why farmland bird populations have dramatically declined in modern agricultural landscapes. By integrating recreational wildlife values into farm level decision-making on arable crop choice and herbicide use, we derive those economic instruments needed for creating suitable conditions for game bird species on farmland. Based on the Finnish data available on the grey partridge (Perdix perdix), we illustrate how the optimal acreage subsidy for organically-grown areas, herbicide tax rates and the hunting licence fee could be estimated in monetary terms. Finally, we discuss the benefits and costs of cultivating organic cereals which will enhance preservation of the grey partridge.
Tipo: Conference Paper or Presentation
Palavras-chave: Environmental benefits; Grey partridge; Herbicides; Optimal control; Rye; Environmental Economics and Policy; Q57; Q18; H41.
Ano: 2005
URL: http://purl.umn.edu/24462

Impact of GE Crop Adoption on Quality-Adjusted Herbicide Use in U.S. Corn Production
Provedor de dados: 31
Autores: Nehring,   Richard F.; Martin,   Andrew; Fernandez-Cornejo,   Jorge; Hallahan,   Charles B.; Vialou,   Alexandre; Wechsler,   Seth James; Grube,   Arthur.
This paper presents findings on the use of HT corn and quality-adjusted herbicide use for 12 key corn producing states using a panel data set for 1986-2008. Our preliminary findings indicate an insignificant impact of HT corn on herbicide use, conditioning or accounting for HT corn with other important drivers of corn herbicide use: HT soy, corn output price, glyphoste price, nonherbicide glyponsate price, and percentage of continuous corn and low-till corn. However, we find a positive and significant impact of HT corn on herbicide use in selected states, using regional interaction terms.  We use econometric techniques to avoid spurious regression results. Other preliminary runs indicated that the results hold when running the US and regional interactions...
Tipo: Conference Paper or Presentation
Palavras-chave: HT-corn; Herbicides; Weed resistance; Glyphosate; Corn; Environmental Economics and Policy; Farm Management; Production Economics.
Ano: 2011
URL: http://purl.umn.edu/103369

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

Striga Management through Herbicide Resistance: A Public-Private Partnership in Action
Provedor de dados: 31
Autores: Woomer,   Paul L.; Savala,   Canon N.
Striga is an indigenous parasitic weed that attacks cereals and other crops in Africa.  In maize croplands alone, Striga infests over 2.3 million ha resulting in 1.6 million tons of grain loss worth US $383 million annually.  An innovative approach to controlling the parasite was to induce herbicide resistance in maize and to coat the seed with herbicide to provide chemical protection from infection.  This breakthrough that was realized after 12 years of collaborative research and development by the International Maize and Wheat Centre (CIMMYT), the Kenya Agricultural Research Center (KARI) and the Weizmann Institute of Science in Israel, is now ready for deployment in Sub-Saharan Africa.  This effort is most advanced in Kenya, where one variety of the...
Tipo: Conference Paper or Presentation
Palavras-chave: Africa; Herbicides; Maize; Striga; Agricultural and Food Policy; Community/Rural/Urban Development; Environmental Economics and Policy; Food Consumption/Nutrition/Food Safety; Food Security and Poverty; Health Economics and Policy; Land Economics/Use; Marketing; Productivity Analysis; Research and Development/Tech Change/Emerging Technologies.
Ano: 2008
URL: http://purl.umn.edu/52184

Chemical control of stalk regrowth in glyphosate-resistant transgenic cotton
Provedor de dados: 91
Autores: Ferreira,Alexandre C. de B.; Bogiani,Julio C.; Sofiatti,Valdinei; Silva Filho,João L. da.
ABSTRACT Cotton stalk regrowth must be controlled after harvest to ensure the phytosanitary quality and sustainability of cotton farming systems. Mechanical destruction generally does not conform to the no-tillage system, and the control of cotton stalk regrowth by herbicides is little studied in Brazil. The objective of this study was to evaluate the efficiency of herbicides to control glyphosate-resistant transgenic cotton stalk regrowth. The study was conducted in three environments of the Brazilian Cerrado region, two in Santa Helena de Goiás (SHGO), during 2013 and 2014, and one in Luís Eduardo Magalhães (LEM-BA) in 2014. In each of the three environments, the experiment was carried out in a randomized complete block with four replications. Each...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gossypium hirsutum; Transgenic; Stalk regrowth; Herbicides; Environment.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662018000800530

