Synthetic Herbicide
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. Application time affects synthetic auxins herbicides in tank-mixture with paraquat on hairy fleabane control
ABSTRACT Conyza sp. was the first glyphosate-resistant weed in Brazil’s soybean crop. Synthetic auxin herbicides followed by paraquat has improved the hairy fleabane control, and time of day of herbicide application can affect the control efficacy. There are no studies reporting the effects of the application time of synthetic auxins in tank-mixture with p
Rev. Ceres. Publicado em: 2021-06
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2. SYNTHESIS AND PHYTOTOXIC PROFILE OF A NEW TETRAOXANE DESIGNED FROM A COMMERCIAL AUXIN
Modern agriculture relies on the massive use of agrochemicals, including herbicides. Despite their effectiveness, a continuous use of herbicides sharing the same target has resulted in the selection of weed biotypes resistant to such chemicals. To cope with this problem, the development of new herbicides is an urgent requirement. In this work we applied the
Quím. Nova. Publicado em: 20/07/2020
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3. 2D, 3D and Hybrid QSAR Studies of Nostoclide Analogues as Inhibitors of the Photosystem II
Synthetic herbicides are widely used for weed control in crops. Continuous application of chemicals induces the adaptation of weeds, leading to the development of resistance. Therefore, research for novel synthetic herbicides plays an important role in crop protection and food production. Within this context, it is important to understand the relationship be
J. Braz. Chem. Soc.. Publicado em: 2019-02
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4. POTENTIAL DRIFT AND INJURY OF HERBICIDES SPRAYED IN A WIND TUNNEL
ABSTRACT The possibility of synthetic auxin applications in crops increases the risk of injury to sensitive plants. The aim of this study was to quantify the drift of herbicides sprayed in a wind tunnel and the injury in cotton plants. The experimental design was a completely randomized design with five treatments and four replications. The tested spray solu
Eng. Agríc.. Publicado em: 2019-02
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5. Synthesis and Characterization of Mesoporous Nb2O5 and Its Application for Photocatalytic Degradation of the Herbicide Methylviologen
This article reports the characterization of mesoporous Nb2O5 synthesized by the sol-gel method for application in photocatalysis. The emerging contaminant methylviologen was employed for photocatalytic tests. Parameters inherent to the synthesis process, such as stirring rate, aging temperature, and calcination temperature, were employed for a range of valu
J. Braz. Chem. Soc.. Publicado em: 2016-02
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6. Auxinic herbicides, mechanisms of action, and weed resistance: A look into recent plant science advances
Auxin governs dynamic cellular processes involved at several stages of plant growth and development. In this review, we discuss the mechanisms employed by auxin in light of recent scientific advances, with a focus on synthetic auxins as herbicides and synthetic auxin resistance mechanisms. Two auxin receptors were reported. The plasma membrane receptor ABP1
Sci. agric. (Piracicaba, Braz.). Publicado em: 2015-08
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7. Alelopatia e bioprospecção em Rapanea ferruginea e Rapanea umbellata
Allelopathy is a process that involves primary or secondary metabolites produced by plants and microorganisms, which influences the growth and development of agricultural and biological systems. The intensity of plant allelopathic effects may depend on the hábitat, age and the biotic and abiotic conditions during the seasons in which they were collected. Wh
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/07/2011
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8. Técnicas modernas em espectrometria de massas aplicadas no isolamento de bioherbicidas produzidos por microrganismos / Modern Techniques on Mass Spectrometry applied to the isolation of bioherbicides produced by microorganisms
In this work a quick and efficient methodology was employed for the identification of phytotoxic metabolites produced by microorganisms. The isolation of the bioactive compound was guided by Lemna minor bioassay. Mass spectrometry, especially LC-MS, was used to accelerate the process of identification of the phytotoxin. All bacteria were symbiotic to the phy
Publicado em: 2008
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9. Efeitos da inibição da protoporfirinogênio IX oxidase sobre as trocas gasosas e fluorescência da clorofila a em plantas de soja (Glycine max L. Merrill) / Effects of inhibition of protoporphyrinogen oxidase IX on gas exchange and chlorophyll fluorescence of soybean plants (Glycine max L. Merrill)
The photosynthetic fixation of CO2 depends on the capture of light energy by the harvest complex (chlorophyll b and carotenoids), which transfer the energy to the photosystems reaction centers (chlorophyll a). The electrons transfer chain established between the photosystems generates reducing power necessary for the CO2 fixation in the Calvin cycle. The int
Publicado em: 2008
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10. A comunidade bacteriana endofítica e epifítica de soja (Glycine max) e estudo da interação endófitos-planta. / Endophytic and epiphytic bacterial community from soybean (Glycine max) and study of the interaction endophytes-plant.
Bactérias endofíticas e epifíticas podem conferir ao seu hospedeiro características como maior resistência a condições de estresse, alterações nas condições fisiológicas, fixação de nitrogênio atmosférico, suprimento de nutrientes, produção de reguladores de crescimento vegetal, entre outros. Desta forma, o presente trabalho teve por objeti
Publicado em: 2004
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11. Isolation of a Pseudomonas sp. Which Utilizes the Phosphonate Herbicide Glyphosate
A strain of bacteria has been isolated which rapidly and efficiently utilizes the herbicide glyphosate (N-phosphonomethylglycine) as its sole phosphorus source in a synthetic medium. The strain (PG2982) was isolated by subculturing Pseudomonas aeruginosa ATCC 9027 in a synthetic broth medium containing glyphosate as the sole phosphorus source. Strain PG2982
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12. A synthetic cryIC gene, encoding a Bacillus thuringiensis δ-endotoxin, confers Spodoptera resistance in alfalfa and tobacco
Spodoptera species, representing widespread polyphagous insect pests, are resistant to Bacillus thuringiensis δ-endotoxins used thus far as insecticides in transgenic plants. Here we describe the chemical synthesis of a cryIC gene by a novel template directed ligation–PCR method. This simple and economical method to construct large synthetic genes c
The National Academy of Sciences of the USA.