Agroquímica

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http://repositorio.ufes.br/handle/10/17376

Programa de Pós-Graduação em Agroquímica

Centro: CCENS
Telefone: (28) 3552 8731
URL do programa: http://www.agroquimica.alegre.ufes.br/pos-graduacao/PPGAQ

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Agora exibindo 1 - 20 de 52

Efeito do tratamento de sementes de tomateiro (Solanum lycopersicum L.) com óleo essencial de Origanum vulgare L. e carvacrol na incidência da murcha de fusarium em mudas.
(Universidade Federal do Espírito Santo, 2018-02-23) Gonçalves, Débora Cristina; Queiroz, Vagner Tebaldi de; Costa, Adilson Vidal; Belan, Leônidas Leoni
Tomato plants can be grown in several regions of the world due to its adaptability to different climate types. This crop is susceptible to a series of diseases that reduce the tomato production, among them Fusarium wilt stands out as one of the most impor
Efeito dos óleos essenciais de thymus vulgaris e cinnamomun zeylanicum e seus componentes majoritários sobre o fungo fusarium oxysporum f.sp. lycopersici
(Universidade Federal do Espírito Santo, 2018-02-23) Lima, Wilker Pinheiro; Costa, Adilson Vidal; Queiroz, Vagner Tebaldi de; Belan, Leônidas Leoni
The tomato is the most consumed vegetable in the world, and its cultivation has a great economical and social importance. However, in its cultivation, the incidence of several diseases is favorable, among them the fusarium wilt, caused by Fusarium oxyspor
Análises físico-químicas e avaliação da qualidade de Coffea canephora Pierre e Froehner cultivados no Espírito Santo
(Universidade Federal do Espírito Santo, 2018-02-23) Pinheiro, Carlos Alexandre; Pinheiro, Patrícia Fontes; Oliveira, Daniela da Silva; Fonseca, Aymbiré Francisco Almeida da; Parreira, Luciana Alves; Pereira, Lucas Louzada
The State of Espírito Santo is the leader in the production of Coffea canephora (conilon and robusta) in Brazil. C. canephora is generally cultivated at altitudes below 500 m in hot climate regions. Coffees cultivated in regions with higher altitudes pres
Avaliação da adsorção de Cobre(II) e Cromo(III) utilizando resíduos de mármore branco como material adsorvente não convencional e de baixo custo
(Universidade Federal do Espírito Santo, 2018-02-27) Guimarães, Tiago; Profeti, Demetrius; Brito, Gilberto Augusto de Oliveira; Profeti, Luciene Paula Roberto
The adsorption process of Cu (II) and Cr (III) ions on white marble residue was investigated by batch experiments. The studies were carried out to identify the zero charge point (PCZ) of adsorbent material, time and equilibrium concentrations of Cu (II) a
Estudo da adsorção de Cu(II) utilizando biocarvões de palha de café conilon
(Universidade Federal do Espírito Santo, 2018-02-28) Oliveira, Yago Ricardo de; Profeti, Luciene Paula Roberto; Profeti, Demetrius; Passos, Renato Ribeiro; Tomaz, Marcelo Antônio; BRITO, G. A. O.