Residual effect of imazapyr + imazapic on cotton grown in succession to soybean
Provedor de dados: 91
Autores: Ribeiro,Samia R. de S.; Souza,Amanda dos S.; Leal,Jéssica F. L.; Borella,Junior; Araujo,André L. S.; Pinho,Camila F. de.
ABSTRACT The long residual period of pre-emergent herbicides can interfere with successor crops, causing a phenomenon named carryover. This study evaluated the residual effect of imazapyr + imazapic herbicides on cotton crop grown in succession to soybean. The experiment was conducted between September 2016 and March 2017, in a randomized block design with 4 replicates, where the treatments were four doses of imazapyr + imazapic, 75, 150, 225 and 300 g a.i. ha-1, and the control. The analyzed variables were chlorophyll a fluorescence, shoot height, root length and volume, dry shoot mass and root dry mass. The data were submitted to analysis of variance and Tukey’s test, at p ≤ 0.05. The reduction in photosynthetic performance indexes for treatments of 150,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gossypium hirsutum L.; Imidazolinones; Herbicides.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662019000600400

Residual effect of mixture of glyphosate and 2,4-D in winter maize in different soil textures
Provedor de dados: 91
Autores: Gomes,Schaianne A.; Arantes,Sayonara A. do C. M.; Andrade,Ednaldo A. de; Arantes,Kelte R.; Viana,Daniela N.; Pereira Junior,Cezar da C.
ABSTRACT To increase the efficiency in the control of weeds, it is common the use of a mixture of the herbicides glyphosate and 2,4-D in the desiccation. This paper aimed to evaluate the residual effect of these two herbicides on the development of maize plants, in soils of different textures. The experiment was conducted in a greenhouse, in 2015, in a completely randomized design in a 2 x 2 x 7 factorial scheme, corresponding to two soils (Red Yellow Latosol and Quartzarenic Neosol), two herbicide application times (5 and 10 days before maize sowing) and seven doses of herbicides (recommended dose of glyphosate, recommended dose of 2,4-D; mixing the recommended doses of glyphosate and 2,4-D; two, ten and fifty times the recommended doses in admixture; and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Phytotoxicity; Herbicides; Red Yellow Latosol; Quartzarenic Neosol.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000500317

Growth, production and quality of pineapple in response to herbicide use
Provedor de dados: 94
Autores: Maia,Leonardo Carvalho Brant; Maia,Victor Martins; Lima,Mário Henrique Melo e; Aspiazú,Ignacio; Pegoraro,Rodinei Facco.
In pineapple fields, weed competition is exacerbated by the fact that the crop is small and has a very slow vegetative development. The objective of this study was to determine the effects of herbicides on growth, yield and quality of pineapple, cultivar 'Pérola'. The experimental design was in randomized blocks with four treatments and four replications. Treatments consisted of weeding by hoe and the herbicides diuron; fluazifop-p-butyl and atrazine + S-metolachlor applied in post-emergence. The characteristics evaluated monthly during the vegetative stage were stem diameter, D-leaf length, number of leaves, number of emitted leaves and percentage of natural floral induction. In the reproductive phase, evaluations were made of average fruit weight (g)...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ananas comosus var. comosus; Weeds; Herbicides; 'Pérola'.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452012000300020

Nitrogen loss in Brachiaria decumbens after application of glyphosate or glufosinate-ammonium
Provedor de dados: 63
Autores: Damin,Virginia; Franco,Henrique Coutinho Junqueira; Moraes,Milton Ferreira; Franco,Ademir; Trivelin,Paulo Cesar Ocheuze.
Nitrogen losses from the soil-plant system may be influenced by herbicide applications. In order to evaluate N loss in brachiaria (Brachiaria decumbens) after application of the herbicides glyphosate and glufosinate-ammonium, an experiment was carried out in a greenhouse as a completely randomized design, with three treatments and six replicates. Treatments were as follows: i) desiccation of brachiaria-plants with glyphosate; ii) desiccation of brachiaria-plants with glufosinate-ammonium; and iii) control, without herbicide application. The plants were cultivated in 4 kg pots of sandy soil and fertilized with ammonium sulfate- 15N, (200 mg kg-1) in order to quantify the allocation of the fertilizer-N and its recovery in the soil-plant system. Plants...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: 15N; Ammonium exchange; Gramineae; Herbicides.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162008000400012

