Consulta: subjectFacets:"Weed"
Registros recuperados: 141
Data/hora: 02/06/2024 19:04:57

Efecto de la melaza en los componentes del rendimiento en frijol (Phaseolus vulgaris L.)
Provedor de dados: 32
Autores: Ayanegui Méndez, Segundo Raúl.
La información experimental del presente trabajo se obtuvo al evaluar en una localidad tres variedades de fríjol (Phaseolus vulgaris L.) de las cuales se encuentra la variedad Canario -107 como precoz, la variedad Negro – Chapingo como intermedia y la variedad Negro – 150 como tardío.  El rendimiento depende de componentes que surgen del ciclo biológico de la variedad, de la arquitectura de la planta, de las características de la vaina y también de las cualidades del grano por semilla. Aunque todos los componentes participan en el rendimiento de la planta, no todos son de la misma magnitud, ni reciben el mismo daño cuando el cultivo compite con malezas adaptadas a la región. Para conocer la magnitud de estos efectos, durante el ciclo agrícola del 2006, se...
Tipo: Tesis
Palavras-chave: Frijol; Componentes del rendimiento; Maleza; Maestría; Genética; Bean; Yield Components; Weed.
Ano: 2008
URL: http://hdl.handle.net/10521/1589

Multiple introductions and gene flow in subtropical South American populations of the fireweed, Senecio madagascariensis(Asteraceae)
Provedor de dados: 74
Autores: Mäder,Geraldo; Castro,Luana; Bonatto,Sandro Luis; Freitas,Loreta Brandão de.
Abstract Non-indigenous plants exhibit different attributes that make them aggressive competitors with indigenous plants and serious threats to biodiversity.Senecio madagascariensis (fireweed, Asteraceae), a native from southern Africa, is a strong competitor in agricultural activities and has toxic alkaloids that may result in high cattle mortality. In Brazil, this weed was collected for the first time in 1995 and has since spread quickly throughout the Pampas region. To better understand the invasion of the fireweed in South America, we used a genetic characterization with internal transcribed spacer (ITS) and microsatellite markers. Based on the ITS data, the southern Brazil populations of S. madagascariensis shared genetic homology with samples taken...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Microsatellites; ITS; Pampas; Weed; Spread.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572016000100135

Selectivity of pre-emergence herbicides in potato cv. Innovator
Provedor de dados: 75
Autores: Luz,José Magno Q; Fonseca,Luciano F; Duarte,Ivaniele N.
ABSTRACT Herbicide tolerance differs among potato cultivars. Thus, pre-emergence herbicides in potatoes need to be studied. We evaluated weed control, selectivity and potato yield of cv. Innovator with the herbicides clomazone, metribuzin and linuron. The experimental design was randomized blocks with four replications. One experiment was installed in 2014 (experiment 1, 5 treatments) and another in 2015 (experiment 2, 7 treatments), irrigated by central pivot in Perdizes-MG, Brazil. In experiment 1 treatments consisted of a control (T1), a hoed control (T2), clomazone (360 g ha-1) (T3), metribuzin (480 g ha-1) (T4), and linuron (990 g ha-1) (T5). The treatments in experiment 2 repeated those in experiment 1 (T1 to T5) and added clomazone + metribuzin (360...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Solanum tuberosum; Yield; Weed.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000200223

Analise de DNA do virus da lagarta-da-soja (AgNPV): estudo comparativo entre quinze isolados geograficos.
Provedor de dados: 14
Autores: CASTRO, M. E. B. de; SOUZA, M. L. de; SIHLER, W.; OLIVEIRA, M. D. de; NAKAMURA, E. S.
bitstream/item/90531/1/1715-Analise-de-DNA.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Bioinseticida; Praga %% Plant; Weed; Bioinseticide.; Anticarsia Gemmatalis; Baculovirus; Planta.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/174564

Recomendacoes tecnicas para a cultura da soja no Parana 1985/86.
Provedor de dados: 14
Autores: OCEPAR. Programa de Pesquisa (Cascavel, PR).
Manejo do solo; Clima; Cultivares; Populacao, densidade e epocas de semeadura; Instalacao da lavoura; Controle de plantas daninhas; Manejo de pragas; Controle de doencas; Colheita; Tratamento de sementes.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Recomendacao tecnica; Cultivar; Rotacao; Brasil; Planta daninha; Parana; Soybean; Technical recommendation; Variety; Pest; Disease; Harvest; Weed; Seed.; Colheita; Doença; Época de Semeadura; Pratica Cultural; Praga; Semente; Solo.; Soja; Brazil; Crop rotation; Soil; Sowing date.
Ano: 1985
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/448320

Espécies de Sorghum infestantes: importância e manejo em sistemas produtivos.
Provedor de dados: 14
Autores: CONCENCO, G.; MACHADO, L. A. Z.; CECCON, G.
bitstream/item/69595/1/COT2012180.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Planta daninha; Weed.
Ano: 2012
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/939023

Recomendacoes tecnicas para a cultura da soja na Regiao Central do Brasil.
Provedor de dados: 14
Autores: EMBRAPA. Centro Nacional de Pesquisa de Soja (Londrina, PR).
Solos e nutricao vegetal; Conservacao do solo; Correcao de solo e manutencao de fertilidade; Calagem; Qualidade do calcario e condicoes de uso; Correcao da acidez subsupercial; Adubacao em solos do Cerrado; Adubacao fosfatada; Adubacao potassica; Adubacao com micronutrientes; Adubacao foliar com macro e micronutrientes; Inoculacao; Plantas daninhas; Tecnologia de sementes; Estabelecimento de campo de semente; Colheita; Avaliacao; Manejo de pragas; Praticas culturais; Manejo do solo; Rotacao de culturas; Epoca de semeadura; Genetica e melhoramento; Fitopatologia.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Recomendacao tecnica; Adubacao fosfatada; Adubacao potassica; Planta daninha; Manejo de praga; Fitopatologia; Brasil; Soybean; Fertilizer; Seed; Inoculation; Weed; Genetic; Phytopathology; Pests management; Technical directions.; Adubação Foliar; Inoculação; Glycine Max; Genética; Melhoramento; Nutrição Vegetal; Pesquisa; Pratica Cultural; Semente; Soja; Solo.; Brazil; Crop management; Breeding; Plant nutrition; Soil.
Ano: 1991
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/447041

Manejo de plantas daninhas.
Provedor de dados: 14
Autores: CONCENCO, G.
bitstream/item/89142/1/MANEJO.GERMANI.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Planta daninha; Buva; Conyza spp.; Controle; Weed; Management; Control.; Manejo.
Ano: 2013
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/965795

Recomendacoes tecnicas sobre gergelim; regiao Centro-Sul do Brasil.
Provedor de dados: 14
Autores: EMBRAPA. Centro Nacional de Pesquisa do Algodao (Campina Grande, PB).
bitstream/item/36448/1/Folheto-cnpa-0316.pdf
Tipo: Recomendação Técnica (INFOTECA-E)
Palavras-chave: Uso; Cultivares; Tipo; Epoca; Controle; Brasil; Centro Sul; Sesame; Use; Cultivar; Type; Plantation; Season; Weed; Control; Pest; Disease; Harvest; Productivity.; Colheita; Erva Daninha; Doença; Gergelim; Praga; Produtividade; Plantio; Sesamum Indicum; Solo.; Soil.
Ano: 1993
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/262772

Recomendacoes tecnicas para o cultivo de soja em regioes de baixas latitudes (&lt; 12oS).
Provedor de dados: 14
Autores: REUNIAO DO PROGRAMA NACIONAL DE PESQUISA DE SOJA REGIOES NORTE-NORDESTE, 11., 1989, Natal.
Calagem e adubacao; Cultivares recomendadas; Populacao, densidade e epocas de semeadura; Instalacao da lavoura; Tecnologia de sementes; Estabelecimento de campo de semente; Colheita; Avaliacao da qualidade das sementes; Fitopatologia; Recomendacoes gerais; Tratamento de sementes; Cancro da haste; Plantas daninhas; Manejo de pragas.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Recomendacao tecnica; Cultivar; Planta daninha; Congresso; Brasil; Regiao norte; Regiao nordeste; Soybean; Technical recommendation; Inoculation; Fertilization; Variety; Seed; Harvest; Disease; Weed; Pest; Management; Congress; North region; Northeast region.; Adubação; Calagem; Colheita; Doença; Inoculação; Manejo; Pesquisa; Praga; Semente; Soja.; Brazil; Liming; Research.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/450610

Ata e resumos.
Provedor de dados: 14
Autores: REUNIAO DE PESQUISA DE SOJA DA REGIAO SUL, 12., 1984, Pelotas.
Sessao de abertura; Sessao de encerramento; Comissao de genetica e melhoramento; Ecologia, fisiologia e praticas culturais; Entomologia; Nutricao vegetal e uso do solo; Tecnologia e producao de sementes/fitopatologia; Controle de plantas daninhas; Relacao dos participantes.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Planta daninha; Congresso; Brasil; Regiao Sul; Soybean; Weed; Seed; Disease; Insect; Cultural practice; Congress; South region.; Doença; Fisiologia; Inseto; Melhoramento; Pesquisa; Pratica Cultural; Semente; Soja.; Brazil; Breeding; Research.; Physiology.
Ano: 1985
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/450568

Plantas invasoras em pastagens cultivadas da Amazônia: estratégias de manejo e controle.
Provedor de dados: 14
Autores: DIAS FILHO, M. B.
bitstream/item/42216/1/Documetnos-52-CPATU-.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Planta invasora; Controle; Banco de semente; Queima; Roçagem; Brasil; Cultivated pasture; Weed; Management; Control; Seed bank; Dispersal; Herbicide.; Dispersão; Herbicida; Manejo; Pastagem Cultivada; Vismia Guianensis.; Mimosa pudica; Solanum crinitum; Amazonia; Lantana camara; Burning; Mowing.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/387699

Controle de plantas daninhas em milho e sorgo: experimentos 1978/79.
Provedor de dados: 14
Autores: SILVA, J. B. da; VIANA, A. C.
bitstream/item/47154/1/Controle-plantas-1.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Planta daninha; Controle; Maize; Weed; Control.; Milho; Sorghum Bicolor; Sorgo; Zea Mays.
Ano: 1979
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/478732

Sistemas de controle de plantas daninhas na cultura do arroz irrigado em Roraima.
Provedor de dados: 14
Autores: MEDEIROS, R. D. de.
bitstream/item/175377/1/cot00397-arroz-roberto.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Cultura; Controle; Brasil; Roraima; Irrigated rice; Production; Weed; Control.; Arroz Irrigado; Erva Daninha; Produção Vegetal.; Brazil.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/688073

Recomendacoes tecnicas para o cultivo da soja: areas do Sul do Mato Grosso do Sul, Sudoeste, Norte e Oeste do Parana Zonas 15, 61, 75, 76, 77 e 92.
Provedor de dados: 14
Autores: BRASIL. Ministerio da Agricultura e Reforma Agraria.
A soja e a regiao; Manejo e conservacao do solo; Recomendacoes de cultivares e qualidade das sementes; Praticas culturais; Colheita.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Armazenagem; Planta daninha; Controle; Brasil; Parana; Sao Paulo; Mato Grosso do Sul; Soybean; Management; Conservation; Recommendation; Variety; Quality; Seed; Cultural practice; Harvest; Fertilization; Weed; Control; Disease; Loss; Pest; Adubação; Calagem; Doença; Época de Plantio; Perda; Plantio Direto; Praga; Rotação de Cultura; Semeadura; Soja; Brazil; Crop rotation; Liming; No-tillage; Soil; Sowing date; Storage.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/445250

ILPF como estratégia para o manejo de plantas daninhas.
Provedor de dados: 14
Autores: CONCENCO, G.
bitstream/item/135773/1/Revista-Produtor-Rural-p.-48.pdf
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Integração lavoura-pecuária; Integrated crop-livestock; Planta daninha; Weed.
Ano: 2015
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1031866

Controle de plantas daninhas no arroz irrigado.
Provedor de dados: 14
Autores: MEDEIROS, R. D.; CORDEIRO, A. C. C.; PEREIRA, R. L.; FREITAS, J. Q.
Tipo: Folhetos
Palavras-chave: Planta daninha; Controle; Weed; Control; Arroz Irrigado; Erva Daninha; Rice.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/687516

Recomendações técnicas para a cultura da soja no Paraná 1996/97.
Provedor de dados: 14
Autores: EMBRAPA. Centro Nacional de Pesquisa de Soja (Londrina, PR).
Situacao mundial da soja; Exigencias climaticas; Rotacao de culturas; Manejo de solo; Correcao e manutencao da fertilidade do solo; Cultivares; Cuidados na aquisicao e na utilizacao da semente; Tratamento e inoculacao de sementes; Instalacao da lavoura; Controle de plantas daninhas; Manejo de pragas; Doencas e medidas de controle; Retencao foliar ("haste verde"); Colheita; Tecnologia de sementes.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Aspecto economico; Rotacao; Cultivar; Planta daninha; Inseto praga; Perdas na colheita; Brasil; Parana; Soybean; Economic situation; Variety; Seed; Weed; Insect pest; Disease; Harvesting losses.; Fertilidade do Solo; Doença; Semente; Soja.; Brazil; Crop rotation; Soil fertility.
Ano: 1996
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/449558

Recomendações técnicas para a cultura da soja na região central do Brasil - 1994/95.
Provedor de dados: 14
Autores: EMBRAPA. Centro Nacional de Pesquisa de Soja (Londrina, PR).
Perspectivas do aumento da oferta brasileira de soja no mercado mundial: a potencialidade dos cerrados; Recomendacoes tecnicas: Exigencias climaticas; Rotacao de culturas; Manejo do solo; Correcao e manutencao da fertilidade do solo; Cultivares; Cuidados na aquisicao e na utilizacao da semente; Tratamento de sementes; Inoculacao; Epoca de semeadura; Populacao de plantas e espacamento; Controle de plantas daninhas; Manejo de pragas; Doencas e medidas de controle; Retencao foliar (haste verde); Colheita.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Cultivar; Recomendacao; Brasil; Regiao central; Rotacao; Seed; Soybean; Planta daninha; Retencao foliar; Inoculation; Weed; Pest; Disease; Harvest; Retention.; Colheita; Clima; Cerrado; Doença; Inoculação; Praga; Semente; Semeadura; Soja; Solo.; Climate; Crop rotation; Brazil; Soil; Sowing.
Ano: 1994
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/449263

Populacao de plantas e doses de herbicidas no controle de plantas daninhas em algodoeiro herbaceo.
Provedor de dados: 14
Autores: AZEVEDO, D. M. P. de; BELTRAO, N. E. de M.; NOBREGA, L. B. da; VIEIRA, D. J.
bitstream/item/53978/1/BOL30-1994.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Herbaceo; Densidade Populanal; Herbiciada; Brasil; Paraiba; Anual; Weed; Chemical; Control; Plant; Herbicide.; Algodão; Controle Químico; Erva Daninha; Herbicida.; Gossypium Hirsutum; Cotton; Density.
Ano: 1994
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/267434