Among the various forms of environmental pollution, water pollution with heavy metals is a concern for researchers and government agencies involved in pollution control. Several researches on the adsorption of metal ions by biochar has been developed, whi
Qualidade da Água e do Sedimento de Corpos Hídricos do Município de Alegre, Espírito Santo
(Universidade Federal do Espírito Santo, 2018-05-03) Firmino, Elziane Favoreto Alves; Anastácio, Alexandre dos Santos; Anastácio, Alexandre dos Santos; Ferrari, Jéferson Luiz; Tomaz, Marcelo Antônio
The agricultural activity uses a great amount of agrochemicals for the guarantee and increase of its productivity. However, this practice affects the environment, especially the quality of water bodies. The persistence of agrochemicals in the environment
Síntese e avaliação das atividades fungicida, fitotóxica e citotóxica de derivados do glicerol contendo núcleo 1, 2, 3-triazólico
(Universidade Federal do Espírito Santo, 2019-02-18) Moreira, Luiza Carvalheira; Costa, Adilson Vidal; Queiroz, Vagner Tebaldi de; Morais, Pedro Alves Bezerra
Triazolic compounds are a class that has generated great interest in the scientific environment, since they have a wide range of biological activities and various industrial applications. This work aimed to synthesize a series of derivatives of the glycer
Síntese e avaliação das atividades fungicida, fitotóxica e citotóxica de novos 1, 2, 3-triazóis a partir do glicerol
(Universidade Federal do Espírito Santo, 2019-02-18) Pinto, Roberta Tristão; Costa, Adilson Vidal; Morais, Pedro Alves Bezerra; Queiroz, Vagner Tebaldi de
The use of chemicals in agriculture is one of the most cost-effective management strategies. However, the compounds were subject to a number of resistance problems to microorganisms and weeds, as well as issues of environmental contamination. Triazoles ar
Caracterização química de biocarvão proveniente da casca de eucalipto da espécie "Eucalyptus grandis" em diferentes condições de pirólise
(Universidade Federal do Espírito Santo, 2019-02-21) Polastreli, D'avila Leal; Profeti, Luciene Paula Roberto; Passos, Renato Ribeiro; Profeti, Demetrius
The eucalyptus plantation in Brazil occupies an area of 5.7 million hectares, with emphasis on the states of Minas Gerais, São Paulo and Mato Grosso do Sul. The companies in the planted tree sector generated in 2016, 47.8 million tons of solid waste. Of t
Risco de lixiviação de agroquímicos em ecossistema tropical pertencente a sub-bacia hidrográfica do rio Baunilha, Espírito Santo - Brasil
(Universidade Federal do Espírito Santo, 2019-02-25) Gandine, Simony Marques da Silva; Pires, Fábio Ribeiro; Santos, Gleissy Mary Amaral Dino Alves dos; Queiroz, Vagner Tebaldi de; Santos, Alexandre Rosa
The importance of the river basin as a unit of planning and management is given by its specific qualities. It is believed that they are regions with a diversified ecosystem, vulnerable to anthropic action and susceptible to the misuse of agrochemicals, fa
Caracterizações químicas dos primeiros cultivadores de lúpulo (Humulus lupulus L.) produzidos no Brasil
(Universidade Federal do Espírito Santo, 2019-02-26) Silva, Camila Taiany Delfino; Pinheiro, Patrícia Fontes; Osório, Vanessa Moreira; Pereira, Alexandre Fontes; Osório, Vanessa Moreira; 1º membro da banca
The hops flower (Humulus lupulus L.), used in the production of beers, is responsible to give flavor, aroma and bitterness to the beverage and in addition, it is considered a bactericide and natural preservative. The aromas and bitterness provided by hops
Defensivos alternativos para controle da antracnose e pinta-preta em mamão
(Universidade Federal do Espírito Santo, 2019-02-26) Rodrigues, Lais Oliveira; Zucoloto, Moises; Tomaz, Marcelo Antônio; Belan, Leônidas Leoni
The papaya (Carica papaya L.) is a tropical crop, economically important for Brazil and susceptible to numerous diseases, such as anthracnose (Colletotrichum gloeosporioides) and black-spot (Asperisporium caricae). Due to the possibility of phytopathogens
Síntese catalítica one-pot/tandem de ésteres derivados de eugenol e timol e avaliação de seu potencial herbicida
(Universidade Federal do Espírito Santo, 2019-02-27) Azevedo, Ana Flavia Nunes de Paula; Menini, Luciano; Menini, Luciana Alves Parreira; Fontes, Milene Miranda Praça