Control of algal growth on greenhouse surfaces using commercial algaecides
Provedor de dados: 63
Autores: Berthold,David Erwin; Elazar,Ariel; Lefler,Forrest; Marble,Christopher; Laughinghouse IV,Haywood Dail.
ABSTRACT Greenhouses and nurseries provide ideal environments for facilitating the formation of nuisance algal mats. Algal growth poses safety concerns to horticulturists and stimulates the propagation of unwanted plant pests and pathogens. To date, few strategies and data are available to effectively manage algal problems. The effectiveness of five algaecides was tested on two varying surfaces of greenhouses in situ to elucidate the efficacy of chemical methods of removing algae. Moreover, Nostoc commune (Vaucher ex Bornet &amp; Flahault) was treated on ceramic tiles in vitro , as it is a common alga in greenhouses and nurseries. We found that each algaecide had different effects, depending on the chemical applied, the surface to which the chemical was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nostoc commune; DNA; Cyanobacteria; Herbicides; Management.
Ano: 2021
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000101601

การใช้สารกำจัดวัชพืชกลูโฟซิเนทในข้าวโพดหวาน
Provedor de dados: 106
Autores: Sodsai Changsaluk; Tosapon Pornprom; Naroon Waramitr; Rungsit Suwanmonkha.
Experiment on post-emergence herbicide, glufosinate in sweet corn production field conducted at the National Corn and Sorghum Research Center during November 2008-January 2010. The objective of this experiment was to study on the efficiency of herbicides and their affect on sweet corn hybrid, Insee 2 variety. The experiment laid out in RCBD, composed of 10 treatments, with 3 replications. The results revealed that weed found in the experiment were purple nutsedge (Cyperus rotundus), wild poinsettia (Euphorbia heterophylla), tropical spiderwort (Commelina benghalensis) and Itchgrass (Rottboellia cochinchinensis). The application of glufosinate at the rate of 800-1,400 g/rai, as post-emergence herbicide gave good weed control of 80-86 percent, and better...
Palavras-chave: Sweet corn; Herbicides; Weed Control; Post-emergence; ข้าวโพดหวาน; วัชพืช; สารกำจัดวัชพืช; กลูโฟซิเนท; การกำจัดวัชพืช; ผลผลิต; คุณภาพ.
Ano: 2010
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4685

การควบคุมวัชพืชด้วยสารกำจัดวัชพืชในไร่ข้าวโพดเกษตรกร ปี 2552
Provedor de dados: 106
Autores: Sodsai Changsaluk; Rungsit Suwanmonkha; Somchai Pothisan; Somchai Lim-aroom.
Experiment on pre-emergence and post-emergence herbicide application for weed control in farmer's field conducted in Ban Yangrak, Khokcharoen district, Lopburi province, during August-November 2008. The experiment laid out in RCB, composed of 10 treatments, with 3 replications. The objective of this experiment was to study on the efficiency of herbicides and their effect on field corn, KSX 4901 variety. The results revealed that weed found in the experiment were purple nutsedge (Cyperus rotundus), wild poinsettia (Euphorbia heterophylla), horse purslane (Portulaca oleracea), tropical spiderwort (Commelina benghalensis), running grass (Brachiaria reptans), and jungle rice (Echinichloa colona). The application of 2,4-D, glufosinate, fluroxypyr and paraquat...
Palavras-chave: Field corn; Farmer's field; Herbicides; Weed control; Pre-emergence; Post-emergence; ข้าวโพดเลี้ยงสัตว์; วัชพืช; สารกำจัดวัชพืช; ไร่ข้าวโพดเกษตรกร; การควบคุมวัชพืช; ประสิทธิภาพ; การเจริญเติบโต; ผลผลิต; คุณภาพ.
Ano: 2010
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4691

การใช้สารกำจัดวัชพืชแบบหลังงอกในข้าวโพดข้าวเหนียว
Provedor de dados: 106
Autores: Sodsai Changsaluk; Rungsit Suwanketnikom; Somchai Lim-aroon.
6 tables
Palavras-chave: Corn; Maize; Waxy corn; Weeds; Herbicides; Post-emergence herbicides; ข้าวโพด; ข้าวโพดข้าวเหนียว; การกำจัดวัชพืช; สารกำจัดวัชพืชแบบหลังงอก.
Ano: 2004
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4228

