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| Registros recuperados: 243 | |
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| Santos,F.M.; Vargas,L.; Christoffoleti,P.J.; Agostinetto,D.; Mariani,F.; Dal Magro,T.. |
| Horseweed (Conyza spp.) is an annual weed, infesting soybean crops in southern Brazil, with chlorimuron-ethyl being one of the most commonly used herbicides for its control. However, in recent soybean harvests, an unsatisfactory control of this weed using this herbicide was observed, generating suspicion regarding the selection of resistant biotypes. The objective of this study was to evaluate the susceptibility of horseweed biotypes to the herbicide chlorimuron-ethyl. Two experiments were conducted in a greenhouse; in the first one, the biotypes were selected selected, and the second experiment was arranged in a 5 x 5 factorial in a completely randomized design with four replications. The treatments used in the preparation of the dose response curves were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical control; Horseweed; Low level resistance; ALS. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000200021 |
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| 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 |
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| PEREIRA, J. C. R.; GASPAROTTO, L.; COELHO, A. F. S.; VERAS, S. de M.. |
| Embora a bananeira seja tipicamente tropical e que no Estado do Amazonas (Brasil) não ocorram restrições com relação a temperatura, precipitacao, luminosidade, altitude, umidade relativa e vento, a produtividade dos bananais no Estado é incipiente, obrigando a importacoes frequentes para atender a demanda interna. Dentre os fatores que tem contribuido para a baixa produtividade destaca-se a ocorrencia das doencas moko ou murcha bacteriana, mal-do-Panama, sigatoka negra e sigatoka amarela. Essas doencas sao descritas desde seus sintoma ate seu controle. |
| Tipo: Circular Técnica (INFOTECA-E) |
Palavras-chave: Sigatoka amarela; Mal de sigatoka; Brasil; Amazonas; Manaus; Species; Fungal diseases; Mineral deficiencies.; Bactéria; Banana; Deficiência Mineral; Controle Cultural; Controle Químico; Doença de Planta; Estria Vermelha; Espécie; Fungo; Fusarium Oxysporum; Mal do Panamá; Mycosphaerella Fijiensis; Mosaico; Mycosphaerella Musicola; Murcha Bacteriana; Potássio; Ralstonia Solanacearum; Sigatoka Negra; Sintoma.; Musa; Cultural control; Chemical control; Potassium fertilizers.. |
| Ano: 2000 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/669976 |
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| GASPAROTTO, L.; FERREIRA, F. A.. |
| Mal-das-folhas da seringueira: historico de ocorrencias e importancia economica, distribuicao geografica e hospedeiros. Microcyclus ulei: sintomatologia, isolamento, caracteristicas culturais e morfologicas, patogenicidade, variabilidade para virulencia a Hevea spp. e para resistencia ao mal-das-folhas. Ciclo do mal-das-folhas. Epidemiologia do mal-das-folhas. Controle: areas de escape, fungicidas, resistencia da planta, enxertia de copa. |
| Tipo: Capítulo em livro técnico (INFOTECA-E) |
Palavras-chave: Mal-das-folhas; SALB; Morfologia; Ciclo; Virulencia; Brasil; Rubber tree; Fungal diseases; South American leaf blight; Geographic distribution; Host; Symptoms; Isolation methods; Morphology; Cicle; Resistance; Controle Químico; Distribuição Geográfica; Doença; Epidemiologia; Espécie; Folha; Fungo; Hevea; Hospedeiro; Isolamento; Microcyclus Ulei; Patogenicidade; Resistência; Seringueira; Sintoma; Chemical control; Epidemiology; Leaves; Pathogenicity; Virulence. |
| Ano: 1989 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/667342 |
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| KHAN,I.A.; REHMAN,O.U.; KHAN,S.A.; HAMEED ALSAMADANY,; YAHYA ALZAHRANI,. |
| ABSTRACT: To examine the effect of pre emergence herbicides, plant extracts and mulches on yield and yield components of maize, a field experiment was carried out at New Developmental Farm, The University of Agriculture Peshawar-Pakistan during summer crop season 2016. Maize variety “Azam” was sown in Randomized Complete Block (RCB) design having four replications and ten treatments i.e. hand weeding, Dual Gold 960 EC (S-metolachlor 1 L ha-1), Stomp 330 EC (pendimethaline 2.5 L ha-1), atrazine 1.25 L ha-1, Eucalyptus camaldulensis L. extract (125 g L-1), Ammi visnaga L. extract (125 g L-1), black plastic mulch, wheat straw mulch, saw dust mulch and weedy check. The data revealed that hand weeding and herbicides significantly affected the weed density... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Allelopthy; Zea mays L.; Chemical control; Soil cover; Weeds; Crop production. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100228 |
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| Registros recuperados: 243 | |
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