Esterification reactions are fundamental to the industry, since its product is applied in several sectors, from fuels to food. However, these reactions happen very slowly, requiring strategies that make them more efficient. Acid catalysis is widely used f
O desenvolvimento de nanoemulsões de timol ou óleo essencial de tomilho para o controle fusarium oxysporum f. sp. lycopersici
(Universidade Federal do Espírito Santo, 2019-02-28) Melo, Davi Cardoso Aguiar de; Queiroz, Vagner Tebaldi de; Costa, Adilson Vidal; Medeiros, Eber Antônio Alves; Maradini Filho, Antônio Manoel
Researches realized have been demonstrated that essential oil of thymol (EO) represent a potential alternative to control Fusarium pxysporum f. sp. lycopersici (FOL). However, the volatility of thymol, of EO and its low solubility in water hamper the in v
Oxidação aeróbica dos monoterpenos Citronelol e Geraniol catalisada por Paládio para síntese de produtos de química fina
(Universidade Federal do Espírito Santo, 2019-03-13) Venancio, Aldino Neto; Parreira, Luciana Alves; Menini, Luciano; Pinheiro, Patrícia Fontes
In this work a catalytic oxidation system was successfully applied for the oxidation of two acyclic monoterpene alcohols, citronellol and geraniol. The catalytic system applied is based on the Wacker process, being used as catalyst palladium(II) acetate a
Síntese e avaliação do efeito fungicida de derivados 6 Hidroxi-Flavanona sobre Fusarium Solani
(Universidade Federal do Espírito Santo, 2020-03-03) Ribeiro, Rayssa; Lacerda Júnior, Valdemar ; https://orcid.org/0000-0002-8257-5443; http://lattes.cnpq.br/9819471276433138; https://orcid.org/0000-0002-6533-3530; http://lattes.cnpq.br/8181366157873974; Paula, Heberth de; https://orcid.org/0000-0001-6197-4165; http://lattes.cnpq.br/0823599580312700; Costa, Adilson Vidal; https://orcid.org/0000-0002-7968-8586; http://lattes.cnpq.br/1638000107452454; Morais, Pedro Alves Bezerra; https://orcid.org/0000-0001-5501-7350; http://lattes.cnpq.br/5220285635137407
Plants are an important source of compounds with pharmacological properties beneficial to human health. Among the classes of natural products, flavonoids comprise a large group of polyphenolic compounds that draws the attention of researchers due to the vast repertoire of biological properties used. The 1,2,3-triazole nucleus is a synthetic heterocyclic that has a variety of biological properties, being applied by 1,3-dipolar cycloaddition. Due to the importance of 6-hydroxy-flavanone (3) and triazoles, widespread use in the literature and in the diversity of biological activities, or the present work aims at the statistics of new 3 ether and triazole episodes, via the chemical click by cycloaddition reaction of azido-catalyzed acid by Cu (I) (CuAAC), preparation of ethers used by Williamson staining, bimolecular nucleophilic substitution (SN2), as well as characterization of the structures of use by spectroscopy techniques 1H and 13C NMR and two-dimensional HSQC, HMBC and COZY and evaluation in biological activity test for Fusarium Solani. In this context, fast synthetic methods and few steps were used for these analyzes 19 compounds of building blocks 3, seven esters that exhibited: 17.4% to 59.3% and triazoles, including between 14.5% to 99.4 %. Finally, it should be noted that 13 analogous compounds from building block 3 were subjected to the evaluation of biological activity against Fusarium Solani
Coleoptera: Scarabaeidae: Scarabaeinae e suas funções na qualidade de solos sob pastagens
(Universidade Federal do Espírito Santo, 2020-03-19) Giestas, Pedro Henrique Charpinel; Mendonca, Eduardo de Sá; https://orcid.org/0000-0003-3284-7129; http://lattes.cnpq.br/4735276653354808; https://orcid.org/0000-0001-9199-065X; http://lattes.cnpq.br/8099384165242070; Burak, Diego Lang; https://orcid.org/0000-0002-6758-3517; http://lattes.cnpq.br/2501042964619476; Santos Junior, Hugo José Gonçalves dos ; https://orcid.org/0000-0002-6780-6610; http://lattes.cnpq.br/8499663924650322