การกำจัดข้าวโพดดัดแปลงพันธุกรรมทนทานสารกำจัดวัชพืช NK 603 โดยใช้สารกำจัดวัชพืชพาราควอท และราวด์อัพ ในสภาพโรงเรือนทดลอง
Provedor de dados: 106
Autores: Prawit Puddhanon; Thaddao Anantachaiyong; Santhanee Rattithumkul.
14 ill., 3 tables
Palavras-chave: Corn; Maize; NK 603; Herbicides; Roundup tolerant corn; Paraquart; Roundup; ข้าวโพด; ข้าวโพดดัดแปลงพันธุกรรม; สารกำจัดวัชพืช; พาราควอท; ราวด์อัพ.
Ano: 2003
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4554

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

Progress report on witchweed (Striga asiatica (L.) O. Kuntze) a root parasitic weed of corn in Thailand
Provedor de dados: 106
Autores: Maneesa Teerawatsakul; Somchart Kanjanajirawong.
1 table
Palavras-chave: Corn; Maize; Witchweed; Striga asiatica; Root parasite; Herbicides; Weed control; Yields; ข้าวโพด; หญ้าแม่มด; ปรสิตที่เกาะรากพืช.
Ano: 1976
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3859

Effects of herbicides on field corn (Suwan 1)
Provedor de dados: 106
Autores: Umporn Suwunnamek.
1 table
Palavras-chave: Corn; Maize; Herbicides; Suwan 1; Weed control; Yields; ข้าวโพด; สารกำจัดวัชพืช; พันธุ์สุวรรณ 1.
Ano: 1975
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3830

การเคลื่อนย้ายและความคงทนของสารเคมีกำจัดวัชพืช กลุ่ม Amides ในพื้นที่ที่มีความลาดชันแตกต่างกัน ณ สถานีเกษตรหลวงอ่างขาง
Provedor de dados: 106
Autores: Montri Toopornsiri.
Thesis (M.Sc. in Agriculture)
Tipo: PhysicalObject
Palavras-chave: Herbicides; Amides; Persistance; Soil slopes; Royal Ang Khang Highland Agriculture Research Station; สารเคมีกำจัดวัชพืช; การเคลื่อนย้าย; ความคงทนต่อสาร; ผลตกค้าง; สารกลุ่มอะไมด์; พื้นที่ลาดชัน.
Ano: 1987
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5459

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

Study on effect of herbicides and methods of application on grain yields and some agronomic characters of corn
Provedor de dados: 106
1 ill., 2 tables
Palavras-chave: Corn; Maize; Herbicides; Grain yield; Agronomic characters; ข้าวโพด; สารกำจัดวัชพืช; ผลผลิต; ลักษณะทางการเกษตร.
Ano: 1971
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3760

Control of purple nutsedge in corn plantings
Provedor de dados: 106
Autores: Suwunnamek, U.
1 ill., 1 table
Palavras-chave: Corn; Maize; Purple nutsedge; Herbicides; Weed control; Yields; ข้าวโพด; แห้วหมู; สารกำจัดวัชพืช.
Ano: 1979
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3974

Optimized conditions for maize transformation of drought tolerant and herbicide resistant gene by biolistic bombardment
Provedor de dados: 106
Autores: Niran Juntawong; Panitee Saengmaneetham; Surasit Mangkorn.
4 ill., 1 table
Palavras-chave: Corn; Maize; Drought tolerance; Herbicides; Resistant gene; Biolistic bombardment; Optimized conditions; ข้าวโพด; ข้าวโพดเลี้ยงสัตว์; ข้าวโพดทนแล้ง; พันธุ์ต้านทาน; สารกำจัดวัชพืช; การถ่ายยีน.
Ano: 2004
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4208

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

รายงานความก้าวหน้างานด้านข้าวโพดหวานของกรมวิชาการ ประจำปี 1984
Provedor de dados: 106
Autores: Virasak Tepjun; Penkae Nattribhop; Tip Lekagul; Kunlaya Ratanathavorn; Suvit Pinthongkum; Vejil Kajornmalee; Narongsak Senanarong.
Palavras-chave: Corn; Maize; Sweet corn; Baby corn; S1 recurrent selection; Half-sib; Early maturity; Fertilizers; Herbicides; ข้าวโพดหวาน; ข้าวโพดฝักอ่อน; การปรับปรุงพันธุ์; พันธุ์เบา; ปุ๋ย; สารกำจัดวัชพืช.
Ano: 1984
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4467