Eficacia de novos herbicidas no controle de plantas daninhas em algodoeiro herbaceo.
Provedor de dados: 14
Autores: NOBREGA, L. B. de; VIEIRA, D. J.; AZEVEDO, D. M. P. de; COSTA JUNIOR, D. de S.
bitstream/item/58836/1/COMTEC48.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Controle; Brasil; Paraiba; Weed; Control; Herbicide.; Algodão Herbáceo; Erva Daninha; Herbicida.; Gossypium Hirsutum; Sousa; Cotton.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/269933

Misturas de herbicidas e populacoes de plantas no controle de plantas daninhas na cotonicultura herbacea.
Provedor de dados: 14
Autores: NOBREGA, L. B. da; AZEVEDO, D. M. P. de; BELTRAO, N. E. de M.; VIEIRA, D. J.
bitstream/item/58835/1/COMTEC46.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Brasil; Campina Grande; Weed; Herbicide.; Algodão; Erva Daninha; Herbicida.; Gossypium Hirsutum; Sousa; Cotton.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/269934

Plantas daninhas prevalecentes em cultivos de tomate na regiao de Pacaraima, Roraima.
Provedor de dados: 14
Autores: LUZ, F. J. de F.
Tipo: Folhetos
Palavras-chave: Brasil; Pacaraima; Roraima; Tomato; Production; Weed; Erva Daninha; Produção; Tomate; Brazil.
Ano: 1997
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/688067

Sintomas e diagnose de fitotoxicidade de herbicidas na cultura da soja.
Provedor de dados: 14
Autores: GAZZIERO, D. L. P.; NEUMAIER, N.
Fitotoxicidade; Diagnose de fitotoxicidade; Sintomas de fitotoxicidade; Danos causados por outros fatores; Relacao de herbicidas por grupo quimico.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Planta daninha; Brasil; Parana; Weed; Herbicide; Phitotoxicity.; Controle Químico; Fitotoxicidade; Herbicida.; Brazil; Chemical control.
Ano: 1985
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/447406

Efeito da matocompetição na produção de sorgo-sacarino.
Provedor de dados: 14
Autores: LINHARES, L. T.; FAVARIN, E. H. V.; DIAS, K. N.; SILVA, C. J. da; CONCENCO, G.
bitstream/item/148483/1/13-efeito....pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Arranjo de plantas; Herbicidas; Planta daninha; Plant arrangement; Herbicide; Weed.
Ano: 2016
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1054242

Controle de plantas daninhas na cultura do algodoeiro herbaceo precoce em cultivo isolado e em consorcio com feijao caupi.
Provedor de dados: 14
Autores: NOBREGA, L. B. da; BELTRÃO, N. E. de M.; AZEVEDO, D. M. P. de; VIERA, D. J.
bitstream/item/58291/1/Boletim-de-pesquisa-28.pdf
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Caupi; Controle; Consorciacao; Brasil; Paraiba; Souza; Weed; Herbicide; Cowpea; Control.; Algodão Herbáceo; Erva Daninha; Herbicida; Gossypium Hirsutum; Planta; Vigna Unguiculata.; Intercropping.
Ano: 1993
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/264935

Recomendacoes tecnicas para o cultivo de soja: Nordeste de Sao Paulo, Minas Gerais, Bahia, Maranhao e Piaui Zonas 55, 61, 91 e 92.
Provedor de dados: 14
Autores: BRASIL. Ministerio da Agricultura e Reforma Agraria.
A soja e a regiao; Manejo e conservacao do solo; Recomendacoes de cultivares e qualidade das sementes; Praticas culturais; Colheita.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Armazenagem; Planta daninha; Controle; Brasil; Sao Paulo; Minas Gerais; Bahia; Maranhao; Piaui; Soybean; Management; Conservation; Recommendation; Variety; Quality; Seed; Cultural practice; Harvest; Fertilization; Weed; Control; Disease; Pest; Loss; Adubação; Calagem; Doença; Época de Plantio; Perda; Plantio Direto; Praga; Soja; Brazil; Liming; No-tillage; Soil; Sowing date; Storage.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/445249

Métodos de controle de plantas daninhas na cultura do algodoeiro (Gossypium hirsutum, marie galante, Hutch) nos Estados da Paraíba e Rio Grande do Norte: informações gerais.
Provedor de dados: 14
Autores: BELTRÃO, N. E. de M.; AZEVEDO, D. M. P. de.
Definicao dos metodos de controle de plantas daninhas; Vantagens e desvantagens do metodo quimico; Requerimentos basicos para utilizacao do metodo quimico; Calibragem propriamente dita; Recomendacoes tecnicas.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Controle; Arboreo; Consorciacao; Caupi; Phaseolus vulgares; Weed; Perennial cotton; Control; Maize; Cowpea; Brasil; Rio Grande do Norte; Paraiba.; Algodão; Feijão; Erva Daninha; Gossypium Hirsutum; Milho; Zea Mays.; Intercropping.
Ano: 1979
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/262422

Recomendações técnicas para a cultura da soja na Região Central do Brasil - 1995/96.
Provedor de dados: 14
Autores: EMBRAPA. Centro Nacional de Pesquisa de Soja (Londrina, PR).
Perspectivas do aumento da oferta brasileira de soja no mercado mundial: A potencialidade dos cerrados; Recomendações técnicas: Exigências climáticas; Rotação de culturas; Manejo do solo; Correção e manutenção da fertilidade do solo; Cultivares; Cuidados na aquisição e na utilização da semente; Tratamento e inoculação de sementes; Época de semeadura; População de plantas e espaçamento; Controle de plantas daninhas; Manejo de pragas; Doenças e medidas de controle; Retenção foliar (haste verde); Colheita.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Recomendacao tecnica; Cultivar; Inoculacao de semente; Planta daninha; Controle; Rotacao de culturas; Brasil; Soybean; Technical recommendation; Disease; Pest; Weed; Control; Harvest; Fertilization.; Adubação; Colheita; Clima; Cerrado; Fertilidade; Doença; Pesquisa; Praga; Semeadura; Solo.; Soja; Crop rotation; Climate; Brazil; Research; Soil fertility; Savannas; Seed inoculation; Sowing date.
Ano: 1995
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/449421

Controle de plantas daninhas em algodoeiro no cerrado baiano.
Provedor de dados: 14
Autores: AZEVEDO, D. M. P. de; ALENCAR, A. R. de; BRANDÃO, Z. N.; JERÔNIMO, J. R.
bitstream/CNPA/16645/1/COMTEC188.PDF
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Algodão-Erva daninha-controle químico; Cotton-weed-chemical control; Weed; Herbicide.; Herbicida.
Ano: 2003
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/273445

Plantas invasoras de pastagens cultivadas na Amazônia.
Provedor de dados: 14
Autores: DANTAS, M.; RODRIGUES, I. A.
bitstream/item/28795/1/CPATU-BP1.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Planta invasora; Paragominas; Santana do Araguaia; Itacoatiara; Pará; Amazonas; Brasil; Cultivated pasture; Weed; Specie.; Análise Qualitativa; Análise Quantitativa; Erva Daninha; Espécie; Pastagem Cultivada; Planta Forrageira.; Amazonia; Qualitative analysis; Quantitative analysis.
Ano: 1980
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381167

Identificação e composição química de espécies de invasoras consumidas por bovinos em pastagens cultivadas em Paragominas, Pará.
Provedor de dados: 14
Autores: CAMARÃO, A. P.; SIMÃO NETO, M.; SERRÃO, E. A. S.; RODRIGUES, I. A.; LASCANO, C. E.
bitstream/item/41016/1/Boletim-Pesquisa-104-CPATU.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Paragominas; Pará; Brasil; Bovine; Weed; Sown pasture.; Bovino; Animal; Composição Química; Erva Daninha; Pastagem Cultivada.; Amazonia; Chemical composition.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383597

Recomendações técnicas para a cultura da soja no Paraná 1989/90.
Provedor de dados: 14
Autores: OCEPAR. Programa de Pesquisa (Cascavel, PR).
Cenário da soja; Manejo do solo; Rotação de culturas; Clima; Cultivares; População e densidade de semeadura; Épocas de semeadura; Instalação da lavoura; Controle de plantas daninhas; Manejo de pragas; Controle de doenças; Colheita; Retenção foliar ("haste verde").
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Recomendação técnica; Cultivar; Brasil; Paraná; Semeadura direta; Gesso agricola; Rotação; Planta daninha; Soybean; Technical recommendation; Cultural practice; Variety; Weed; Pest; Disease; Fungus; Harvest.; Acidez; Bactéria; Calagem; Colheita; Doença; Fungo; Praga; Pratica Cultural; Solo; Soja; Vírus.; Acidity; Crop rotation; Brazil; Gypsum; Liming; Soil; Sowing date.
Ano: 1989
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/448324

Manejo de plantas daninhas no consórcio milho-braquiária.
Provedor de dados: 14
Autores: CONCENCO, G.; SILVA, A. F. da.
bitstream/item/99439/1/Cap4.pdf
Tipo: Capítulo em livro técnico (INFOTECA-E)
Palavras-chave: Planta daninha; Weed; Intercropping culture.; Consorciação de Cultura.
Ano: 2013
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/982634

Pesquisas com plantas invasoras de pastagens: plano de ação 1996/2005.
Provedor de dados: 14
Autores: SOUZA FILHO, A. P. da S.; DUTRA, S.; GONÇALVES, C. A.
bitstream/item/197871/1/FL00362.pdf
Tipo: Outras publicações técnicas (INFOTECA-E)
Palavras-chave: Planta invasora; Pasture; Weed; Erva Daninha; Pastagem; Pesquisa; Research.
Ano: 1996
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/374329

Controle de plantas daninhas na cultura do sorgo.
Provedor de dados: 14
Autores: PEREIRA, F. T. F.; PEREIRA FILHO, I. A.; SANTOS, F. G. dos; RIBAS, P. M.
bitstream/item/36067/1/ct-15.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Planta daninha; Controle; Weed; Control.; Sorghum Bicolor; Sorgo.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/484394

Avaliação da eficiência de doses de Imazaquin em mistura com graminicidas, no controle das principais plantas invasoras da soja.
Provedor de dados: 14
Autores: ROMAN, E. S.
bitstream/item/158085/1/ID12158-1989-1990sojaresultados-p92-99.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Planta daninha; Brasil; Soybean; Weed; Herbicide.; Acanthospermum australe; Brachiaria Plantaginea; Bidens Pilosa; Controle Químico; Euphorbia Heterophylla; Herbicida; Richardia Brasiliensis.; Brazil; Sida rhombifolia; Chemical control.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/823942

Controle de Acanthospermum australe (Carrapicho rasteiro) e de Digitaria sanguinalis (Milhã ou capim colchão), na cultura da soja.
Provedor de dados: 14
Autores: ROMAN, E. S.
bitstream/item/134013/1/ID12162-1989-1990sojaresultados-p87-91.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Herbicide; Soybean; Weed.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/823946

O uso de herbicidas no controle de invasoras em vinhedos no Vale do Sub-médio São Francisco.
Provedor de dados: 14
Autores: ALBUQUERQUE, J. A. S. de; ALBUQUERQUE, T. C. S. de.
Dois experimentos foram conduzudos com herbicidas em um vinhedo sob condicoes irrigadas na regiao do Submedio Sao Francisco. Foram, testados diferentes herbicidas e suas combinacoes comparadas a capina manual. Os produtos usados e suas respectivas concentracoes foram os seguintes: Paraquat (0,8 lPA/ha), Paraquat (0,8 lPA/ha) + Diuron (1,0 kg PA/ha); Paraquat (0,8 lPA/ha) + Atrazine (2,0 kg PA/ha), Paraquat (0,8 lPA/ha) + Orizaline (3,0 kg PA/ha); Glyphosate (2,5 l PA/ha), Glyphosate (2,5 lPA/ha) + Diuron (1,0 kg PA/ha). Os resultados obtidos permitiram as seguintes conclusoes: os herbicidas nao causaram efeitos fitotoxicos aparentes nas videiras; uma unica aplicacao de Glyphosate isolado ou combinado com Diuron foi suficiente para que o vinhedo...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Planta daninha; Controle; Nordeste; Submédio São Francisco; Pest; Weed; Control; Grape.; Uva; Herbicida; Praga.; Herbicides.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/131340

Rasteirinha (Hybanthus parviflorus) - manejo químico
Provedor de dados: 14
Autores: CONCENCO, G.; MARQUES, R. F.; SANTOS, S. A. dos; PALHARINI, W. G.; ALVES, M. E. dos; MELO, T. S.
A rasteirinha (Hybanthus parviflorus [Mutis ex L.f.] Baill) vem ganhando importância agrícola por causa de sua tolerância a herbicidas. Não existem recomendações e nem herbicidas registrados e indicados no Brasil para o controle dessa espécie. O objetivo deste estudo, Portanto, foi desenvolver alternativas de manejo para essa planta daninha. O trabalho foi composto por dois experimentos idênticos, que foram instalados em duas épocas, sendo o primeiro entre junho e setembro de 2013 e o segundo entre outubro de 2013 e janeiro de 2014. As unidades experimentais foram compostas por baldes de plástico com 4 litros de capacidade, preenchidos com solo peneirado e adubado, e dez mudas foram transplantadas para cada balde, sendo mantidas sete plantas por unidade...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E)
Palavras-chave: Planta daninha; Controle; Weed; Herbicide; Control.; Herbicida.
Ano: 2014
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/995528

Efeito do intervalo entre a aplicação de herbicidas e a semeadura, no desenvolvimento, na densidade e na produtividade da soja.
Provedor de dados: 14
Autores: ROMAN, E. S.
bitstream/item/133989/1/ID12166-1989-1990sojaresultados-p76-78.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Soybean; Weed.
Ano: 1990
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/823950

Ervas daninhas do Brasil. Solanaceae I. Gênero Solanum L.
Provedor de dados: 14
Autores: SACCO, J. G.; SANTOS, E.; FROMM-TRINTA, E.; COSTA, N. L. M.; CUNHA, M. C. S.
Tipo: Folhetos
Palavras-chave: Planta daninha; Brasil; Weed; Solanácea; Taxonomia; Solanum; Taxonomy; Brazil.
Ano: 1981
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/901106

Capina química: uma alternativa para manutenção de um pimental.
Provedor de dados: 14
Autores: KATO, O. R.; KATO, M. do S. A.; CARVALHO, R. de A.; ALBUQUERQUE, F. C. de.
bitstream/item/57405/1/Altamira-ComTec11.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Capina química; Pimenta-do-reino; Prática cultura; Weeding; Production; Cultural practices; Weed; Herbicide; Cost.; Custo; Erva Daninha; Herbicida; Piper Nigrum; Produção.; Black pepper.
Ano: 1983
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383430