The dominance of degraded pastures in Brazil and the State of Espírito Santo negatively impacts the diversity of organisms and carbon stocks in the soil. Our work aimed at understanding how different levels of degraded pastures and forest fragments affect the diversity and ecological functions performed by dung beetles (Coleoptera: Scarabaeidae: Scarabaeinae) and what is the relationship of these services on soil quality and attributes related to the organic matter in the Caparaó Capixaba region, south of Espírito Santo and in the laboratory. For the field experiment, 21 sample areas were selected, with seven forest fragments (FFL) and 14 pastures (seven with high level of degradation (PAD) and seven with low level of degradation (PBD)) in the municipalities of Alegre and Guaçuí – ES. In these areas, soil samples were collected at depths of 0 to 10 and 10 to 20 cm, CO2 emission samples, resistance to soil penetration, soil temperature and humidity, and ecosystem functions, richness, abundance and composition of dung beetles were also quantified. In the laboratory experiment, 20 experimental PVC structures were filled with soil and bovine feces and divided in two treatments, one containing an individual of Dichotomius bos (n=10) and another treatment without a beetle (n=10). Among the studied environments, PBD showed higher rates of dung burial (246.96 g ± 24.65) and soil excavation (339.08 g ± 58.81). DBP showed lower means for both functions. Pastures reduced the mean richness (1.90 ± 0.29) and abundance (16.52 ± 7.28) of scarabaeinae compared to FFL, being lower in PADs. We did not find any correlation between the richness and abundance of the beetles with the attributes of soil organic matter studied in the field experiment. In the field, PBD had a higher CO2 emission (2.94 cmol-1 ± 0.29) among the areas. In the laboratory experiment, the treatment with the presence of the beetle increased the content of the soil organic matter attributes. The treatment without a beetle showed a higher CO2 emission (9.44 cmol-1 ± 0.91) in the first hours after the feces entered the system. We conclude that PAD favor the increase in the surface runoff of water due to the low vegetation cover and higher values for resistance to penetration, resulting in erosive processes, inefficiency in carbon mobilization and modify the functioning of the ecosystem, negatively influencing the diversity and ecological functions of dung beetles
Adsorção de leuco verde malaquita em biocarvão sintetizado a partir de coroas de abacaxi
(Universidade Federal do Espírito Santo, 2020-06-23) Santos, Cynthia Pereira dos; Profeti, Demetrius; https://orcid.org/0000-0003-4565-3331; http://lattes.cnpq.br/5030262115789096; Profeti, Luciene Paula Roberto; https://orcid.org/0000-0001-6280-2410; http://lattes.cnpq.br/6517975282316378; https://orcid.org/0000-0002-2945-8299; http://lattes.cnpq.br/3990396900334723; Passos, Renato Ribeiro; https://orcid.org/0000-0001-7730-748X; http://lattes.cnpq.br/3882320619443256
Lignocellulosic biomass from agroindustrial waste have been used as a precursor in the synthesis of biochar. The biochar can be applied as an adsorbent material for the adsorption process, making this process more viable and inexpensive than the process with the activated carbon adsorbent. In this study, the biochar synthesized from pineapple crowns, which are considered rejects, was used as an adsorbent material in the adsorption of leucomalachite green in aqueous media. This dye is an organic compound resulting from the reduction of malachite green dye in alkaline solutions, which has toxic, carcinogenic and even mutagenic effects. The biomass (in natura)was characterized with thermogravimetric analysis techniques (TGA/DTG), scanning electron microscopy coupled with X-ray dispersive energy spectroscopy (SEM/EDX), % ash determination, humidity, and soluble and insoluble lignin content. The biochar, was characterized by the determination of zero-point charge (pHzpc), TGA/DTG, X-ray diffraction (XRD) and SEM/EDSanalyses. The results showed the physical and chemical properties of the material, as well as the surface characteristics and the compounds present in the biomass in natura and in the biochar. In the study of adsorption of leucomalachite green, performed in a batch test, was determined that the Sips isotherm model best fitted the adsorption equilibrium, since it presented the highest value of the determination coefficient (R2= 0.957), with maximum adsorption capacity of 4.509 mg g-1 . The equilibrium was reached in 90 minutes following the kinetic model of pseudosecond order. The activation energy of the process was determined by means of the Arrhenius equation (34.15 kJ mol-1 ). The thermodynamic study of the process showed that the adsorption was endothermic and spontaneous
Caracterização e classificação da Lama de Beneficiamento de Rochas Ornamentais (LBRO) de acordo com as etapas produtivas