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

การใช้ Dimethenamid ควบคุมวัชพืชในไร่เกษตรกร
Provedor de dados: 106
Autores: Sodsai Changsaluk; Rungsit Suwanketnikom; Somchai Lim-aroon; Somchai Potisan.
5 tables
Palavras-chave: Corn; Maize; Sweet corn; Weeds; Herbicides; Dimethenamid; Outreach research; ข้าวโพด; ข้าวโพดหวาน; การควบคุมวัชพืช; สารควบคุมวัชพืช; ไดเมทธีนามิด.
Ano: 2004
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4229

Economic analysis of corn production under different cultural practices
Provedor de dados: 106
Autores: Sarun Wattanutchariya; Sanit Kao-ian.
8 tables
Palavras-chave: Corn; Maize; Economic analysis; Costs; Profitability; Cultural practices; Corn production; Seed; Land preparation; Planting methods; Fertilizers; Herbicides; Insecticides; Thinning; Labor requirement; ข้าวโพด; การวิเคราะห์เศรษฐกิจ; การเพาะปลูก; การผลิต.
Ano: 1983
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4154

ประสิทธิภาพของสารเคมีป้องกันกำจัดวัชพืชในนาข้าวที่ใช้ทั่วไปใน สาธารณรัฐฟิลิปปินส์
Provedor de dados: 106
Autores: Ronnachai Changsri; Namuco, Ofelia; Migo, Teodoro; Johnson, David.
The efficacy of bispyribac sodium, fenoxaprop-p-ethyl + ethoxysulfuron, and  propanil+butachlor were evaluated in greenhouse and field experiments, Weed Science, Crop and Environmental Sciences Division, IRRI in February - April 2013. The field plots had high weed density that had 4-6 leaves when the herbicides were applied at 15 days after land preparation. In the greenhouse experiment we grew Echinocloa crus-galli, Ludwigia octovalvis, Cyperus iria, weedy rice (Oryza sativa f. spontanea Acc. 105798 (THA)), and rice cultivars KDML105 and IR64 in pots. At 7 days after rice and weed germination, we sprayed herbicides to the above-mentioned species using a research track sprayer. The results showed that bispyribac sodium and fenoxaprop-p-ethyl+ethoxysulfuron...
Tipo: PhysicalObject
Palavras-chave: Rice; Weed; Herbicides; Greenhouse; Trails; Bispyribac sodium; Fenoxaprop-p-ethyl; Ethoxysulfuron; Propanil; Butachlor; Philippines; ข้าว; วัชพืช; สารป้องกันกำจัดวัชพืช; ความเป็นพิษ; การควบคุมวัชพืช; เรือนทดลอง.
Ano: 2014
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5626

On-farm research for corn and sorghum during 1976
Provedor de dados: 106
Autores: Supot Faungfupong; Mongkol Yolprasarn; Bunpote Tasanasuwan.
13 tables
Palavras-chave: Corn; Maize; Sorghum; Variety trials; Land preparation; Planting methods; Fertilizers; Depth of planting; Herbicides; Weed control; Plant density; Yields; ข้าวโพด; ข้าวฟ่าง; การทดสอบปุ๋ย; สารกำจัดวัชพืช; ความลึกของการปลูก.
Ano: 1976
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3850

Outreach program
Provedor de dados: 106
Autores: Rachain Thiraporn; Supot Faungfupong; Somchai Lim-aroon; Kosol Kirdpoksub; Pipat Weerathaworn; Pasit Marayart; Wanchai Wongsa; Aneknan Machauy; Nisa Sitthibus; Wedderburn, Richard N.
10 tables
Palavras-chave: Corn; Maize; Sorghum; Outreach program; Fertilizers; Herbicides; ข้าวโพด; ข้าวฟ่าง; ทดสอบพันธุ์; ไร่นาเกษตรกร; ปุ๋ย; สารกำจัดวัชพืช; ผลผลิต.
Ano: 1985
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4589

On-farm research on corn during 1977
Provedor de dados: 106
Autores: Supot Faungfupong; Mongkol Yolprasarn.
26 tables
Palavras-chave: Corn; Maize; On farm research; Variety trials; Regional trials; Herbicides; Plant population; Fertilizers; Weed control; Seed quality; Plant densities; Yields; ข้าวโพด; การทดสอบพันธุ์; ความหนาแน่นของประชากร; การใส่ปุ๋ย; การควบคุมวัชพืช.
Ano: 1977
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/3939