Recomendacoes tecnicas para o cultivo do arroz: area do Cerrado Zonas 10, 16, 19, 20, 58, 59, 60, 61 e 91.
Provedor de dados: 14
Autores: BRASIL. Ministerio da Agricultura e Reforma Agraria.
O arroz e a regiao; Manejo e conservacao de solos; Recomendacoes de cultivares e qualidade das sementes; Praticas culturais; Colheita; Secagem e armazenamento.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Armazenagem; Planta daninha; Controle; Brasil; Mato Grosso do Sul; Minas Gerais; Goias; Tocantins; Maranhao; Piaui; Distrito Federal; Management; Conservation; Recommendation; Variety; Quality; Seed; Cultural practice; Harvest; Grain; Fertility; Weed; Control; Pest; Disease; Adubação; Arroz; Calagem; Cerrado; Doença; Grão; Npk; Praga; Brazil; Drying; Liming; Rice; Savannas; Soil; Storage.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/445248

Herbicidas, competição e combate as plantas daninhas na cultura do algodão.
Provedor de dados: 14
Autores: BELTRÃO, N. E. de M.
Planta daninha: conceito, tipo e ecologia; Período crítico de competição entre a cultura do algodão e as plantas daninhas; Métodos de combate as plantas daninhas.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Ervas daninha-controle; Brasil; Herbicide; Weed; Control.; Algodão; Gossypium Hirsutum; Herbicida.; Cotton.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/271772

Controle integrado de plantas daninhas em soja.
Provedor de dados: 14
Autores: CERDEIRA, A. L.; ROESSING, A. C.; VOLL, E.
Danos causados pelas plantas daninhas; Principais especies ocorrentes no Parana e no Brasil; Situacao do uso de herbicidas; Meios de controle de plantas daninhas; Como escolher o herbicida; Caracteristicas e usos dos herbicidas; Consideracoes economicas sobre o controle de plantas daninhas; Consideracoes tecnicas sobre algumas alternativas de controle.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Planta daninha; Aspecto economico; Herbicide; Brasil; Parana; Weed; Soybean; Economic aspect.; Controle Biológico; Controle Cultural; Controle Físico; Controle Químico; Herbicida; Soja.; Chemical control.; Brazil; Biological control.
Ano: 1981
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/445281

Competicao entre plantas, especialmente no complexo cultura-planta daninha.
Provedor de dados: 14
Autores: BELTRÃO, N. E. de M.
bitstream/item/33326/1/COMPLEXO.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Herbaceo; Competicao; Annual; Weed; Competition.; Algodão; Erva Daninha; Gossypium Hirsutum.; Cotton.
Ano: 1984
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/262668

Efeito de dose e de mistura de herbicidas no controle de plantas daninhas no controle de plantas daninhas em algodoeiro herbaceo.
Provedor de dados: 14
Autores: VIEIRA, D. J.; NOBREGA, L. B. da; AZEVEDO, D. M. P. de; BELTRAO, N. E. de M.
bitstream/item/59989/1/COMTEC94.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Controle; Brasil; Paraiba; Weed; Herbicide; Control.; Algodão; Erva Daninha; Herbicida.; Gossypium Hirsutum; Sousa; Cotton.
Ano: 1998
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/270904

Controle químico de plantas daninhas em dendezais jovens na região de São Paulo das Pedrinhas, Benevides, Pará.
Provedor de dados: 14
Autores: CONCEIÇÃO, H. E. O. da; FERNANDES, J. R. Q.
bitstream/item/59279/1/CPATU-ComTec70.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Controle; São Paulo das Pedrinhas; Benevides; Pará; Brasil; Oil palm; Weed; Control; Herbicide.; Dendê; Elaeis Guineensis; Erva Daninha; Herbicida.; Amazonia; Imazapyr.
Ano: 1992
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381250

Análises fitossociológicas de plantas daninhas: método aplicado ao ambiente "R".
Provedor de dados: 14
Autores: CONCENCO, G.
bitstream/item/131016/1/DOC-129-2015-completo-anexos.pdf
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Planta daninha; Análise fitossociológica; Automação de script; Phytosociological analysis; Script automation; Weed.
Ano: 2015
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1026317

Recomendações técnicas para a cultura da soja no Parana 1987/88.
Provedor de dados: 14
Autores: OCEPAR. Programa de Pesquisa (Cascavel, PR).
Melhoramento de soja para alimentacao humana; Manejo do solo; Clima; Cultivares; Populacao e densidade de semeadura; Epocas de semeadura; Instalacao da lavoura; Controle de plantas daninhas; Manejo de pragas; Controle de doencas; Colheita.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Recomendacao tecnica; Brasil; Gesso agricola; Cultivar; Planta daninha; Parana; Alimentacao humana; Soybean; Technical recommendation; Cultural practice; Fertilization; Variety; Weed; Pest; Disease; Fungus; Nematode; Harvest.; Adubação Foliar; Adubação; Bactéria; Baculovirus Anticarsia; Calagem; Colheita; Doença; Época de Semeadura; Fungo; Nematóide; Pratica Cultural; Praga; Solo; Soja; Vírus.; Gypsum; Brazil; Liming; Human nutrition; Sowing date.; Soil.
Ano: 1987
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/448322

Recomendações técnicas para a cultura da soja no Paraná 1991/92.
Provedor de dados: 14
Autores: EMBRAPA - Empresa Brasileira de Pesquisa Agropecuária.
A agricultura e Mercosul; Manejo do solo; Rotacao de culturas; Clima; Cultivares; Populacao e densidade de semeadura; Epocas de semeadura; Instalacao da lavoura; Controle de plantas daninhas; Manejo de pragas; Controle de doencas; Colheita; Retencao foliar ("haste verde"); Tecnologia de sementes.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Recomendacao tecnica; Cultivar; Densidade; Epoca; Planta daninha; Controle; Retencao foliar; Brasil; Parana; Soybean; Technical directions; Fertilization; Variety; Weed; Control; Pest; Disease; Fungus; Nematode; Harvest; Seed.; Adubação; Bactéria; Colheita; Doença; Fungo; Manejo; Nematóide; Pratica Cultural; População; Praga; Semeadura; Rotação de Cultura; Semente; Tecnologia; Solo; Vírus.; Soja; Density; Crop rotation; Crop management; Brazil; Population; Plant density; Soil; Sowing date.
Ano: 1991
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/447056

Dinâmica de plantas infestantes em sistemas de cultivo.
Provedor de dados: 14
Autores: CONCENCO, G.; SALTON, J. C.; CECCON, G.
Sistemas integrados de cultivo plantas infestantes; Estudos detalhados de ocorrência de plantas infestantes; Abundância ou densidade; Frequência; Dominância ou cobertura; Índice de Valor de Importância; Coeficiente de Similaridade de Sørensen; Banco de sementes do solo; Estudos em sistemas de cultivo e manejo do solo; Efeito do tempo de uso com pastagem na ocorrência de plantas infestantes; Coberturas de inverno e plantas infestantes em lavoura de soja; Ocorrência de plantas infestantes em sistemas de manejo do solo de 16 anos; Estudo fitossociológico em experimento de longa duração; Estudo do banco de sementes em experimento de longa duração.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Integração lavoura-pecuária; Weed; Culture system.; Erva Daninha; Sistema de Cultivo.
Ano: 2011
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/915136

Recomendacoes tecnicas para a cultura da soja no Parana 1986/87.
Provedor de dados: 14
Autores: OCEPAR. Programa de Pesquisa (Cascavel, PR).
Investimentos em tecnologia: a nova realidade da nova agricultura; Manejo do solo; Clima; Cultivares; Populacao, densidade e epocas de semeadura; Instalacao da lavoura; Controle de plantas daninhas; Manejo de pragas; Controle de doencas; Colheita.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Recomendacao tecnica; Brasil; Cultivar; Parana; Rotacao; Fertilizacao; Planta daninha; Controle; Soybean; Cultural practice; Variety; Foliar fertilization; Disease; Fungus; Nematode; Weed; Harvest; Control; Management.; Adubação Foliar; Bactéria; Colheita; Doença; Época de Semeadura; Fungo; Nematóide; Pratica Cultural; Soja; Vírus.; Solo; Brazil; Crop rotation; Soil; Sowing date.
Ano: 1986
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/448321

Controle bem para colher melhor.
Provedor de dados: 14
Autores: SILVA, J. B. da; SILVA, A. F.
bitstream/item/55172/1/Controle-bem.pdf
Tipo: Artigo de divulgação na mídia (INFOTECA-E)
Palavras-chave: Planta daninha; Controle; Maize; Weed; Control.; Milho; Zea Mays.
Ano: 1987
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/476297

Cultura do gergelim (sesamum indicum L.) no nordeste do Brasil.
Provedor de dados: 14
Autores: BELTRAO, N. E. de M.; FREIRE, E. C.
Informacos gerais; Sistema de cultivo.
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Cultivo; Densidade; Controle; Brasil; Nordeste; Weed; Control; Pest; Harvest.; Colheita; Erva Daninha; Gergelim; Praga; Sesamum Indicum; Solo.; Density; Tillage; Soil.
Ano: 1986
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/262744

A poda do algodoeiro herbáceo para os vales úmidos do sertão nordestino.
Provedor de dados: 14
Autores: AZEVEDO, D. M. P. de; BELTRAO, N. E. de M.; NOBREGA, L. B. da.
bitstream/item/110876/1/COMTEC5.pdf
Tipo: Comunicado Técnico (INFOTECA-E)
Palavras-chave: Herbaceo; Rotacao; Cultura; Controle; Brasil; Nordeste; Paraiba; Annual cotton; Weed; Control.; Algodão; Erva Daninha; Pratica Cultural.; Poda; Pruning.
Ano: 1980
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/262473

Aspectos do controle de ervas daninhas na cultura do algodoeiro no nordeste brasileiro.
Provedor de dados: 14
Autores: BELTRÃO, N. E. de M.
Pesquisas desenvolvidas visando o conhecimento e controle de ervas; Situacao atual dos sistemas de controle de ervas; Pesquisas realizadas e em andamento sobre o controle de ervas; Pesquisas realizadas e em andamento sobre o controle de ervas, desenvolvidas pelo CNP-Algodao; Pesquisas programadas pelo CNP-Algodao.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Controle; Brasil; Nordeste; Weed; Control; Northeast.; Algodão; Erva Daninha; Gossypium Hirsutum.; Brazil; Cotton.
Ano: 1977
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/262413

Controle de Euphorbia heterophylla L. por misturas de herbicidas pós emergentes.
Provedor de dados: 14
Autores: ROMAN, E. S.
bitstream/item/83976/1/CNPT-CIRCULAR-4-CONTROLE-DE-EUPHORBIA-HETEROPHYLLA-L-POR-MISTURAS-DE-HERBICIDAS-POS-EMERGENTES-.pdf
Tipo: Circular Técnica (INFOTECA-E)
Palavras-chave: Herbicide; Planta daninha; Weed.
Ano: 2000
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/850152

Recomendações técnicas para a cultura da soja no Paraná 1988/89.
Provedor de dados: 14
Autores: OCEPAR. Programa de Pesquisa (Cascavel, PR).
Aspectos da comercialização da soja; Manejo do solo; Rotação de culturas; Clima; Cultivares; População e densidade de semeadura; Épocas de semeadura; Instalção da lavoura; Controle de plantas daninhas; Manejo de pragas; Controle de doenças; Colheita; Retenção foliar ("haste verde").
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Recomendação técnica; Planta daninha; Rotação; Cultivar; Brasil; Parana; Soybean; Technical recommendation; Cultural practice; Weed; Variety; Fertilization; Disease; Pest; Nematode; Fungus; Harvest; Seed.; Adubação Foliar; Acidez; Adubação; Bactéria; Calagem; Colheita; Época de Semeadura; Doença; Fungo; Gesso; Manejo; Nematóide; Pratica Cultural; Praga; Semente; Vírus.; Soja; Solo; Acidity; Brazil; Crop rotation; Gypsum; Liming; Soil management; Sowing date.
Ano: 1988
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/448323

Controle de plantas invasoras em pastagens.
Provedor de dados: 14
Autores: DIAS FILHO, M. B.
bitstream/item/34624/1/RecBas-08.pdf
Tipo: Séries anteriores (INFOTECA-E)
Palavras-chave: Planta invasora; Controle; Pasture; Weed; Control; Herbicide.; Herbicida; Pastagem.
Ano: 1988
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381213

Aspectos da competicao entre plantas com especial atencao ao algodoeiro-Gossypium hirsutum L.
Provedor de dados: 14
Autores: BELTRÃO, N. E. de M.
A competicao e suas modalidades; Informes da pesquisa sobre competicao na cultura algodoeira no centro-sul do Brasil e no mundo; Informes da pesquisa sobre competicao na cultura algodoeira no nordeste brasileiro.
Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E)
Palavras-chave: Arboreo; Competicao; Gossypium hirsutum L; Brasil; Nordeste; Weed; Competition; Perennial cotton; Annual cotton.; Algodão Herbáceo; Erva Daninha.
Ano: 1977
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/262412

Cultura do girassol: tecnologia de produção.
Provedor de dados: 14
Autores: CASTRO, C. de; CASTIGLIONI, V. B. R.; BALLA, A.
Escolha da area e preparo do solo; Correcao da acidez; Adubacao; Epoca de plantio; Plantio; Densidade; Controle de plantas daninhas; Doencas e pragas; Colheita.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Preparo; Semeadura direta; Epoca; Densidade; Planta daninha; Brasil; Sunflower; Production; Fertilization; Weed; Disease; Pest; Harvest.; Acidez; Adubação; Colheita; Doença; Girassol; Pesquisa; Praga; Semeadura; Produção; Solo.; Acidity; Density; Brazil; No-tillage; Research; Sowing date.; Soil.
Ano: 1993
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/445278

Resultados de pesquisa de soja - 1990/91.
Provedor de dados: 14
Autores: EMBRAPA. Centro Nacional de Pesquisa de Soja (Londrina, PR).
v.1 - Manejo da cultura; Melhoramento genetico; Sementes; Fertilidade e biologia do solo; v.2 - Manejo do solo; Entomologia; Plantas daninhas; Fitopatologia; Coordenacao do Programa Nacional de Pesquisa de Soja; Difusao de tecnologia; Biometria; Assessoria de imprensa.
Tipo: Documentos (INFOTECA-E)
Palavras-chave: Planta daninha; Fitopatologia; Brasil; Parana; Soybean; Management; Seed; Weed; Phytopathology.; Biologia do Solo; Entomologia; Difusão de Tecnologia; Fertilidade do Solo; Manejo; Melhoramento; Pesquisa; Semente; Soja.; Brazil; Breeding; Entomology; Soil biology; Technology transfer.; Soil fertility.
Ano: 1996
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/449576

Phytophagous arthropods associated with Solanum mauritianum Scopoli (Solanaceae) in the first Plateau of Paraná, Brazil: a cooperative project on biological control of weeds between Brazil and South Africa
Provedor de dados: 82
Autores: Pedrosa-Macedo,José H.; Olckers,Terry; Vitorino,Marcelo D.; Caxambu,Marcelo G.
Solanum mauritianum Scopoli (bugweed), native to southern Brazil, is a major weed in South Africa where it has been targeted for biological control. In 1998, a cooperative project involving Brazilian and South African scientists was initiated to develop cooperative biological control studies involving native Brazilian plants that are invasive in South Africa. Surveys for natural enemies were carried out in the First Plateau of Paraná, where the plant is particularly abundant and where the climatic conditions are similar to high altitude areas in South Africa that are invaded by S. mauritianum. Populations of S. mauritianum supported a diverse herbivore fauna, which included at least 34 insect species and one mite species. Five species with high biological...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weed; Natural enemy; Bugweed.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2003000300026