(Universidade Federal do Espírito Santo, 2020-08-10) Nascimento, Wenderson Abreu Rosa; Neves, Mirna Aparecida; https://orcid.org/0000-0002-3611-6414; http://lattes.cnpq.br/4696981882395783; https://orcid.org/0000-0001-6699-2469; http://lattes.cnpq.br/4108809814810145; Burak, Diego Lang; https://orcid.org/0000-0002-6758-3517; http://lattes.cnpq.br/2501042964619476; Oliveira, Michel Picanço ; https://orcid.org/0000-0001-9241-0194; http://lattes.cnpq.br/6383844066460475
The State of Espírito Santo has a large number of companies that operate in the extraction and processing of dimension stones, and is currently the largest national producer, with an emphasis on the large share of revenues from Brazilian stone slab exports. These activities generate a significant volume of waste, among which, what draws the most attention is the dimension stone processing slurry (DSPS), from the phases of block sawing and plate polishing. Thus, the variation in the physical and chemical parameters of the DSPS depends on the technology used in the processing, the quality or type of component added to the process, in addition to the quantity, which varies considerably from one company to another. Compositional variations also occur depending on the type of processed rock, the stages of water reuse, among other factors. Having the classification and characterization of the LBRO is to provide necessary subsidies for the proper management of the sludge when it is discarded, both for companies and for environmental agencies. In this study, the objective is to characterize and classify the DSPS according to the processing steps (unfolding and polishing) from collections made in companies that have conventional and diamond wire looms, and polishing machines. Therefore, the information presented allowed to classify the DSPS samples and demonstrate that the metals tend to concentrate in the liquid phase of the sludge, and, in the solid phase, the concentrations are attenuated. This demonstrate the relevance of establishing a more detailed monitoring of the raw materials and inputs, which are the components for understanding the formation and composition of the DSPS and thus properly manage the processing of rocks and minimize the appearance of contaminants in the wastes generated
Síntese e avaliação da atividade fitotóxica de novos 1,2,3-triazóis fluorados derivados do eugenol
(Universidade Federal do Espírito Santo, 2021-02-19) Paula, Wenderson Tinorio de; Costa, Adilson Vidal; https://orcid.org/0000-0002-7968-8586; http://lattes.cnpq.br/1638000107452454; https://orcid.org/0000-0002-8266-9466; http://lattes.cnpq.br/2201709243977285; Morais, Pedro Alves Bezerra; https://orcid.org/0000-0001-5501-7350; http://lattes.cnpq.br/5220285635137407; Queiroz, Vagner Tebaldi de; https://orcid.org/000000028170125X; http://lattes.cnpq.br/9963384168622230
Agriculture faces major challenges, going from producing high-quality food in order to feed the world’s growing world to controlling weeds, since they may cause crop yield losses of up to 32% and economic damage, besides being susceptible to herbicide resistance. In this context, developing more efficient compounds at low doses and non-toxic to the environment may be an alternative; for that, triazole organofluorides derived from natural products may be promising, considering that about 25% of licensed herbicides are fluorinated. In this work, we sought to synthesize new organofluorinated compounds containing the 1,2,3-triazolic portion using the natural product eugenol as a starting material. The derivatives were prepared in three stages. In the first one, eugenol was treated with (±) -epichloridine, obtaining (±) -2 - ((4-allyl-2-methoxyphenoxy) methyloxirane) (1) with 90% yield. The azidolysis of (1) with sodium azide resulted in the preparation of (±) -1-(4-allyl-2- methoxyphenoxy)-3-azidopropan-2-ol (2) in 95% yield. The third stage corresponded to the CuAAC reaction (click reaction) between (2) and the alkynes for the formation of 3a-3k. The characterization was performed using spectroscopic methods, such as Infrared, 1H and 13C Nuclear Magnetic Resonance. The phytotoxic activity of monofluorinated derivatives (3b, 3c, and 3d) and difluorinated (3e) at 500 ppm and difluorinated products (3f and 3g) at 250 ppm were stood out.

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