Weed management strategies for castor bean crops
Provedor de dados: 1
Autores: Costa, Augusto Guerreiro Fontoura; Embrapa Algodão; Sofiatti, Valdinei; Embrapa Algodão; Maciel, Cleber Daniel de Góes; Universidade Estadual do Centro-Oeste; Poletine, Juliana Parisotto; Universidade Estadual de Maringá; Sousa, João Igor de; Universidade Estadual do Centro-Oeste,.
Castor bean crops are agriculturally relevant due to the quality and versatility of their oil, both for the chemical industry and for biodiesel production. Proper weed management is important for both the cultivation and the yield of castor bean crops; therefore, the intention of the present work is to review pertinent information regarding weed management, including the studies regarding weed interference periods, chemical controls for use in different crop production systems and herbicide selectivity, for castor bean crops. Weed science research for castor bean crops is scarce. One of the main weed management challenges for castor bean crops is the absence of herbicides registered with the Ministry of Agriculture, Livestock and Food Supply (MALFS)....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weed competition; Herbicides; Selectivity; Ricinus communis.
Ano: 2014
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17090

Weed Management, Folic Acid and Seaweed Extract Effects on Faba Bean Plants and Associated Weeds under Sandy Soil Conditions
Provedor de dados: 111
Autores: Dawood, Mona Gergis.
Two field experiments were conducted during the winter seasons of 2014/2015 and 2015/2016 at the agricultural experimental station of the National Research Centre, Nubaria, Egypt. Field evaluation of the efficiency of weed-control treatments (unweeded, oxadiargyl, metribuzin and two hand hoeing) and  bio-stimulants levels (folic acid at the rate of 10, 20 and 30 mg/L, and seaweed extract 100, 200 and 300 mg/L) and their interactive effects on faba bean growth, yield, yield attributes and chemical composition of seeds. Two hand hoeing achieved the highest weed depression expressed in the lowest dry matter of broadleaved, narrow-leaved and total weeds. Also, two hand hoeing was the most superior treatment in increasing plant height, shoot dry weight, leaf...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides; Seed yield; Folic acid; Seaweed; Vicia faba; Nutritive value.
Ano: 2018
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4376

Response of soybean cultivars to weed control treatments
Provedor de dados: 111
Autores: Dawood, Mona Gergis.
Two field experiments were conducted in two successive seasons, 2015 and 2016, at the experimental farm of the National Research Centre at Nubaria, Egypt, during summer seasons to determine weed management can improve soybean competitiveness with weeds, thus helping to achieve its yield potential. The experiment included three soybean cultivars ( Giza 111, Giza 21 and Crawford) and six weed control treatments, including oxadiargyl, butralin, metribuzin, bentazone + clethodium, two hand and a nonweeded treatment (control). Great reduction in dry weight of broadleaved, grassy and total weeds after 60 and 90 days from sowing was noticed in the plots cultivated with Giza 111 cultivars. Also, Giza 111 cultivars markedly produced greater plant height, SPAD, NAR,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides; Two hand hoeing; Growth; Yield; Oil percentage.
Ano: 2018
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4438

Use of Beta vulgaris allelopathic properties to control some weeds associated with Lupinus albus plant comparing with two recommended herbicides.
Provedor de dados: 111
Autores: El Wakeel, Mona Adel; Dawood, Mona Gergis; El-Rokiek, Kowthar Gad; El-Awadi, Mohamed El-Sayed; Saad El-Din, Samia Amin.
Two pot experiments were carried out during two successive winter seasons of (2016 / 2017) and (2017 / 2018) at the green house of National Research Centre (NRC), Giza, Egypt.  The experiments were conducted to compare the allelopathic effect of Beta vulgaris (shoot and root aqueous extracts at 3, 6, 9%) to chemical herbicides (clodinafop-Propargyl and Basagran at recommended dose (140 g/fed and 1.5 l/fed, respectively) in controlling weeds (Phalaris minor and Malva parviflora) associated with Lupinus albus plants. Results showed that all applied aqueous extracts caused reduction in two weeds biomass under investigation. Meanwhile, root aqueous extract was more effective than shoot aqueous extract in controlling weeds. It is worthy to mention that phenolic...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allelopathy; Weed control; Herbicides; Lupinus albus L.; Phalaris minor; Malva parviflora and  Beta vulgaris L.
Ano: 2019
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5486