Weed suppression under the maize-soybean intercropping system
Provedor de dados: 19
Autores: PREMALAL, K. P. S. Bandula; GEMMA, Takuma; MIURA, Hideho; プレマラル, K. P. S. バンドゥラ; 源馬, 琢磨; 三浦, 秀穂.
http://www.obihiro.ac.jp/~library/kenkyu.html
Palavras-chave: Dry matter production; Maize-soybean intercropping; Weed; Yield.
Ano: 1993
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/3760

Seed banks in pastures of Central Amazonian Region
Provedor de dados: 190
Autores: Costa, Joanne Régis; Mitja, Danielle; Leal Filho, Niwton.
This study investigated the seed bank of pastures in disturbed areas in Amazonia Central. In four pastures, 20 samples of 15 x 15 cm at 0 to 5 cm depth and six samples in a depths of 5 to 10 and 10 to 30 cm. For counting and seed identification, the seedling emergence method in a green house was used. Significant differences in seed densities were observed among the four pastures, varying from 304 to 6153 seeds per m², at 0 to 5 cm depth, showing high variation among the areas. The number of species varied from 17 to 27 at the superficial layer. The seed banks contained mainly invasive herbs and pioneer species characteristic of disturbed areas. The succession plant which will develop require a longer time interval to present strata shrubs / trees with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Relative importance; Similarity index; Weed; Richness Recursos Florestais Solo; Estoque de sementes; Regeneração de pastagens; Amazônia.
Ano: 2013
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/431

SENSITIVITY OF MORNINGGLORY PLANTS AND THEIR PROGENIES TO GLUFOSINATE AMMONIUM
Provedor de dados: 87
Autores: BRITO,I.P.F.S.; MORAES,C.P.; MARCHESI,B.B.; CARBONARI,C.A.; VELINI,E.D.
ABSTRACT The sensitivity of weed species to herbicides is variable, and the behavior can be repeated or not in the next generation. The objective of this study was to evaluate the response of morningglory plants to different doses of glufosinate ammonium and the sensitivity of plant populations and their progenies to the herbicide. Three studies were conducted, all in a greenhouse and repeated in two periods. In the first study, two experiments were conducted to examine the dose-response curve, and the treatments were seven different doses of the herbicide glufosinate ammonium (0, 50, 100, 200, 400, 800, and 1,600 g a.i. ha-1), with four replications each. In the second study, which examined the range in sensitivity of morningglory to glufosinate ammonium,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonia; Glutamine synthetase; Ipomoea grandifolia; Weed.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100211

Resistance of Raphanus raphanistrum to the herbicide metsulfuron-methyl
Provedor de dados: 87
Autores: Costa,L.O.; Rizzardi,M.A.
The ALS-inhibiting herbicides, especially metsulfuron-methyl, are widely used for weed control, mainly wheat and barley in southern Brazil. Raphanus raphanistrum is a major weed of winter crops. However, in recent years, R.raphanistrum, after being treated with metsulfuron, has shown no symptoms of toxicity, possibly due to herbicide resistance. Aiming to evaluate the existence of R.raphanistrum biotypes resistant to metsulfuron, an experiment was conducted in a greenhouse, in a completely randomized design with four replications. The plots consisted of pots with six plants. The treatments consisted of the interaction of resistant R. raphanistrum (biotype R) and susceptible R. raphanistrum (biotypes S) with ten doses of the herbicide (0.0; 0.6; 1.2; 2.4;...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Acetolactate synthase; Dose-response; Weed; Resistance factor.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000100020

Response of Three Chloris elata Populations to Herbicides Sprayed in Pre- and Post-Emergence
Provedor de dados: 87
Autores: CORREIA,N.M.; RESENDE,Í.
ABSTRACT: In agricultural areas of Brazil, where there is no establishment of cover crops in the off-season and in fruit orchards, an increase in Chloris elata infestations, syn. Chloris polydactyla, has been observed. With the purpose to evaluate the response of three populations (Itaberaí - GO, Matão - SP e Jaboticabal - SP) of C. elata to herbicides sprayed before and after emergence, four experiments were conducted. In the first one, the differential tolerance of three C. elata populations to the herbicide glyphosate (0, 0.18, 0.36, 0.72, 0.96, 1.44, 2.88, 5.76 and 11.52 kg a.e. ha-1) was studied. In the other experiments, the control of the three populations by herbicides applied in pre-emergence (clomazone, diclosulam, flumioxazin, isoxaflutole,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biotype; Tall windmill grass; Chemical control; Weed.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100277

Morpho-Architectural Traits that Allow the Regeneration of Eustachys retusa (poaceae) in Systems with Intensive Glyphosate Application
Provedor de dados: 87
Autores: PANIGO,E.S.; ALESSO,C.A.; DELLAFERRERA,I.M.; OLIVELLA,J.; PERRETA,M.G.
ABSTRACT Eustachys retusa has low sensitivity to glyphosate at the reproductive stage. The purpose of this study was to analyze the effect of glyphosate on adult E. retusa plants in order to identify the traits that make possible their regeneration in no-tillage systems. For this purpose, reproductive-stage specimens from wild populations were treated with glyphosate at two different rates (480 and 1,200 g a.i. ha-1) including a non-treated control. Results demonstrated that glyphosate could control E. retusa plants at reproductive stage at 1,200 g a.i. ha-1 dose. However, a certain proportion of plants can survive despite having full chlorosis as a consequence of basal bud activation (bud bank) and the presence of reserves in the rhizome. These...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Argentine fingergrass; Herbicide; Weed; Tolerance; Morphological changes.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000400709

Growth and mineral nutrition of Solanum americanum
Provedor de dados: 87
Autores: Bianco,S.; Carvalho,L.B.; Bianco,M.S.
A greenhouse trial was carried out from November 1995 to April 1996 at FCAV/UNESP, Brazil, aiming to study the dry matter production and the accumulation and distribution of macronutrients in Solanum americanum, an important weed for annual and perennial crops in Brazil. The plants were grown in seven liter pots with sand substrate, irrigated daily with Hoagland &amp;amp; Arnon nutrient solution. The experimental design was completely randomized with four replicates. The treatments corresponded to evaluation times at 14 day intervals, beginning 21 days after emergence (DAE). In each evaluation, the plants of four pots were analyzed for dry matter production and macronutrient content. S. americanum had a small dry matter and macronutrient accumulation at...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weed; American black nightshade; Dry matter; Macronutrients.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582010000200008

Chemical control of Pileamicrophylla in cattleya seedlings (Cattleyatenebrosa x Cattleyaleopoldy)
Provedor de dados: 87
Autores: Battistus,A.G.; Klein,J.; Costa,N.V.; Guimarães,V.F.; Hoffmann,V.
Species of the orchidaceae family are grown for marketing flowers and among them the genus Cattleya stands out. However, due to its slow growth, the substrate is subjected to weed infestation. Therefore, this study aims to evaluate the selectivity and efficiency of herbicides in controlling Pilea microphylla in Cattleya orchid seedlings (Cattleya tenebrosa x Cattleya leopoldy). We used a completely randomized design with four replications. The evaluated herbicides were oxyfluorfen (0, 120, 240 and 480 g ha-1), flumioxazin (0, 12.5, 25 and 40 g ha-1), nicosulfuron (0, 20, 40 and 80 g ha-1) mesotrione (0, 96, 144 and 192 g ha-1), clethodim (0, 60, 84 and 108 g ha-1) and metsulfuron-methyl (0, 1.2, 1.8 and 2.4 g ha-1). At post-emergence applying time, the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weed; Herbicide; Floriculture; Selectivity.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000400015

Urochloa brizantha Interference in the Phaseolus vulgaris Radicular System Fertilized with Phosphorus
Provedor de dados: 87
Autores: FREITAS,A.F.; MACIEL,J.C.; SILVA,M.M.; SANTOS,J.B.
ABSTRACT: Interference between root systems occurs below the ground surface long before the competition between plants is expressed in the shoot. Nutrients stand out for being limited in the soil, requiring supplementation, especially phosphorus. Thus, this study aimed at estimating, from sowing, visual characteristics in the root systems of bean plants from the Carioca variety (Phaseolus vulgaris) when in competition with brachiaria (Urochloa brizantha), considering also the application of phosphorus P2O5. A factorial design with six treatments was used resulting from the combination of three cultivation schemes (beans in isolated crops or in competition with one or two brachiaria plants), and the application or not of phosphate fertilizer (90 kg ha-1 of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Competition; Rhizotron; Weed.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100252

Germination of Stigmaphyllon blanchetii Seeds in Different Temperatures and Luminosity
Provedor de dados: 87
Autores: SILVA,E.M.; PEREIRA,J.C.; FERREIRA,V.M.; SOUZA,R.C.
ABSTRACT: The objective of the present work was to study the influence of temperature and light on germination of seeds of Stigmaphyllon blanchetii, popularly known as rat tail. The first stage of the research evaluated the effect of three constant temperatures (20 oC, 25 oC and 30 oC) and an alternating temperature (20-30 oC). In the second stage, for simulation of different types of light, four conditions of luminosity (white, red, far red and absence of light) were used. The temperatures that provided the best germination and development for S. blanchetii are the constant (30 oC) and the alternating (20-30 oC) ones. The seeds germinated both in the presence and absence of light, but there was greater germination and seedling development in the absence...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weed; Stigmaphyllon blanchetii; Photoblastism; Phytochrome.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100184

Management Of Commelina benghalensis with Saflufenacil in Shaded Environments
Provedor de dados: 87
Autores: SANTOS JUNIOR,A.; FREITAS,F.C.L.; SANTOS,I.T.; SILVA,D.C.; PAIXÃO,G.P.; SEDIYAMA,C.S.
ABSTRACT: The repetitive use of glyphosate in the control of weeds in eucalyptus plantations has selected tolerant species such as Commelina benghalensis. Therefore, the use of herbicides of other mechanisms of action, such as saflufenacil, in rotation or combination with glyphosate, is necessary to reduce damages caused by C. benghalensis, whose sensitivity to herbicides can be influenced by the shading caused by the eucalyptus crop. This study aimed to assess the efficiency of saflufenacil in the management of C. benghalensis at different shading levels. Three experiments were carried out regarding a certain shading level (cultivation environment with 0, 40, and 55% shade). The experimental design was a randomized block design with five herbicide doses...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Shading; Chemical control; Biomass allocation; Weed; Benghal dayflower.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100249

Commelina Species Control with Desiccants Alone and in Mixtures
Provedor de dados: 87
Autores: FERREIRA,S.D.; SALVALAGGIO,A.C.; MORATELLI,G.; VASCONCELOS,E.D.; COSTA,N.V.
ABSTRACT: The objective of this study was to evaluate the chemical control of the species C. benghalensis and C. erecta with desiccants alone and mixtures, as well as the spreading of spray droplets on the leaf surfaces. The experimental design was completely randomized in a 2 x 16 factorial arrangement with four replications, totaling 32 treatments and 128 plots. The first factor is related to the species C. benghalensis and C. erecta and the second factor corresponds to the treatments carfentrazone-ethyl in doses of 15, 30, 60 g ha-1, which added 0.5% v v-1 adhesive spreader; glufosinate ammonium at doses of 100, 200, 400 g ha-1, added 0.5% v v-1 mineral oil; glyphosate at 240, 480, 960 g ha-1; carfentrazone-ethyl + glufosinate ammonium in doses of 100,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weed; Droplets surface tension; Spreader and sticker agent; Chemical control; Synergism.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100278

Resistance to Glyphosate in Populations of Digitaria insularis
Provedor de dados: 87
Autores: COSTA,N.V.; MORATELLI,G.; FERREIRA,S.D.; SALVALAGGIO,A.C.; RODRIGUES-COSTA,A.C.P.
ABSTRACT: The intensive use of glyphosate can select resistant populations. This study aimed at evaluating the occurrence of glyphosate resistance in populations of D. insularis in agricultural areas. Three experiments were conducted in randomized block experimental design with four replications. The Resistance Degree (RD) was determined by a dose-response curve in the evaluated populations: Experiment 2012, São Camilo (R01 and R02) and Palotina (R03, R04 and S05-susceptible); Experiment 2013 Palotina (R06 and R12), Katueté/Paraguay (R07), Toledo (R08 and R10), Cascavel (R09), São Miguel do Iguaçu (R11), Dom Eliseu/Pará (S13-susceptible); Experiment 2015 Nova Aurora (R14), Iracema do Oeste (R15 and R16), Jesuitas (R17 and R18), Tupãssi (R19), Jotaesse...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Sourgrass; Agricultural practices; Weed; Herbicide.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100330

Nitrogen dynamic in wheat (Triticum aestivum L.) agroecosystem as influenced by intra- and interspecific competition
Provedor de dados: 87
Autores: Asadi,Sara; Aynehband,Amir; Rahnama,Afrasyab.
Abstract  Background:  The study of both intra- and interspecific competitions in Wheat (Triticum aestivum L.) agroecosystem is quite complex and it is essential to understand the influence of nitrogen in these competitions.  Objective:  The aim of this study was to evaluate the effect of different competitive models on nitrogen balance in wheat ecosystem agriculture (Chamran cultivar).  Methods:  A field experiment was performed using split-plot based on randomized complete block design (RCBD) with three replications. The main and sub-plots consisted of different nitrogen rates (control, 50, 100 and 150 kg nitrogen ha-1) and different competitive patterns (no, intraspecific, interspecific competition and intra- and interspecific in combination) were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nitrogen balance; Nitrogen content; NTE; Remobilization; Weed.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100332

Resistence of Radish Biotypes to Iodosulfuron and Alternative Control
Provedor de dados: 87
Autores: CECHIN,J.; VARGAS,L.; AGOSTINETTO,D.; ZIMMER,V.; PERTILE,M.; GARCIA,J.R.
The repetitive use of iodosulfuron for the control of weeds in winter cereals in the south of Brazil has favored the emergence of resistant Raphanus sativus biotypes. The objective of this study was to evaluate: the response of Raphanus sativus biotypes susceptible and resistant to different dosages of iodosulfuron; the control of biotypes with alternative registered herbicides for the control of the species in crops of wheat, corn and soybean; and the existence of cross-resistance of the biotypes. Thus, four experiments were done in a greenhouse, with a completely randomized design and four replicates. The experimental units were composed of vases with a volumetric capacity of 0.75 L filled with substrate, containing a plant each. For the dose-response...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Raphanus sativus; Dose-response; Acetolactate synthase; Weed.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000100151

