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Registros recuperados: 7
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Eficiência e qualidade da aplicação de misturas em tanque com adjuvantes na dessecação de corda-de-viola REA
Maciel,Cleber D. de G.; Neto,Antonio M. de Oliveira; Guerra,Naiara; Justiniano,Wagner.
O objetivo do trabalho foi avaliar se a utilização de adjuvantes nas misturas em tanque de glyphosate + chlorimuron-ethyl e glyphosate + carfentrazone-ethyl influenciam na qualidade da aplicação e eficiência de controle de Ipomoea grandifolia. Treze tratamentos, dispostos em delineamento inteiramente casualizado, foram constituídos pelas misturas em tanque de glyphosate + chlorimuron-ethyl (1.440 + 12,5 g ha-1) e glyphosate + carfentrazone-ethyl (1.440 + 10 g ha-1) isoladas e associados aos adjuvantes Nimbus®, Joint Oil®, Naturl'Oil®, Triunfo 515® e All Fix ®, e uma testemunha sem aplicação. Os adjuvantes utilizados foram eficientes na redução da tensão superficial das caldas; no entanto, não influenciaram nos valores de deposição e na eficiência do...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tecnologia de aplicação; Glyphosate; Chlorimuron-ethyl; Carfentrazone-ethyl.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162011000400009
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Weed control and selectivity herbicides pre emerging in garlic cultivars Planta Daninha
Guerra,Naiara; Haramoto,Renan; Schmitt,Jaqueline; D. Costa,Gabriel; Schiessel,Juliano J.; M. Oliveira Neto,Antonio.
Abstract Background: Garlic cultivation is characterized by low capacity of competition with weed, mainly due to the characteristics of the canopy and it´s slow initial growth that make it difficult to cover the soil. Objective: This work aimed to evaluate the efficiency and selectivity of herbicides applied in the pre-emergence of two garlic cultivars in the edaphoclimatic condition of Santa Catarina State. Methods: Two experiments were carried out in the commercial garlic area with Ito and Chonan cultivars. Both experiments were conducted in randomized block design. The traits for Ito cultivar were without weed control, with weed control, with linuron (810 g ha-1), diuron (1,000 g ha-1), pendimethalin (1600 g ha-1), S-metolachlor (1200 g ha-1),...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Allium sativum; Residual activity; Pendimethalin.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100322
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Off-season management with herbicides as an alternative to reduce weed infestation in paddy rice production systems Planta Daninha
M. Oliveira Neto,Antonio; Guerra,Naiara; Noldin,José A..
Abstract Background: Weed management is a challenge in paddy rice production, mainly due to the dispersal of a population resistant to herbicides. Objective: To assess the efficacy of chemical weed control in the off-season to reduce weedy rice and other species in water-seeded or drilled rice. Methods: Two experiments were carried out in a flat field to water-seeded or drilled rice, in randomized block design. The water-seeded system treatments were organized in a split-plot design. In the plot were evaluated two water management in the off-season (with or without continuous flooding), and in the subplot nine herbicides-treatments were evaluated (Check, clomazone at 0.72 and 1.08 kg a.i. ha-1, oxadiazon at 1.00 and 1.50 kg a.i. ha-1, oxyfluorfen at...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Drill-seeded; Water-seeded; Residual herbicides; Pre-germinated; Oryza sativa.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100339
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Sensitivity of weedy rice populations to Quizalofop Planta Daninha
M. Oliveira Neto,Antonio; Guerra,Naiara; Coffin,Maxwell; R. Burgos,Nilda; de Andrade,Alexander; Noldin,José A..
Abstract Background: Rice lines displaying resistance to quizalofop-p-ethyl (quizalofop), an acetyl coenzyme A carboxylase (ACCase)-inhibiting herbicide, were developed to facilitate control of imidazolinone-resistant weedy rice (red rice), as well as other susceptible grasses. Objective: To assess the sensitivity of weedy rice accessions from Brazil to quizalofop. Methods: Two bioassays were conducted on the greenhouse from March to June 2016, in a completely random design with a two-factor factorial combination of treatments and four replications. The factor A was weedy rice accession and factor B was quizalofop rates (0, 25 and 50 g a.i. ha-1). It was assessed a total of 84 genotypes in the two bioassays, composed of 78 weedy rice accessions, 4...
Tipo: Info:eu-repo/semantics/report Palavras-chave: Aryloxyphenoxypropionate; ACCase inhibitor; Red rice; Oryza sativa.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100650
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Spatial and temporal distribution of weeds in no-tillage system AGRIAMBI
Bottega,Eduardo L.; Pegoraro,Camilo; Guerra,Naiara; Oliveira Neto,Antonio M. de; Queiroz,Daniel M. de.
ABSTRACT Brazil is one of the largest grain producers in the world, due to its extensive arable land and favorable climate for the cultivation of any species. The production could be higher, but problems such as competition between crops and weeds reduces crop yields. This study aimed to analyze the spatial distribution of weeds, especially milkweed (Sonchus oleraceus), horse weed (Conyza spp.) and ‘maria-mole’ (Senecio brasiliensis) in an area under no-tillage system for two harvests. The work was carried out during the 2013/14 and 2014/15 crop years in an area of 22.5 ha, where soybean is grown in the summer and oat in the winter. The weeds were mapped using a sampling grid of 85 points. The number of plants present in 0.25 m2 was recorded at each...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Precision agriculture; Spatial variability; Sonchus oleraceus; Conyza spp.; Senecio brasiliensis.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001201107
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Interval between the application of metsulfuron-methyl and sowing soybean in different production environments Rev. Ciênc. Agron.
Guerra,Naiara; Oliveira Neto,Antonio Mendes de; Schmitt,Jaqueline; Carneiro,Adriano Lopes; Kopko,Lucas Barco; Jochem,Wilian.
ABSTRACT The persistence of herbicides in the soil is extremely important for controlling weeds during the critical period of weed interference, and for determining which substitute crops might be sown. The aim of this study was to evaluate the effect of metsulfuron-methyl when applied at different times in relation to sowing soybean, seeking to determine a safe interval between its application and sowing the legume under different conditions of soil and climate. Two experiments were conducted, one in the district of Campo Mourão in the state of Paraná (PR) (2014/15 crop) and the other in Curitibanos in the state of Santa Catarina (SC) (2015/16 crop). Both experiments were carried out in a randomised block design with four replications. The treatments were...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carryover; Sulphonylurea; Phytotoxicity; Productivity; Glycine max.
Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902020000200411
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Levantamento fitossociológico de plantas daninhas em cafezal orgânico Bragantia
Maciel,Cleber Daniel de Goes; Poletine,Juliana Parisotto; Oliveira Neto,Antônio Mendes de; Guerra,Naiara; Justiniano,Wagner.
A adequação de um cafezal para o sistema orgânico causa grande mudança no sistema de manejo de plantas daninhas, mas as informações sobre o comportamento da comunidade infestante em áreas de cultivo de café orgânico são escassas no Brasil. Objetivou-se com este trabalho realizar um levantamento fitossociológico da comunidade infestante em três cafezais (variedades Mundo Novo, Bourbon Vermelho e Obatã) desenvolvidos em sistema orgânico, no município de Garça (SP). Nas três áreas estudadas foram arremessados ao acaso cem quadrados metálicos com área vazada de 0,25 m², nas entrelinhas da cultura. As espécies contidas no interior dos quadros foram identificadas segundo a espécie botânica, nome popular e família. A partir dos resultados, determinaram-se os...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fitossociologia; Coffea arabica; Cultivares; Agricultura orgânica.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052010000300015
Registros recuperados: 7
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