Effects The Herbicide
Mostrando 25-36 de 129 artigos, teses e dissertações.
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25. Glucose mineralization in soils of contrasting textures under application of S-metolachlor, terbuthylazine, and mesotrione, alone and in a mixture
ABSTRACT Microbial adaptation may occur in surface soils under agricultural uses exposed to herbicides. However, little is known about herbicide mixture effects in the soil, especially in tropical regions like Brazil. The aim of this study was to evaluate glucose mineralization in soils of contrasting textures (sandy clay and sandy loam) from areas cultivate
Bragantia. Publicado em: 18/12/2017
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26. Effects of monosulfuron-ester on metabolic processes of nitrogen-fixing cyanobacteria Anabaena flos-aquae and Anabaena azotica
Abstract Presence of the relatively new sulfonylurea herbicide monosulfuron-ester at 0.03-300 nmol/L affected the growth of two non-target nitrogen-fixing cyanobacteria (Anabaena flos-aquae and Anabaena azotica) and substantially inhibited in vitro Acetolactate synthase activity, with IC50 of 3.3 and 101.3 nmol/L for A. flos-aquae and A. azotica, respectivel
Braz. J. Microbiol.. Publicado em: 2017-07
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27. Effect of buctril super (Bromoxynil) herbicide on soil microbial biomass and bacterial population
The present study aimed to evaluate the effect of bromoxynil herbicide on soil microorganisms, with the hypothesis that this herbicide caused suppression in microbial activity and biomass by exerting toxic effect on them. Nine sites of Punjab province (Pakistan) those had been exposed to bromoxynil herbicide for about last ten years designated as soil 'A' we
Braz. arch. biol. technol.. Publicado em: 2014-02
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28. Changes in the accumulation of shikimic acid in mycorrhized Capsicum annuum L. grown with application of glyphosate and phosphorus
When glyphosate is added to the soil, it is absorbed by roots and transported by xylem causing growth inhibition in plants. Mycorrhiza is the beneficial association between roots of most plants and soil fungi. The methylphosphonic group of the glyphosate could compete with inorganic phosphates for sorption sites in the soil. The aim of this work was to study
Theor. Exp. Plant Physiol.. Publicado em: 2013
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29. Efecto del glifosato sobre el crecimiento y acumulación de azúcares libres en dos biotipos de lolium perenne de distinta sensibilidad al herbicida
The systemic movement of glyphosate is determined by the transport of photoassimilates. In turn, the capacity of a destination to consume assimilates is conditioned by their metabolic activity. Despite its importance, the relationship between the glyphosate and the sugar synthesis from source leaves has been little studied. The aim of this work was to determ
Planta Daninha. Publicado em: 2012-03
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30. Efeito da associação do herbicida clomazone a nanoesferas de alginato/quitosana na sorção em solos
Agrochemicals constitute the class of products most commonly found in water resources. Their high level of concentration is due to the fact that less than 0.1% of pesticides applied to crops reach their target. The present work aims to study the sorption of clomazone herbicide (associated or not with nanoparticles). The sorption tests, performed with the 2(4
Química Nova. Publicado em: 2012
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31. Oxidação eletroquímica do herbicida tebutiuron utilizando eletrodo do tipo DSA
Tebuthiuron (TBH) is a herbicide widely used in different cultures and known for its toxic effects. Electrochemical methods are promising for removing pollutants such as pesticides. This study showed the degradation of TBH using a DSA® anode operated at current densities of 50 to 200 mA cm-2. Removal presented pseudo-first order kinetics while high-pressure
Quím. Nova. Publicado em: 2012
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32. Aplicação da trifluralina no controle da intrusão radicular de tubogotejadores enterrados sob lavoura cafeeira / Application of trifluralin in root intrusion control of subsurface drip under coffee
The objective of this research was to investigate effects of different doses and frequency of application of the herbicide Trifluralin to avoid root intrusion in subsurface drip irrigation in a coffee field during its initial development (6 to 18 months). While the space between rows was 2.5 meters, space between plants was 0.5 meters. A completely randomize
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/08/2011
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33. 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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34. Produtividade e características fisiológicas do consórcio milho-braquiária / Productivity and physiological characteristics of Corn-Brachiaria Intercrop
Three experiments were installed between the years of 2007 and 2009, two of them made in the field and one held in a greenhouse. Our aims were: experiment 1 - evaluate the effects of emergence time in brachiaria and in the application of atrazine herbicide mixture + nicosulfuron at two levels of fertilization, in photosynthesis, stomatal conductance, transpi
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 08/07/2011
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35. Avaliação dos efeitos do herbicida glifosato sobre o cafeeiro : respostas bioquímicas e fisiológicas / Evaluation of the effects of glyphosate on the coffee : biochemical and physiological responses
O glyphosate é considerado o herbicida mais utilizado em todo mundo. Seu mecanismo de ação baseia-se no bloqueio da rota do chiquimato, interrompendo a síntese dos aminoácidos aromáticos. Observa-se que a sua aplicação de maneira incorreta permite que uma parcela do ingrediente ativo chegue à cultura não-alvo, caracterizando a deriva. O café apare
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 17/02/2011
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36. Adsorption of glyphosate in Chilean soils and its relationship with unoccupied phosphate binding sites.
The objective of this work was to investigate glyphosate adsorption by soils and its relationship with unoccupied binding sites for phosphate adsorption. Soil samples of three Chilean soils series - Valdivia (Andisol), Clarillo (Inceptisol) and Chicureo (Vertisol) - were incubated with different herbicide concentrations. Glyphosate remaining in solution was
Pesquisa Agropecuária Brasileira. Publicado em: 2011