Directed-spray application of paraquat and diuron in physic nut plants
Provedor de dados: 87
Autores: Costa,N.V.; Neunfeld,T.H.; Ohland,T.; Piano,J.T.; Klein,J.
There is little information about the selectivity of herbicides in physic nut (Jatropha curcas) in Brazil. Therefore, this study aimed to evaluate the selectivity of different doses and mixtures of paraquat and diuron in direted-spray applications in physic nut plants in greenhouse conditions. The study used a randomized block design, with five replicates. The treatments were: paraquat (200 and 600 g ha-1), diuron (1,000 and 2,000 g ha-1), paraquat + diuron (200 + 1,000 g ha-1), paraquat + diuron (200 + 2,000 g ha-1), paraquat + diuron (600 + 1,000 g ha-1), paraquat + diuron (600 + 2,000 g ha-1) and a control (no application). Directed-spray application was performed at 70 days after sowing by the lower third of the plants. The treatments of diuron and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Jatropha curcas; Weed; Chemical control; Gas exchange.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000400025

Adaptive value of ryegrass biotypes with low-level resistance and susceptible to the herbicide fluazifop and competitive ability with the wheat culture
Provedor de dados: 87
Autores: Fraga,D.S.; Agostinetto,D.; Vargas,L.; Nohatto,M.A.; Thürmer,L.; Holz,M.T.
Ryegrass is the main weed in wheat crop, causing yield loss due to competition by environmental resources. The objectives of this study were to estimate the fitness cost of ryegrass biotypes with low-level resistance and susceptible to fluazifop and to investigate the relative competitive ability of these biotypes between themselves and against the crop. Thus, fitness cost and competitive ability experiments were conducted under greenhouse conditions. For the fitness cost experiments, the low-level resistant ryegrass biotypes and those susceptible to fluazifop were used. For competitive ability, the treatments were arranged in a replacement series, with five proportions of the wheat cultivar FUNDACEP Horizonte and the low-level resistant and susceptible...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weed; Competition; Lolium multiflorum.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000400014

Selectivity of clomazone and S-metolachlor applied after cassava pruning
Provedor de dados: 87
Autores: Costa,N.V.; Andrade,D.C.; Sontag,D.A.; Scariot,C.A.; Tsuzuki,L.H.
The objective of this work was to evaluate the selectivity of clomazone in two formulations and S-metolachlor applied on shoots of different sizes after pruning of 'Baianinha' cassava. The experiment was arranged in a randomized block design in a factorial 5 x 2 (5 treatments x 2 sizes of shoots after pruning - 10 and 33 cm) with four replications. The herbicides evaluated were: clomazone (encapsulated suspension - 900 g h-1), clomazone (encapsulated suspension - 1,080 g ha-1), clomazone (emulsifiable concentrate 900 g ha-1), S-metolachlor (1,920 g ha-1) and an untreated control. During the experiment, all plots were kept free of weed interference by hand weeding. It was concluded that both the formulations of clomazone and S-metolachlor were selective...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Manihot esculenta; Microencapsulated; Weed; Clomazone; S-metolachlor.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000400024

Interference of Noxious Shrubs on Grazing Behavior by Bovines
Provedor de dados: 87
Autores: MARCHI,S.R.; SILVA,H.M.; FERREIRA,C.F.; MARQUES,R.F.; MORAES,J.B.
ABSTRACT: The grazing behavior practice by bovines can be positive or negatively influenced by the pasture structure where the animal is inserted. Several factors determine the pasture structure and the presence of weeds is considered one of the most important. This study aimed to assess the effect of species with and without stiff structures over the grazing behavior of bovines in pasture areas. The experimental design was a split block design with four replications, in which treatments were arranged in a 4 x 3 factorial design: four weed species (Zanthoxylum rhoifolium, Cnidoscolus urens, Dasyphyllum brasiliensis, and Luehea divaricata) associated with three proximity strips of weeds: 0-50, 50-100, and 100-150 cm in relation to the main stem of the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Thorny shrub; Nettle; Pastures utilization; Animal access; Weed.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100208

Protective Effect on Eucalyptus Plants and Signal Grass Control with a Tank Mixture of Glyphosate and Liquid fertilizer
Provedor de dados: 87
Autores: MACHADO,M.S.; FERREIRA,L.R.; PEREIRA,G.A.M.; GONÇALVES,V.A.; PAIXÃO,G.P.
ABSTRACT: What is expected from an effective antidote, applied with an herbicide, is that it protects crops from damages by the herbicide without reducing its action on weeds. In this context, the goal of this study was to evaluate the effect of liquid fertilizer as a protector of eucalyptus plants and to control signal grass (Urochloa brizantha) submitted the application of glyphosate when applied in tank mixture. Plants were submitted to doses of liquid fertilizer and glyphosate; the application was performed so that the syrup would reach all aerial parts of the plants. The intoxication percentage of eucalyptus plants was evaluated on day 14, 35 and 49 after application (DAA). On day 49 DAA, the morphologic parameters of eucalyptus plants and the dry...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Application technology; Antidotes; Eucalyptus urophylla; Urochloa brizantha; Weed.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100273

Competitive ability of corn in coexistence with goosegrass
Provedor de dados: 87
Autores: Wandscheer,A.C.D.; Rizzardi,M.A.; Reichert,M.
Competition between plants is one of the main interferences that occurs in agricultural systems and accounts for significant crop yield reductions. The aim of this study was to assess the competitive ability of corn in coexistence with the weed species Eleusine indica. The experiments were conducted in a greenhouse, in the growing season 2010/2011, and were arranged in a completely randomized design with four replications. The experimental units consisted of plastic pots with a volumetric capacity of 8 L. Treatments were arranged in a replacement series with five proportions of corn plants and weed: 100:0, 75:25, 50:50, 25:75, and 0:100, respectively, with a constant population of eight plants per pot, at the end of each treatment. The competitiveness...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Competition; Weed; Eleusine indica; Zea mays.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000200005

Herbicides for Rooted Aquatic Macrophytes
Provedor de dados: 87
Autores: CERVEIRA JR.,W.R.; SILVA,A.F.; CRUZ,C.; PITELLI,R.A.; MARTINS,D.
ABSTRACT: The aim of this study was to evaluate the effectiveness of glyphosate, 2,4-D, and diquat to control the aquatic macrophytes Brachiaria subquadripara, Hedychium coronarium, and Myriophyllum aquaticum under greenhouse conditions. The following herbicides and doses were used: glyphosate at 240, 720, 1,680, 2,640, 3,600, and 4,320 g a.e. ha-1, 2,4-D at 335, 1,005, 1,675, 2,345, and 3,015 g a.e. ha-1, diquat at 100, 200, 300, 400, 500, and 600 g a.i. ha-1, and a control with 10 replications. Sprayings were applied with a CO2-pressurized backpack sprayer at a constant pressure of 172.36 KPa, tips DG 11002, and spray solution consumption of 200 L ha-1. The effectiveness of control was evaluated visually at 3, 7, 15, 21, 30, 45, and 60 days after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chemical management; Aquatic plant; Weed; Aquatic environment.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100278

Resistance detection of blackjack to ALS inhibitors by in vitro plant growth method
Provedor de dados: 87
Autores: Tessaro,Daniela; Benneman,Daiane; T. Perboni,Lais; R. Garcia,Jéssica; M. Teixeira,Marlon; Agostinetto,Dirceu.
Abstract  Background: The resistance of weeds to herbicides is a problem that has been increasingly studied because of its great importance in agriculture and rapid growth of this phenomenon worldwide. The quick detection of resistant plants is extremely important for resistance management. Weed resistance to herbicides can be detected through field, greenhouse and laboratory tests. A fast way of detecting resistance is using tissue culture method, where is possible to use resistant plant clones and obtain results faster than whole-plant method in greenhouse.  Objective:  The aims of the research were to detect the resistance of blackjack to herbicides inhibitors of the acetolactate synthase (ALS), addition in vitro cultivation; determine the herbicide...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bidens Pilosa; Resistance test; Acetolactate synthase; Weed.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100315

Effects of early compost application on no-till organic soybean
Provedor de dados: 87
Autores: Penha,L.A.O.; Khatounian,C.A.; Fonseca,I.C.B.
Weed control has always been an important issue in agriculture. With the advent of no-till systems, soil erosion was reduced but herbicide use was increased. Organic no-till systems try to adjust reduced erosion to the no use of herbicides. Nevertheless, this adjustment is limited by the cost of mechanical weed control. This cost may be reduced by improved cultural weed control with cover crops mulches. In this paper we report a study on the application of compost manure on an oats winter cover crop, preceding soybean, instead of on the soybean summer crop. Treatments comprised a control without compost manure, and compost manure doses of 4 and 8 Mg ha-1 applied either on oats in winter or soybean in summer, organized in a randomized block design, with...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Euphorbia heterophylla; Oats; Avena spp.; Weed; Cover crop; Manure.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582012000100001

Management Programs to Control Conyza spp. in Pre-Soybean Sowing Applications
Provedor de dados: 87
Autores: ZOBIOLE,L.H.S.; KRENCHINSKI,F.H.; PEREIRA,G.R.; RAMPAZZO,P.E.; RUBIN,R.S.; LUCIO,F.R.
ABSTRACT: The goal of this study was to compare the efficacy of different weed management through a burndown application followed by sequential applications of herbicides to control Conyza spp. Thus, four field experiments were conducted, two in the western region of Paraná state (E1 and E2), one in Jataí, Goiás state (E3) and another one in Ibirubá, Rio Grande do Sul state (E4). Conyza spp. in this area had a height ranging between 25 and 60 cm. Treatments were arranged in a randomized block design with four replications. The primary herbicide treatments were 2,4-D + glyphosate + diclosulam, chlorimuron-ethyl + glyphosate + 2,4-D, and four doses of diclosulam + halauxifen-methyl + glyphosate. These treatments were applied singly or in sequential...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Horseweed control; Herbicide; Sequential application; Weed.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100275

MANAGEMENT OF PARTHENIUM WEED USING METABOLITES OF Alternaria japonica
Provedor de dados: 87
Autores: JAVAID,A.; MUBEEN,T; BASHIR,U; SHOAIB,A.
ABSTRACT Parthenium (Parthenium hysterophorus) is an alien invasive weed infesting many parts of the world including Pakistan. A number of herbicides have been recommended for control of this weed, but these herbicides have issues regarding human health and environmental safety. In the current study, the herbicidal potential of culture filtrates of a fungal species, namely Alternaria japonica, was evaluated against parthenium weed. The fungal species was grown in malt extract broth (MEB) and potato dextrose broth (PDB) for 15 days. Culture filtrates were obtained by passing the materials through muslin cloth followed by filtration through filter paper and then through Millipore filter paper. In laboratory bioassays, the effect of original (X) and diluted...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Asteraceae; Congo grass; Fungi; Mycoherbicide; Weed.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582017000100214

Screening of resistance to egyptian broomrape infection in tomato varieties
Provedor de dados: 87
Autores: Tokasi,S.; Bannayan Aval,M.; Mashhadi,H.R.; Ghanbari,Ali.
Parasitic weed species of the genus Orobanche are serious threat for the production of several crops in Europe, Africa and Asia. Research on resistant host plant varieties is one of the most effective management strategies for this parasitic weed. In this study, the susceptibility of twenty-nine tomato varieties to broomrape infection (Orobanche aegyptiaca) under greenhouse conditions was investigated. The employed experimental design was completely randomized with three replications. Differences in susceptibility to infection were monitored among tomato varieties based on their difference in the number of emerged shoots of broomrape and broomrape dry weight (shoots and tubercles). Date of Orobanche emergence varied over a period of 3 to 30 days between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breeding; Orobanche aegyptiaca; Lycopersicon esculentum; Parasitic plant; Weed.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000100012

Effects of irrigated rice sowing season and imazapyr + imazapic time of application on rice grain yield and red rice management
Provedor de dados: 87
Autores: Sartori,G.M.S.; Marchesan,E.; Azevedo,C.F.; Filho,A.C.; Roso,R.; Coelho,L.L.; Oliveira,M.L.
Irrigated rice sowing season and red rice competition are among the main factors affecting grain yield. The objective of this work was to evaluate the sowing date of irrigated rice and moments of application of the herbicide imazapyr + imazapic to control red rice management and irrigated rice grain yield. Eight experiments were performed at the following dates (09/30, 10/19, 11/08 and 12/01) for the 2010/2011 harvest season and (09/27, 10/17, 11/08 and 12/05) for the 2011/2012 harvest season. The treatments were: application of the herbicide imazapyr + imazapic at doses of 105+35 g ha-1 in pre-emergence (PRE); 52.5+17.5 g ha‑1 in pre-emergence and 52.5+17.5 g ha-1 in post-emergence (PRE + POST); and 105+35 g ha-1 in post- emergence (POST), and a control...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weed; Herbicide; Chemical control; Temperature; Solar radiation; Oryza sativa.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000300015

Demographic and Phenological Studies on David’s Spurge (Euphorbia davidii) in the Central Area of Buenos Aires Province, Argentina
Provedor de dados: 87
Autores: NÚÑEZ FRÉ,F.R.; JUAN,V.F.; SAINT ANDRÉ,H.M.; CHANTRE,G.R.
ABSTRACT: David’s Spurge is an spring-summer annual weed, present in the central area of Buenos Aires Province, Argentina. Field studies were carried out during 2011/12 and 2013/14 to assess demography and population dynamics and determine a thermal time scale of this species. At the experimental site, 1 m² quadrants were established as observational plots, four per cohort. The number of individuals at each phenological stage and from each cohort was recorded weekly. At the end of the experiment, all plots were harvested, and seed production was determined. A thermal time scale was established to identify the occurrence of the different phenological events. Three cohorts were detected, the first one emerged in mid-October, the second one in early November,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cohort; EUDA5; Life table; Weed; Thermal time; Euphorbiaceae.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100288

Emergence of Razor Grass on the Basis of Origin and Seed Depth in the Soil Profile
Provedor de dados: 87
Autores: MARQUES,A.S.; MARCHI,S.R.; PINHEIRO,G.H.R.; MARQUES,R.F.; MARTINS,C.C.
ABSTRACT: Razor grass (Paspalum virgatum L) is one weed that has gain importance because of its high seed production capability, mainly when pasture fields need to be renewed. Understanding seedling emergence behavior is crucial to devise strategies to manage this weed. This trial was carried out to evaluate the emergence pattern of razor grass seedlings on the basis of seed depth in the soil profile. The experiment was conducted in a green-house in a completely randomized design, with six replications. The treatments performed in a 11 x 3 factorial arrangement: eleven seeding depths (surface, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0 and 10.0 cm) by three ecotypes (Rondonópolis, Redenção and Cacoal, Brazil). The effect of origin and seed depth was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Paspalum virgatum; Ecotype; Weed; Pasture; Emergence pattern.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100178

Leaf Consumption and Preference to Conyza sp., Conventional and Bt Soybean by Helicoverpa armigera
Provedor de dados: 87
Autores: CUTTI,L.; MURARO,D.S.; SILVA,V.A.; KASPARY,T.E.; BASSO,C.J.; ROGGIA,S.
ABSTRACT: Helicoverpa armigera caterpillars are polyphagous and exhibit high migratory potential. Given the traits of this pest, alternative hosts located in or near the crop stand may support the survival and permanence of H. armigera in the field. The aim of this study was to investigate Conyza sp. as a food source for H. armigera caterpillars in scenarios with conventional and Bt soybean. Two experiments were conducted in biochemical oxygen demand incubators. The first assessed consumption of conventional soybean, Bt soybean and Conyza sp. leaves by 3rd and 5th instar caterpillars, with no choice given (no-choice test). The second test evaluated the food preference of 3rd instar H. armigera larvae, with two choices given (dual-choice test). Fifth instar...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weed; Glycine max; Alternative host.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100181