Atrazine and nicosulfuron affect the reproductive fitness of the predator Podisus nigrispinus (Hemiptera: Pentatomidae)
Provedor de dados: 42
Autores: REIS,TATIANE C.; SOARES,MARCUS A.; SANTOS,JOSÉ B. DOS; SANTOS,CONCEIÇÃO A. DOS; SERRÃO,JOSE EDUARDO; ZANUNCIO,JOSÉ C.; FERREIRA,EVANDER A.
Abstract Herbicides can impact non-target metabolic pathways in natural enemies and lead to the reduction of these populations in the field. Behavioral characteristics, morphology and histology of reproductive structures and reproduction of females of Podisus nigrispinus (Dallas) (Hemiptera: Pentatomidae) were evaluated under the effect of the herbicides atrazine, nicosulfuron and the mixture of both. The number of mature oocytes per ovary was lower in females exposed to the herbicides atrazine, nicosulfuron and the mixture of both. Herbicides did not affect the longevity and mortality of P. nigrispinus, therefore, they are selective for this predator. On the other hand, herbicides can cause sublethal effects by affecting the reproduction of predators.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Behavior; Histology; Morphology; Reproduction; Herbicides.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703625

Germination behaviour of seeds from herbicide treated plants of Chenopodium album L.
Provedor de dados: 42
Autores: Tanveer,Asif; Nadeem,Muhammad A.; Ali,Asghar; Tahir,Muhammad; Zamir,Muhammad S.I.
The carry-over effect of sub-lethal herbicides was investigated on the germination of seeds collected from surviving Chenopodium album plants, which had received 1/8, 1/8 twice, 1/8 three times, 1/4, 1/2, 1/1 doses of either pre-emergence ioxynil or post-emergence bentazone in a previous onion (Allium cepa) crop. Seeds were also collected from surviving C. album plants, which had received 1/4, 1/2, 1/1 of either pre-emergence pendimethalin, propachlor and linuron, or 1/8, 1/8 twice, 1/8 three times, 1/4, 1/2, 1/1 of post-emergence ioxynil or linuron in a previous leek (Allium porrum) crop. Seeds of surviving plants were collected and tested for germination at temperature of 5, 10, 15, 20 and 25°C. The effect of different temperatures on the total number of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicides; Sub-lethal doses; Onion; Leek; Germination.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652009000400022

Glucose mineralization in soils of contrasting textures under application of S-metolachlor, terbuthylazine, and mesotrione, alone and in a mixture
Provedor de dados: 53
Autores: Mendes,Kassio Ferreira; Collegari,Stella Andressa; Pimpinato,Rodrigo Floriano; Tornisielo,Valdemar Luiz.
ABSTRACT Microbial adaptation may occur in surface soils under agricultural uses exposed to herbicides. However, little is known about herbicide mixture effects in the soil, especially in tropical regions like Brazil. The aim of this study was to evaluate glucose mineralization in soils of contrasting textures (sandy clay and sandy loam) from areas cultivated with maize under application of S-metolachlor, terbuthylazine and mesotrione, alone and in a mixture. The methodology was established according to the soil microorganisms: carbon transformation test with 14C-glucose solution (D-[U-14C] glucose) in biometric flasks. After the addition of 14C-glucose, the amount of 14C in cumulative CO2 of microbial respiration was measured several times during the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microbial respiration; Tropical condition; Herbicides.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000100152

Action of Canavalia ensiformis in remediation of contaminated soil with sulfentrazone
Provedor de dados: 53
Autores: Madalão,João Carlos; Souza,Matheus Freitas de; Silva,Alberto Antônio; Silva,Daniel Valadão; Jakelaitis,Adriano; Pereira,Gustavo Antônio Mendes.
ABSTRACT This study evaluated the jack bean (Canavalia ensiformis) as a potential remediator of sulfentrazone in the soil. The experiment was conducted under field conditions in a complete randomised block design. The treatments consisted of soils with and without herbicide application as well as the absence and presence of C. ensiformis cultivation associated with incorporation into the soil or the removal of shoots of C. ensiformis. Sorghum was planted as a bioindicator to evaluate the remediation efficiency of jack bean. Sulfentrazone application in areas without C. ensiformis cultivation decreased plants stands, productivity, and height of sorghum compared to treatments where C. ensiformis was cultivated. Sorghum cultivated in succession to C....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bioremediation; Soil decontamination; Herbicides; Residue; Contamination.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052017000200292