Straw interference in the emergence of talquezal seeds from different origins
Provedor de dados: 87
Autores: Marchi,Sidnei R.; F. Marques,Ricardo; M. Souza,Rodrigo; F. Justo,Cristina; C. Martins,Cibele.
Abstract  Background: Talquezal (Paspalum virgatum L.) has become one of the main pasture weeds due to its association with the Urochloa brizantha death syndrome, a disease that causes the progressive death of clumps of susceptible grasses in patches, which leads to weed colonization and pasture degradation. Understanding the weed emergence pattern is essential in decision making for management strategies.  Objective: Thus, this study aimed to evaluate the emergence pattern of talquezal seedlings according to its origin and the amount of straw covering the soil.  Methods: The experiment was carried out in a greenhouse in a completely randomized design, with six replications and treatments arranged in an 8 × 3 factorial scheme with eight amounts of Urochloa...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Paspalum virgatum L.; Razor grass; Seedling; Germination; Weed.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100309

Phytosociology in Degraded and Renewed Pastures in Agrosilvopastoral Systems
Provedor de dados: 87
Autores: DIAS,R.C.; SANTOS,M.V.; FERREIRA,E.A.; BRAZ,T.G.S; FIGUEIREDO,L.V.; CRUZ,P.J.R.; SILVA,L.D.
ABSTRACT: In pastures, the incidence of weeds reduces the productivity and quality of forage. The identification of the weed species in pastures is fundamental to choose the renewal method. Thus, the objective of this work was to perform phytosociology before and after the renewal of a Brachiaria decumbens pasture, with the implantation of agrosilvopastoral systems. Eighteen different crop arrangements for pasture renewal were evaluated. The renewal systems were by eucalyptus integration (at 12 x 2 m or 12 x 3 m spacings) with maize, Brachiaria brizantha cv. Marandu (palisade grass) and/or Macrotyloma axillare (perennial horsegram), or monoculture and intercropping of palisade grass and perennial horsegram, as well as the evaluation of the application or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Intercropping; Crop-livestock-forest; Weed; Pasture management.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100274

Phytochemical Profile of Pasture Weeds from the Brazilian Cerrado
Provedor de dados: 87
Autores: RODRIGUES,D.A.; PEREIRA,G.A.M.; SILVA,A.A.; SANTOS,M.H.; DEMUNER,A.J.; OLIVEIRA,P.M.
ABSTRACT: The great diversity of plant species in pastures of the Brazilian Cerrado with distinct ecophysiological characteristics indicates the possibility of finding, in the cellular content of this flora, chemical compounds with potential for use in agriculture and human and animal health. Three steps are necessary to prove this hypothesis: phytochemical prospecting, characterization of secondary metabolites, and studies on the biological activities of these metabolites present in these plants. The chemical profile of secondary metabolites present in five species of the Brazilian Cerrado (Davilla elliptica, Remijia ferruginea, Luehea paniculata, Anacardium occidentale, and Acosmium dasycarpum) was traced in this research. These plant species were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Secondary metabolites; Davilla elliptica; Remijia ferruginea; Luehea paniculata; Anacardium occidentale; Acosmium dasycarpum; Weed; Allelopathy.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100227

Efficacy of herbicides applied to Digitaria horizontalis plants under different water conditions
Provedor de dados: 87
Autores: Pereira,M.R.R.; Martins,D.; Souza,G.S.F.; Rodrigues-Costa,A.C.P.; Klar,A.E.
This project aimed to relate the control efficiency of ACCase inhibiting herbicides applied post-emergence to Digitaria horizontalis plants under different soil water contents. The experiments were conducted in a greenhouse, with the application of three different herbicides (fluazifop-p-butyl, haloxyfop-methyl, and sethoxydim + mineral oil Assist). The experimental design used for each herbicide was completely randomized, with four replications, consisting of a 3 x 4 factorial, with the combination of water management strategies (-0.03, -0.07 and -1.5 MPa) and four doses of these products (100%, 50%, 25%, and 0% of the recommended dose). Herbicide application was made at two vegetative stages, 4-6 leaves and 2-3 tillers. The visual phytotoxicity...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Crabgrass; Chemical control; Water restriction; Weed.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582012000100019

Biological Cycle of Susceptible and Glyphosate-Resistant Sourgrass Biotypes in Two Growth Periods
Provedor de dados: 87
Autores: FERREIRA,S.D.; EXTECKOETTER,V.; GIBBERT,A.M.; BARBOSA,J.A.; COSTA,N.V.
ABSTRACT: Selecting glyphosate-resistant Digitaria insularis may cause changes in the biological cycle of the species. Therefore, the objective of this study was to evaluate the biological cycle of susceptible and glyphosate-resistant D. insularis biotypes in two growth periods (summer/autumn and autumn/winter). Seeds were collected in the municipality of Alagoa Grande (07o02’59" S 35o37’01,5" W), and were considered susceptible (S1), in Cascavel (24o55’27" S 53o27’54.6 ”W) considered as resistant 1 (R1), Entre Rios do Oeste (24o40’44" S 54o17’05" W) considered as resistant 2 (R2) and Marechal Cândido Rondon (24o42’30" S 54o21’10" W) considered as resistant 3 (R3). Evaluations were carried out in the summer/autumn and autumn/winter periods. The collection...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Digitaria insularis; Growth analysis; Weed; Chemical control.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100276

Initial growth and development of southern sandbur based on thermal units
Provedor de dados: 87
Autores: Machado,E.C.R.; Lima,R.S.O.; Silva,A.P.P.; Marques,B.S.; Gonçalves,M.F.; Carvalho,S.J.P.
Availability of basic information on weed biology is an essential tool for designing integrated management programs for agricultural systems. Thus, this study was carried out in order to calculate the base temperature (Tb) of southern sandbur (Cenchrus echinatus), as well as fit the initial growth and development of the species to accumulated thermal units (growing degree days - GDD). For that purpose, experimental populations were sown six times in summer/autumn conditions (decreasing photoperiod) and six times in winter/spring condition (increasing photoperiod). Southern sandbur phenological evaluations were carried out, on alternate days, and total dry matter was measured when plants reached the flowering stage. All the growth and development fits were...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cenchrus echinatus; Weed; Biology; Growing degree days; Modeling.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000200011

SULFENTRAZONE SELECTIVITY AND EFFICIENCY IN CASSAVA CROPS IN SANDY AND CLAYEY SOILS
Provedor de dados: 87
Autores: COSTA,N.V.; FERREIRA,S.D.; RAMELLA,J.R.; MORATELLI,G.; DOURADO,R.F.
ABSTRACT Weeds have the potential to dramatically interfere in cassava cultivation, reducing its productive potential; however, there are few studies on the selective herbicides in this crop. Therefore, the objective was to evaluate in this work the selectivity and efficiency of sulfentrazone in cassava crops grown in sandy and clayey soils. Two experiments were carried out: The first one was carried out in sandy soil conditions in the conventional system; and the second one was carried out in clayey soil conditions in the no-tillage system. The experimental design was a randomized block with four replications. The treatments consisted in doses of 250, 500, 750 and 1,000 g ha-1 of sulfentrazone, and weeded and non-weeded controls. Sulfentrazone application...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chemical control; Protox inhibitors; Weed; Manihot esculenta.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000400787

Effect of Glyphosate on Guineagrass Submitted to Different Soil Water Potential
Provedor de dados: 87
Autores: SILVA JR.,A.C.; GONÇALVES,C.G.; SCARANO,M.C.; PEREIRA,M.R.R.; MARTINS,D.
ABSTRACT: The action of herbicides on weeds that develop under water deficit can be compromised, because the routes of penetration of hydrophilic herbicides are reduced due to the lower hydration of the cuticle in these plants. Moreover, hydrophobic compounds found in the epicuticular wax coating of plants under water stress, hinder the penetration of hydrophilic compounds. This study evaluated the control efficiency of glyphosate on guineagrass plants when submitted to different water deficits. The study was conducted in a greenhouse, and treatments were composed of guineagrass plants submitted to three soil water conditions [low water deficit (13%), intermediate water deficit (10%) and high water restriction (8%)], three doses of glyphosate (0.0, 270.0...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Herbicide; Water deficit; Weed; Panicum maximum.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100320

Analysis of Genotypic Variability in Avena spp. Regarding Allelopathic Potentiality
Provedor de dados: 87
Autores: CARRARO-LEMES,C.F.; SCHEFFER-BASSO,S.M.; DEUNER,C.C.; BERGHAHN,S.C.T.
ABSTRACT: The recognized allelopathic activity of oats as a soil-cover plant induces the study of the potential of their germplasm. The objective of this study is to verify if there is genotype variability in the Avena spp. with regard to allelopathic activity. Extracts of A. strigosa ‘Agro Quaraí’, ‘Agro Esteio’, ‘Embrapa139’, ‘AF 12104’, ‘AF 12109’, ‘AF 12202’, ‘AF 12209’, A. sativa ‘UPFPS Farroupilha’ and ‘AF 1345 Ucraniana,’ were prepared in three concentrations w/v (5 g, 10 g, and 20 g of dry mass 100 mL-1). The experiment was conducted in a germination chamber for 15 days, with lettuce (Lactuca sativa L.) as the recipient plant. There was complete inhibition of germination under 20% w/v extracts and partial inhibition at 10% w/v. Only 5% w/v observed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Avena sativa L.; Avena strigosa Schreb; Weed; Germination; Inhibition.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582019000100297

Weed Flora of Fayoum (Egypt), One of the Oldest Agricultural Regions in the World
Provedor de dados: 87
Autores: AL-SHERIF,E.A.; ISMAEL,M.A.; KARAM,M.A.; ELFAYOUMI,H.H.
ABSTRACT: Fayoum region is the most fertile agricultural land in Egypt and one of the oldest agricultural city in the world. The present study aimed to determine its weed flora composition and its distribution through different habitats. Results recorded 175 species of vascular plants belonging to 124 genera and 35 families distributed in eight habitats. The richest families were Poaceae, Asteraceae (Compositae) and Fabaceae (Leguminoseae), while genera with the highest number of species were Euphorbia, Amaranthus and Cyperus. Cynodon dactylon and Alhagi graecorum were the present species, recorded at all habitats. Old cultivated lands recorded the highest species number followed by orchard habitats, on the contrast road side and wasteland habitats...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Arable fields; Weed; Therophytes; Agriculture; Flora.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100234

Sticky Nightshade Infestation and Dispersion on an Integrated Soybean-Eucalyptus System at Subtropical Brazil
Provedor de dados: 87
Autores: DEISS,L.; MORAES,A.; PELISSARI,A.; PORFÍRIO-DA-SILVA,V.; DOMINSCHEK,R.
ABSTRACT: Trees in integrated crop-livestock systems can reduce infestation and dispersion of weeds because of a negative interference promoted by competition for light, water and nutrients. The objective of this study was to evaluate the infestation and dispersion of sticky nightshade (Solanum sisymbriifolium) in soybean in different positions between eucalyptus (Eucalyptus dunnii) double rows [20 m x (4 m x 3 m)] in an integrated crop-livestock system at Subtropical Brazil. The experiment was conducted in a randomized block design, with nine replications, and five equidistant positions between double rows (n=45) as treatments. Sticky nightshade was evaluated for infestation through biomass, plant density (reproductive and vegetative plants), and for...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Integrated crop-livestock systems; Weed; Alley cropping; Ecophysiology; Agroforestry.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100207

Use of herbicides on turfgrass
Provedor de dados: 87
Autores: McElroy,J.S.; Martins,D.
In crop production, weeds must be controlled so as not to adversely affect crop yield and crop quality. Thus, a low level of weeds infesting a field, in most instances, is not a problem. Except in sod or seed production, turfgrass does not have a yield component. The value of turfgrass is its inherent aesthetic quality and usability. Aesthetic quality is the beauty and value that turfgrass adds to a managed landscape. Usability can be the durability of a sport field, trueness of golf putting green roll, or reduction in soil loss from water runoff or wind. Any weed presence in turfgrass can decrease the aesthetic quality and usability of turfgrass. Utilizing herbicides is the only way to completely control weeds in a turfgrass stand. While it is possible to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Preemergence; Postemergence; Selectivity; Chemical control; Weed.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000200024

Quantifying seed production by volunteer canola (Brassica napus) and Sinapis arvensis
Provedor de dados: 87
Autores: Soltani,E; Soltani,A; Galeshi,S; Ghaderi-far,F; Zeinali,E.
Volunteer canola (Brassica napus) and Sinapis arvensis are well identified weeds of different cropping systems. Quantitative information on regarding seed production by them is limited. Such information is necessary to model dynamics of soil seed banks. The aim of this work was to quantify seed production as a function of the size of those weeds. A wide range of plant size was produced by using a fan seeding system performed at two sowing dates (environments). Plant size varied from 3 to 167 g per plant for canola and from 6 to 104 g per plant for S. arvensis. Seed production ranged from 543 to14,773 seeds per plant for canola, and from 264 to 10,336 seeds per plant for S. arvensis. There was a close relationship between seed production per plant and plant...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weed; Plant size; Density; Planting.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582011000300003

Sensitivities of Urochloa decumbens Plants to Glufosinate
Provedor de dados: 87
Autores: BRITO,I.P.F.S.; MARCHESI,B.B.; TROPALDI,L.; CARBONARI,C.A.; VELINI,E.D.
ABSTRACT: This study aimed to assess the response of Urochloa decumbens plants to different doses of glufosinate ammonium, and the sensitivity of plant population to the herbicide. Two studies were conducted, both in greenhouse and repeated at different times. In the dose-response analysis, two experiments were conducted using seven doses of the glufosinate ammonium (0, 50, 100, 200, 400, 800, and 1,600 g a.i. ha-1) with four replications each. In the analysis of sensitivity levels of U. decumbens to herbicide, 44 plants were sprayed with a dose of 200 g a.i. ha-1 of the herbicide. Tissue ammonium content was determined, and injury percentage was visually assessed. Experiment data were converted to mg of ammonium per kg-1 of fresh mass and submitted to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Ammonia; Glutamine synthetase; Weed; Variability.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100238

Biological Management of Basal Rot of Onion by Trichoderma harzianum and Withania somnifera
Provedor de dados: 87
Autores: AKHTAR,R.; JAVAID,A.
ABSTRACT: Onion is attacked by destructive soil-borne fungal plant pathogen Fusarium oxysporum f. sp. cepae, resulting in basal rot disease. In the present study, three Trichoderma species (T. pseudokoningii, T. harzianum and T. reesei) and leaves of solanaceous weed Withania somnifera were used for management of this disease. The in vitro interaction study revealed T. harzianum as the most effective biocontrol agent against the pathogen. In a pot trial, dried leaf material of W. somnifera (1%, 2% and 3% w/w) and inoculum of T. harzianum were mixed in the pot soil previously inoculated with the pathogen. The highest incidence of the disease (87%) was found in positive control (pathogen inoculation without any amendment). Different rates of dry leaf...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Basal plate rot; Biological control; Weed; Withania somnifera.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100216

Seed germination and seedling emergence of velvetleaf (Abutilon theophrasti) and Barnyardgrass (Echinochloa crus-galli)
Provedor de dados: 87
Autores: Sadeghloo,A.; Asghari,J.; Ghaderi-Far,F.
Abutilon theophrasti and Barnyardgrass (Echinochloa crus-galli) are major weeds that affect cropping systems worldwide. Laboratory and greenhouse studies were conducted to determine the effects of temperature, pH, water and salinity stress, and planting depth on seed germination and seedling emergence of Velvetleaf and Barnyardgrass. For Velvetleaf, the base, optimum and ceiling germination temperatures were estimated as 5, 35 and 48 ºC, respectively. Seed germination was sensitive to drought stress and completely inhibited by a potential of -0.6 MPa, but it was tolerant to salinity. Salinity stress up to 45 mM had no effect on the germination of Velvetleaf, but germination decreased with increasing salt concentration. Drought and salinity levels for 50%...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: PH; Planting depth; Seed germination; Temperature; Weed.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582013000200003

Economics of controlling a spreading environmental weed
Provedor de dados: 31
Autores: Chalak,   Morteza; Pannell,   David J.
Weeds can cause significant problems to natural ecosystems. Although there have been numerous studies on the economics of weed control, relatively few of these studies have focused on natural ecosystems. This paper addresses this gap in the literature by assessing the cost-effectiveness of a comprehensive range of control strategies for blackberry (Rubus anglocandicans) in natural environments in Australia. We developed a stochastic dynamic simulation model and a deterministic dynamic optimisation model. The stochastic model calculates the expected net present value (NPV) of a range of control strategies, including any combination of treatment options. The optimisation model identifies the treatment combination that maximises NPV. Both models represent the...
Tipo: Working or Discussion Paper
Palavras-chave: Environment; Economics; Weed; Stochastic; Optimisation; Management; Environmental Economics and Policy.
Ano: 2011
URL: http://purl.umn.edu/108416

Controlling Phalaris Minor in the Indian Rice-Wheat Belt
Provedor de dados: 31
Autores: Vincent,   David P.; Quirke,   Derek.
The ACIAR-managed project CS1/1996/013, Herbicide-resistant weeds of wheat in India and Australia: integrated management, was designed to find a long-term method of control of Phalaris minor, a problem weed of the rice–wheat cropping system of north-western India. By 1993, the weed had developed resistance to isoproturon, a herbicide which had delivered effective weed control for 15 years. The short-term solution, implemented before the ACIAR project commenced, involved identification and registration of a new set of herbicides. But these new herbicides were expensive. To ensure high adoption they needed to be combined with changes in wheat-growing techniques that would provide cost savings to help farmers pay for them. And to avoid the re-emergence of...
Tipo: Book
Palavras-chave: Herbicide-resistant weeds; Wheat; Weed; India; Australia; Integrated management; Phalaris minor; Rice-wheat cropping systems; Chemical resistance; Weed management; Zero tillage; Cost saving; Net present economy; High benefits; Profitable technology; Agribusiness; Crop Production/Industries; Farm Management; Food Consumption/Nutrition/Food Safety; International Development; Production Economics.
Ano: 2002
URL: http://purl.umn.edu/47696

Optimal control of a stochastic biological invasion
Provedor de dados: 31
Autores: Chalak,   Morteza; Pannell,   David J.
Although there have been numerous studies on the economics of weed control, relatively few of these studies have focused on natural ecosystems. The aims of this papers are: A) to identify the combination of control options that is optimal for blackberry (Rubus anglocandicans) in Australian natural ecosystems, B) to assess whether an integrated control strategy is superior to chemical-only strategies, C) to evaluate the economic net benefits of specific biologically oriented control methods (a rust and grazing by goats), D) to determine how changes in model parameters affect the optimal control strategy. To address these aims, a stochastic dynamic simulation model and a stochastic dynamic programming model are developed. The results indicate that, while an...
Tipo: Presentation
Palavras-chave: Environment; Economics; Weed; Stochastic; Optimisation; Management; Environmental Economics and Policy.
Ano: 2012
URL: http://purl.umn.edu/124373

Economics of controlling a spreading environmental weed
Provedor de dados: 31
Autores: Chalak-Haghighi,   Morteza; Pannell,   David J.
Weeds can cause significant problems to natural ecosystems. Although there have been numerous studies on the economics of weed control, relatively few of these studies have focused on natural ecosystems. This paper addresses this gap in the literature by assessing the cost-effectiveness of a comprehensive range of control strategies for blackberry (Rubus anglocandicans) in natural environments in Australia. We developed a stochastic dynamic simulation model and a deterministic dynamic optimisation model. The stochastic model calculates the expected net present value (NPV) of a range of control strategies, including any combination of treatment options. The optimisation model identifies the treatment combination that maximises NPV. Both models represent the...
Tipo: Conference Paper or Presentation
Palavras-chave: Environment; Economics; Weed; Stochastic; Optimisation; Management; Environmental Economics and Policy.
Ano: 2010
URL: http://purl.umn.edu/58886

Issues, impacts, and prospects of the first transgenic crops tolerant to a herbicide. The case of glyphosate-tolerant soybean in the USA
Provedor de dados: 31
Autores: Bonny,   Sylvie.
IAAE 2009 International Conference
Tipo: Conference Paper or Presentation
Palavras-chave: Genetically modified crop; GMO; Biotechnology; Agro-economic impact; Environmental impact; Sustainability; Soybean; Pesticide; Weed; Prospects; Herbicide; Glyphosate; Agricultural and Food Policy; Crop Production/Industries; Environmental Economics and Policy; Production Economics; Research and Development/Tech Change/Emerging Technologies; Q55; O3; O13; O51.
Ano: 2009
URL: http://purl.umn.edu/51449

AGGREGATION ISSUES IN PEST CONTROL ECONOMICS: A BIOECONOMIC APPROACH
Provedor de dados: 31
Autores: Young,   Douglas L.; Smith,   Elwin G.; Kwon,   Tae-Jin.
Previous research has defined “aggregate pesticide expenditures” as the control variable; however, virtually all managerial recommendations and environmental restrictions target specific pesticides, rates, and crops. A bioeconomic approach considering particular pesticides on specific pests and crops is recommended for managerial-policy applications and testing for increasing returns. Exponential weed control and seven popular yield damage functional forms were estimated for a bioeconomic weed control model for winter wheat in Washington. Concavity with respect to herbicide rate was observed for most popular damage functions at normal weed densities and manufacturers’ label rates, but convexity existed outside these ranges and should be checked.
Tipo: Conference Paper or Presentation
Palavras-chave: Bioeconomic; Data aggregation; Herbicide; Increasing returns; Pest control; Pesticide; Weed; Crop Production/Industries.
Ano: 2000
URL: http://purl.umn.edu/36448

Origin and temperature on the germination of beggartick seeds
Provedor de dados: 91
Autores: Barros,Renato T. de; Martins,Cibele C.; Silva,Givanildo Z. da; Martins,Dagoberto.
ABSTRACT The invasive behavior of beggarticks (Bidens pilosa L.) in cropped areas is due to its ecological adaptation and aggressive regeneration, which is dependent on seed germination. The objective of this research was to verify the effects of B. pilosa seed origin and temperature on seed germination. The seeds were collected in Entre Rios do Oeste, PR, Botucatu, SP, Capão Bonito, SP, São Joaquim da Barra, SP, Sertãozinho, SP, Selvíria, MS, Barra do Garças, MT, Areia, PB and Manaus, AM. The seeds were evaluated regarding moisture content, 1000-seed weight, germination speed index and germination at 60 days (normal seedlings, dormant seeds and dead seeds) at the temperatures of 10, 15, 20, 25, 30, 35, 40, and 45 ºC. The replicates were distributed...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bidens pilosa; Weed; Production sites; Dormancy.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000700448

Initial growth of Brachiaria subquadripara (Trin.) Hitchc. plants under different nutritional conditions
Provedor de dados: 91
Autores: Domingos,Vanessa D.; Martins,Dagoberto; Costa,Neumarcio V.; Costa,Andreia C. P. R. da; Marchi,Sidnei R. de.
ABSTRACT The objective of this study was to evaluate the initial growth of emergent plants of Brachiaria subquadripara under different conditions of availability levels of the nutrients nitrogen (N), phosphorus (P), and potassium (K) provided to the plants via nutrient solution in a greenhouse. The treatments consisted of five concentrations of N (0, 42.0, 84.0, 126.0, and 168.0 mg L-1), five concentrations of P (0, 6.2, 12.4, 18.6, and 24.8 mg L-1) and five concentrations of K (0, 46.8, 93.6, 140.4, and 187.2 mg L-1) which were adapted from a base solution. The results showed that the initial growth of plants was slow up to 21 days after transplantation (DAT) and it increased in accordance with increments in N, P, and K concentrations in the nutrient...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Urochloa subquadripara; Urochloa arrecta; Aquatic plant; Weed; Eutrophication; Water reservoir.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015000600560

A new species of Amblyseius Berlese (Acari, Phytoseiidae) from the state of Rio Grande do Sul, Brazil
Provedor de dados: 92
Autores: Ferla,Noeli Juarez; Silva,Guilherme Liberato.
A new species of Amblyseius Berlese, A. vitis sp. nov. is described from Dois Lajeados, State of Rio Grande do Sul. The specimens were collected on Stachys arvensis L. (Lamiaceae) and Plantago tomentosa Lam. (Plantaginaceae).
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Plantago tomentosa; Predator; Stachys arvensis; Vitis labrusca; Weed.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262009000400003

Seed reserve composition and mobilization during germination and initial seedling development of Euphorbia heterophylla
Provedor de dados: 93
Autores: SUDA,CECILIA N.K.; GIORGINI,JARBAS F.
Seed composition and reserve mobilization were investigated in wild poinsettia (Euphorbia heterophylla L.). Lipids, around 60% of seed dry mass, are the major reserve. Proteins, including albumins (49%), salt insoluble globulins (30%), salt-soluble globulins (21%) and prolamins (0.3%), comprise about a quarter of seed dry mass. Soluble sugars comprise about 3.6% of seed dry mass, sucrose being the predominant sugar. Starch was not detected in the endosperm of E. heterophylla. Lipid depletion starts after initial imbibition, and is completed between 72 and 96 hours. Protein fractions exhibit different degradation patterns, salt-soluble globulins being continuously degraded after the start of imbibition whereas salt insoluble fractions are degraded between...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weed; Wild poinsettia; Euphorbiaceae; Proteins; Lipids; Carbohydrates.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-31312000000300006

Brachiaria brizantha control by using fluazifop-p-butil on Tifton 85 pasture formation
Provedor de dados: 96
Autores: Santos,Márcia Vitória; Ferreira,Francisco Affonso; Freitas,Francisco Cláudio Lopes de; Fonseca,Dilermando Miranda da; Carvalho,Abner José de; Braz,Thiago Gomes dos Santos.
This study was carried out with the aim of assessing the efficacy of the fluazifop-p-butyl herbicide to control Brachiaria brizantha, cultivar Marandu, in the formation of Tifton 85 grazing. Treatments consisted of five doses of fluazifop-p-butyl herbicide (0.0, 62.5, 125.0, 187.5 and 250.0 g ha-1) plus controls with no herbicide, in a completely randomized layout, with four replications. Each plot consisted of a 10-L capacity pot, with two B. brizantha plants and two Tifton 85 plants. The herbicide application was conducted before the tillage of B. brizantha, when they were about 15 cm high. Visual assessments of control of B. brizantha and intoxication of Tifton 85 plants, at 07, 21 and 45 days after application were carried out. Sixty days after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chemical control; Tolerance; Weed.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000200007

Quantification, chemical and biological characterization of the saponosides material from Sida cordifolia L. (escobilla)
Provedor de dados: 98
Autores: Velásquez Ballesteros,Oscar Julián; Murillo Perea,Elizabeth; Jairo Méndez,John; Murillo Arango,Walter; Noreña,Diana Alexandra.
Introduction: Sida cordifolia L. (Malvaceae) is a weed about which not much is known in Colombia. This plant is used in folk medicine to treat oral mucosa, blennorrhea, asthma and bronchitis.In Brazil it finds application as an anti-inflammatory,while in Colombia its "baba" is used for treating hair loss, constipation and internal fever, among other ailments. Objectives: to quantify the saponoside content and evaluate its antioxidant and antifungal functionality. Methods: we prepared organic, aqueous and hydroalcoholic extracts from the aerial section of the plant. The saponoside material was quantified by the DNS and p-anisaldehyde methods. The most concentrated extracts were selected for antioxidant and antifungal assays. Results: it was found that Sida...
Tipo: Journal article
Palavras-chave: Sida cordifolia; Saponins; Weed; Antioxidant; P-anisaldhyde.
Ano: 2013
URL: http://scielo.sld.cu/scielo.php?script=sci_arttext&pid=S1028-47962013000200013

Soil seed banks
Provedor de dados: 63
Autores: Christoffoleti,P.J.; Caetano,R.S.X.
The goal of this literature review is to discuss some of the major aspects of the soil seed bank, from its characteristics down to methodological aspects of its determination. Soil seed bank is the reservoir of viable seeds or of vegetative propagules that are present in the soil and that are able to recompose a natural vegetation. In the agroecossystems the soil seed bank is related to weeds, and the knowledge of its size and composition in terms of species can be used in the prediction of future infestations, to built simulation models of population establishment through time and also the definition of soil and cultural management programs, in order to have a rational use of herbicides.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weed; Soil seed bank; Population dynamics.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161998000500013

Competition effects with mixed stands of wheat and kochia (Kochia scoparia) biotypes resistant and susceptible to acetolactase synthase inhibitor herbicides
Provedor de dados: 63
Autores: Christoffoleti,P.J.; Westra,P.
Greenhouse experiments were conducted to compare the competitive ability of sulfonylurea resistant and susceptible kochia (Kochia scoparia L. Schard) compared to wheat. The results of several replacement series experiments indicate that wheat was the dominant competitor, and an average of one wheat plant reduced resistant kochia yield per plant equal to the effect of 4.8 resistant kochia or 5.4 susceptible kochia plants. Intraspeciflc competition was more important than interspecific competition for wheat, whereas the reverse was true for the resistant and susceptible kochia. The results of the niche differentiation index (NDI) indicate that wheat and either resistant or susceptible kochia are only partly limited by the same resources. The resistant and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weed; Herbicide resistance; Sulfonylurea; Kochia scoparia; Weed-crop competition.
Ano: 1994
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161994000200008