Increased immunoglobulin production in silver catfish (Rhamdia quelen) exposed to agrichemicals
Provedor de dados: 56
Autores: Kreutz,L.C.; Pavan,T.R.; Alves,A.G.; Correia,A.G.; Barriquel,B.; dos Santos,E.D.; Barcellos,L.J.G.
Fish vaccination has been increasingly exploited as a tool to control pathogen infection. The production of immunoglobulin following vaccination might be affected by several factors such as management procedures, water temperature, and the presence of xenobiotics. In the present study, we aimed to investigate the kinetics of immunoglobulin production in silver catfish (Rhamdia quelen) inoculated with inactivated Aeromonas hydrophila and kept at two different water temperatures (17.4±0.4° or 21.3±0.3°C). The effect of a second antigen inoculation and exposure of fish to sublethal concentrations of the herbicides atrazine and glyphosate at 10% of the lethal concentration (LC50-96h) on specific serum antibodies were also investigated. Antibodies to A....
Palavras-chave: Fish; Humoral response; Antibody production; Herbicides; Adjuvant.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2014000600499

Germination and mycelial growth of Bipolaris euphorbiae Muchovej &amp;amp; Carvalho as influenced by herbicides and surfactants
Provedor de dados: 58
Autores: Nemoto,Marta Cecília Mallasen; Nahas,Ely; Pitelli,Robinson Antonio; Coelho,Lisias.
Bipolaris euphorbiae Muchovej &amp;amp; Carvalho can be combined with herbicide in order to control a large spectrum of weed species, being a strong candidate for the biocontrol of Euphorbia heterophylla L. (milk weed). The fungus release can be combined with herbicide in order to control a broader spectrum of weed species. Thus, laboratory experiments were set up to study the feasibility of using tank mixes of B. euphorbiae spores with herbicides or surfactants recommended for soybean. Mycelial growth and conidia germination were evaluated in PDA medium enriched with the herbicides oxasulfuron (80 g/ha), glyphosate (4 L/ha), bentazon (1.5 L/ha), fomesafen (1 L/ha), chlorimuron-ethyl (80 g/ha), lactofen (1 L/ha) and imazetaphyr (1 L/ha), and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bipolaris euphorbiae; Mycelial growth; Conidia germination; Herbicides; Surfactants.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822002000400015

Simulation of control strategies for decision-making regarding Digitaria sanguinalis in glyphosate-resistant soybeans
Provedor de dados: 118
Autores: Oreja,Fernando H; Bastida,Fernando; Gonzalez-Andújar,José L.
A bioeconomic model was developed for decision-making regarding large crabgrass (Digitaria sanguinalis) control in glyphosate-resistant soybeans in the Rolling Pampas ofArgentina. The model was used to evaluate the economic returns of four different glyphosate-based strategies for weed control. In the absence of herbicide application (T1), the soil seed bank increases to an equilibrium density of 12,079 seeds m-2 in three years. A single herbicide application during the early stages of the crop (T2), which was intended to be highly effective in the control of an early weed cohort, allows a late, unaffected cohort to produce sufficient seeds to maintain population densities in the soil seed bank. A single, delayed herbicide application (T3), which was...
Tipo: Journal article
Palavras-chave: Crop-weed competition; Digitaria; Herbicides; Glycine max; Large crabgrass; Sensitivity analysis; Transgenic crop.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000200006

Herbicides with natural and synthetic biostimulants in spring wheat
Provedor de dados: 65
Autores: Matysiak,Kinga; Miziniak,Wojciech; Kaczmarek,Sylwia; Kierzek,Roman.
ABSTRACT:  Although the knowledge on agricultural using of biostimulants increases, there is still little information on their interactions with other chemicals i.e. herbicides. The aim of the study was to assess the influence of popular herbicides (MCPA + dicamba, dicamba + triasulfuron, florasulam+2,4-D) used with and without biostimulants based on seaweed extract (Kelpak) and nitrophenols (Asahi) on weed control efficiency, yield and quality of the crop. Field trial was carried out in the years 2014 and 2015 in the Institute of Plant Protection - National Research Institute in Poznan (Poland). The experiment was established on spring wheat cv.‘Torridon’, in 4 replications, using randomized block design. In the experiment two variants of application were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biostimulant; Seaweeds; Algae extract; Herbicides; Tank mixtures; Wheat.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782018001100204