Brachiaria decumbens supresses the initial growth of Coffea arabica
Provedor de dados: 63
Autores: Dias,Guilherme Faus da Silva; Alves,Pedro Luís da Costa Aguiar; Dias,Tomás Carneiro de Souza.
Brachiaria decumbens is becoming one the most common weeds growing in young coffee orchards because, besides its fast growth and difficulty of control, new coffee orchards are usually established in pasture areas. In order to verify the effect of B. decumbens plant density on the early growth of coffee (Coffea arabica L. cv. Catuaí Amarelo), a competition experiment was conducted under semi-controlled humidity conditions. Soil collected in a Typic Haplustox was placed in 70 L asbestos cement boxes and one coffee seedling was planted in each box. The B. decumbens seedlings were transplanted to the boxes at the 2-4 leaf stage. Treatments consisted of 0, 4, 8, 12, 16, 20, 24, 36, 48, and 60 weeds m-2. The experimental period started 120 days after...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Weed; Coffee; Competition; Growth suppression.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162004000600003

การใช้ Dimethenamid ควบคุมวัชพืชในข้าวโพดหวาน
Provedor de dados: 106
Autores: Sodsai Changsaluk; Rungsit Suwanketnikom.
6 tables
Palavras-chave: Corn; Maize; Weed; Sweet corn; Dimethenamid; ข้าวโพด; ข้าวโพดหวาน; สารควบคุมวัชพืช; ไดเมทธีนามิด; การควบคุมวัชพืช.
Ano: 2003
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4552

ผลของสารสกัดหยาบจากข่าต่อการงอกและการเจริญเติบโต ของพืชปลูกและวัชพืชบางชนิด
Provedor de dados: 106
Autores: Supatra Khamriang; Wantana Sinsiri; Naris Sinsiri; Waranyu Kaewduangta.
In this study, crude extract of Alpinia galangal (Linn.) Swartz was separated into 2 fractions by column chromatography. The seeds of 6 species of crops and weeds (Oryza sativa, Zea mays L., Arachis hypogaea, Brassica iboglabra, Praxellis clematidea and Echinachola colonum) were placed in media containing either fraction A or B at various concentrations of 1%, 3% and 5%. The percentages of germination and growth of each species were measured. Fraction A at 5% resulted in the highest inhibition of germination for Oryza sativa, Zea mays L., Arachis hypogaea and Brassica iboglabra. In contrast, the germination of Praxellis clematidea and Echinachola colonum was most inhibited on media containing fraction B at 5%. The growth of the leaf width and stem length...
Tipo: Collection
Palavras-chave: Alpinia galangal (Linn.) Swartz; Crude extract; Growth; Plant pest; Weed; Brassica iboglabra; Praxellis clematidea; Oryza sativa; Zea mays L; Arachis hypogaea; Praxellis clematidea; Echinachola colonum; Weed control; ข่า; สารสกัดหยาบ; การเจริญเติบโต; วัชพืช; การกำจัดวัชพืช; การควบคุม; หญ้าสาบนก; หญ้าสาบม่วง; ข้าว; ข้าวโพด; ถั่วลิสง; คะน้า; การยับยั้งการงอก.
Ano: 2014
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5838

ประสิทธิภาพสารกำจัดวัชพืชในการปลูกข้าวโพดที่มีการเตรียมดินต่างกัน
Provedor de dados: 106
Autores: Tawee Sangtong; Weerawat Nilrattanakoon.
7 tables
Palavras-chave: Corn; Maize; Weed; Soil preparation; Chemical weed control; ข้าวโพด; สารกำจัดวัชพืช; การเตรียมดิน.
Ano: 2003
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/4553

การปรับปรุงดินก่อนปลูกอ้อยโดยใช้ประโยชน์จากวัชพืชในธรรมชาติ และวัสดุหรือพืชบำรุงดินชนิดต่างๆ
Provedor de dados: 106
Autores: Santimaitree Gonkhamdee; Prasit Jaisil; Wanwipa Kaewpradit Polpinit; Tassanee Wongphet.
Tipo: PhysicalObject
Palavras-chave: Sugarcane; Sugarcane production; Soil improvement; Weed; Green manure; Upland rice; Crotalaria juncea; Filter cake; Soil amendment; Fallow; Soil management; Organic matter; Total nitrogen; Available phosphorus; อ้อย; การปลูกอ้อย; การปรับปรุงดิน; วัชพืช; พืชบำรุงดิน; ข้าวไร่; ปอเทือง; วัสดุปรับปรุงดิน; กากตะกอนหม้อกรอง; การจัดการดิน; อินทรียวัตถุ; ปริมาณไนโตรเจนทั้งหมด; ปริมาณฟอสฟอรัสที่เป็นประโยชน์; การเพิ่มความอุดมสมบูรณ์ดิน; วิธีการที่เหมาะสม; การลดต้นทุนการผลิต.
Ano: 2012
URL: http://anchan.lib.ku.ac.th/agnet/handle/001/5823

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

Effects of burning and weed control on vegetation cover and soil organic matter compartments in the Brazilian Amazon
Provedor de dados: 109
Autores: Marinho Lisboa,Fabrício.
Abstract The aim of this study was to evaluate the effects of burning and manual control of invasive species on a Latossolo Vermelho-Amarelo soil covered with Urochloa brizantha. Five soil samples were collected for pasture and forest, at 0-5 cm depth, to determine the accumulated respiration, microbial biomass carbon (MBC), mild organic matter, total organic carbon (TOC), water soluble carbon and MBC:TOC ratio. Three groups according soil grass coverage were selected: (1) group I with 33.5% of bare soil, (2) group 2 with 90% coverage and (3) group 3 with 53.4% coverage of invasive species. The highest value of TOC was found in forest (36.52 g/kg). The highest accumulative value of respiration in the soil was observed in group 3 (2.6 mg/kg) and the highest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Bare soil; Organic carbon; Urochloa brizantha; Weed.
Ano: 2018
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000300389

Estimativa da área foliar de Ageratum conyzoides usando dimensões lineares do limbo foliar - DOI: 10.4025/actasciagron.v30i4.5311
Provedor de dados: 1
Autores: Bianco, Silvano; UNESP; Bianco, Matheus Saraiva; UNESP; Carvalho, Leonardo Bianco de; UNESP.
Com o objetivo de obter uma equação matemática que, por meio de parâmetros lineares dimensionais das folhas, permita a estimativa da área foliar de Ageratum conyzoides, estudaram-se relações entre a área foliar real (Sf) e parâmetros dimensionais do limbo foliar, como o comprimento ao longo da nervura principal (C) e a largura máxima (L) perpendicular à nervura principal, em 200 limbos foliares. Foram utilizados os modelos estatísticos: linear Y = a + bx; linear simples Y = bx, geométrico Y = axb e exponencial  Y = abx. Os modelos estatísticos lineares, exponenciais e geométricos obtidos podem ser usados para estimação da área foliar do mentrasto. Do ponto de vista prático, sugere-se optar pelo modelo linear simples, envolvendo o produto C*L, com...
Palavras-chave: 5.01.00.00-9    Agronomia planta daninha; Análise de crescimento; Mentrasto. growth analysis; Weed; Billygoat weed.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5311

Potencial alelopático de Ipomoea fistulosa sobre a germinação de alface e tomate - DOI: 10.4025/actasciagron.v30i3.3553
Provedor de dados: 1
Autores: Lima, Juliana Domingues; UNESP; Moraes, Wilson da Silva; APTA.
O objetivo do presente trabalho foi determinar o potencial alelopático de Ipomoea fistulosa na germinação e crescimento de plântulas. Em laboratório, sementes de alface e de tomate foram colocadas para germinar na presença de água ou extratos de folhas de Ipomoea fistulosa, nas concentrações de 5, 10 e 15% (p/v). Em casa-de-vegetação, as sementes foram colocadas para germinar em bandejas, contendo o substrato Plantmax® e o substrato Plantmax® + resíduo de folhas secas de Ipomoea fistulosa, na proporção 3% (p/p). O extrato aquoso inibiu a germinação e elevou o tempo médio de germinação das sementes, além de reduzir o crescimento da radícula e hipocótilo em todas as concentrações utilizadas. Em casa-de-vegetação, a altura da planta, o número de folhas, o...
Palavras-chave: 5.01.00.00-9 Agronomia Ipomoae fistulosa; Planta daninha; Alelopatia 5.01.03.00-8 Fitotecnia Ipomoea fistulosa; Weed; Alellopathy.
Ano: 2008
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3553

Determination of Merremia cissoids leaf area using the linear measures of the leaflets - doi: 10.4025/actasciagron.v33i3.6379
Provedor de dados: 1
Autores: Carvalho, Leonardo Bianco; FCAV-UNESP; Bianco, Silvano; FCAV-UNESP; Galati, Valéria Cury; UNESP; Panosso, Alan Rodrigo; FCAV-UNESP.
Knowledge of the weed leaf area may give support to study the interference relationships between weeds and crops. The objective of this research was to determine a mathematical equation for M. cissoides leaf area estimation based on the relationship between the leaf blade linear measures. Leaves of the species were collected from a variety of agroecosystems at São Paulo State University, Jaboticabal, São Paulo State, Brazil, measuring the length (L), maximum width (W) and real leaf blade area of the three kinds of leaflets. Linear equations Y = a x (X) were estimated for each kind of leaflet. The confidence intervals of the primary leaflet equation overlapped those ones from the secondary leaflet equation, and then only one equation was considered for...
Palavras-chave: Weed; Growth; Roadside woodrose; Linear fit Weed; Growth; Roadside woodrose; Linear fit.
Ano: 2011
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/6379

Molecular characterization of accessions of crabgrass (Digitaria nuda) and response to ametryn - DOI: 10.4025/actasciagron.v32i2.3841
Provedor de dados: 1
Autores: Vieira, Viviane Cristina; Faculdade de Ciências Agrárias e Veterinárias/Universidade Estadual Paulista; Alves, Pedro Luís da Costa Aguiar; Faculdade de Ciências Agrárias e Veterinárias/Universidade Estadual Paulista; Picchi, Simone Cristina; Faculdade de Ciências Agrárias e Veterinárias/Universidade Estadual Paulista; Lemos, Manoel Victor Franco; Faculdade de Ciências Agrárias e Veterinárias/Universidade Estadual Paulista; Sena, Janete Apparecida Desidério; Faculdade de Ciências Agrárias e Veterinárias/Universidade Estadual Paulista.
Digitaria species are sugar cane crop weeds in Brazil and are being controlled with herbicides, although there are some reports of control failure, notably to the triazine group. Molecular techniques are recommended to analyze the genetic variability in weeds. RAPD (Random Amplified Polymorphic DNA), PCR-RFLP (Polymerase Chain Reaction – Restriction Fragment Length Polymorphism) and, in combination with sequencing, allow the localization of resistance genes, as well as possible mutations related to the onset of resistant individuals in some species. Thus, the objective of this work was to characterize ten accessions of Digitaria spp. by RAPD and PCR-RFLP markers, to sequence a conserved region of the psb A gene and evaluate the accessions response to...
Palavras-chave: Digitaria; PsbA gene; RAPD; Sequencing; Triazine; Weed Digitaria; PsbA gene; RAPD; Sequencing; Triazine; Weed.
Ano: 2010
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/3841

Pollination ecology of the tropical weed Triumfetta semitriloba Jacq. (Tiliaceae), in the South-eastern Brazil
Provedor de dados: 57
Autores: COLLEVATTI,ROSANE G.; CAMPOS,LÚCIO A. O.; SILVA,ALEXANDRE F. DA.
This work aimed to study the pollination ecology of the tropical weed Triumfetta semitriloba Jacq. (Tiliaceae), in Viçosa, South-eastern Brazil, during the flowering season of 1993 and 1994. Two patches located in pasture (P1 and P2) and one patch in a forest trail (P3) were chosen and ten plants on each patch were sorted. The number of opened flowers were counted during one day, in each flowering month and patch. All observed flower visitors were identified and their behavior while visiting flowers was recorded. Frequency of visits to flowered branches was obtained and some pollinator individuals were captured for analysis of pollen load. Flowers are conspicuously yellow and actinomorphic, with five nectaries around the ovary base, and opened sequentially...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pollination; Triumfetta semitriloba; Tiliaceae; Tropical bees; Weed.
Ano: 1998
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71081998000300004

Fresh matter production by two forms of Oxalis latifolia as influenced by soil and climate
Provedor de dados: 118
Autores: Royo-Esnal,Aritz; López,María Luisa.
Oxalis latifolia is a widely distributed weed that mainly affects corn fields, orchards, plant nurseries and gardens. Two forms of the weed have been identified: the common form, with fish-tailed leaflets, bulbils growing on stolons and dark pink flowers, and the Cornwall form, with rounder leaflets, sessile bulbils and whitish-pale pink flowers. In this study, the fresh matter production, expressed as the increase of the bulbs' fresh weight, of both forms was compared during two growing seasons in two locations. The bulbs were grown in pots from spring to autumn, and different aspects of growth were measured at the end of each season. The total fresh matter production, weight of the apical bulb, total weight of the lateral bulbs and number of lateral...
Tipo: Journal article
Palavras-chave: Bulb; Climate; Oxalis; Soil conditions; Weed.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000200007

Effect of water stress on herbicide efficiency applied to Urochloa decumbens
Provedor de dados: 118
Autores: Rocha-Pereira,Maria R; Klar,Antônio E; Martins,Dagoberto; Ferreira de Souza,Guilherme S; Villalba,Juana.
This project aimed to measure the control efficiency of Acetil Coenzime A Carboxilase (ACCase)-inhibiting herbicides post-emergence applied to Urochloa decumbens (Stapf) R.D. Webster under different soil water contents. The experiment was conducted in a greenhouse at the Department of Plant Production, Faculty of Agronomic Sciences, UNESP, Botucatu, São Paulo. The experimental design was a completely randomized design with four replications, consisting of a 9 x 4 factorial, combined with three water management systems (-0.03, -0.07 and -1.5 MPa) and three herbicides (fluazifop-p-butyl, haloxyfop-methyl and sethoxydim + oil using four doses (100, 50, 25 and 0% of the recommended dose). Herbicide applications were conducted at two vegetative stages for all...
Tipo: Journal article
Palavras-chave: Chemical control; Graminicide; Water restriction; Weed.
Ano: 2012
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202012000100018

Interference periods of velvet bean in sugarcane
Provedor de dados: 65
Autores: Bressanin,Fernanda Nunes; Jayme Neto,Nelson; Nepomuceno,Mariluce Pascoalina; Alves,Pedro Luís da Costa Aguiar; Carrega,Willians César.
ABSTRACT: The objective of the present study was to determine the periods of interference of velvet bean on ratoons of sugarcane cultivar 'RB855536' and to identify its potential for decreasing the crop yield and the quality of the harvested product. The experiment was arranged in a randomized block design, with 18 treatments divided into two groups and four replicates per treatment. In the first group, the sugarcane was kept free from velvet bean interference for nine different periods, beginning at bud sprouting: 0-15, 0-30, 0-45, 0-60, 0-90, 0-120, 0-150, and 0-180 days after budding (DAB) and 0-harvest. In the second group, sugarcane was grown in coexistence with velvet bean during the same periods described for the first group. The critical period of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Saccharum spp.; Mucuna aterrima; Weed; Competition.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000801329