Organic System
Mostrando 1-12 de 1158 artigos, teses e dissertações.
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1. Agronomic performance and physicochemical quality of tomato fruits under organic production system
ABSTRACT Tomatoes are a highlight in the organic vegetables production, but in order to cultivate them, there is a lack of information on cultivars adapted to the organic system. The objective of this study was to evaluate the productive performance and to characterize the quality attributed to tomato fruits under the organic production system. The experimen
Revista Ceres. Publicado em: 2022
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2. ENHANCED REMOVAL OF PERSISTENT CONTAMINANTS AND TOXICITY REDUCTION THROUGH THE APPLICATION OF A TRIPLE-STAGE FENTON PROCESS TO SANITARY LANDFILL LEACHATES FROM YUCATAN, MEXICO
Sanitary landfill leachate (SLL) is a mixture of highly toxic and recalcitrant pollutants that threatens the water quality of the Yucatán Peninsula karst aquifer, one of the most extensive aquifers on the planet. To reduce the adverse environmental impacts of this wastewater, a triple-stage Fenton process (FP) was applied in an old SLL. Removal efficiencies
Química Nova. Publicado em: 2022
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3. Mapping of areas suitable for the application of biosolids in the Quadrilátero Ferrífero region, Minas Gerais, Brazil
Abstract The recovery of degraded areas is imperative for the sustainability of mining activities. The main action implemented to improve the chemical, physical and biological conditions of soils, tailings and sterile deposits is the incorporation of organic material. Biosolids (hygienized sewage sludge) are among the organic materials that can be applied. H
REM - International Engineering Journal. Publicado em: 2022
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4. Performance of potato cultivars grown in the organic production system
RESUMO Neste trabalho, avaliou-se o desempenho das cultivares de batata em sistema orgânico de produção, visando identificar aquelas com maior potencial produtivo e menos danificadas por Phytophthora infestans e Diabrotica speciosa. O experimento foi conduzido durante as safras de 2013/2014 e 2014/2015. Avaliou-se as cultivares Ágata, Aracy Ruiva, Vitór
Horticultura Brasileira. Publicado em: 2022
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5. Novel Greener Microwave-Assisted Deprotection Methodology for the 1,3-Dioxolane Ketal of Isatin Using Calix[n]arenes
In this work, the combined use of p-sulfonic acid-calix[n]arene and microwave energy to hydrolyze the 1,3-dioxolane ketal of isatin was evaluated with excellent results. This is the first time that p-sulfonic acid-calix[n]arene has been used as the catalyst in a ketal hydrolysis reaction and the deprotection of the ketone carbonyl of isatin is reported. The
Journal of the Brazilian Chemical Society. Publicado em: 2022
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6. ADSORPTION OF ATRAZINE IN RICE HUSK BIOCHARS: A PHENOMENOLOGICAL MODEL APPLIED TO EQUILIBRIUM AND KINETIC STUDIES
ABSTRACT Atrazine is an herbicide used to remove weeds in agricultural crops; however, because it is considered toxic, options for removing it from the environment are needed. Adsorption on biochar is an efficient technique for removing organic contaminants. In this study, the atrazine adsorption capacities of two biochars (BCA400 and BCA700) produced from r
Engenharia Agrícola. Publicado em: 2022
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7. Analysis of the economic viability of organic production system of ornamental pineapple plants for cut stems
Resumo O crescimento da floricultura brasileira é notável e é percebido tanto no número de produtores, quanto na área cultivada. Visando a reduzir os custos e agregar valor, a produção de abacaxizeiros ornamentais com produção orgânica pode ser uma opção direcionada a mercados consumidores. O trabalho foi conduzido na Fundação José Carvalho, E
Ornamental Horticulture. Publicado em: 2022
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8. GROWTH ANALYSIS AND PHOTOASSIMILATED PARTITION IN ARROWROOT PLANTS IN ORGANIC CROP SYSTEM
RESUMO A araruta (Maranta arundinaceae) planta tradicional usada para extração de fécula de excelente qualidade nutricional, medicinal e isenta de glúten, é pouco estudada quanto ao seu crescimento e desenvolvimento em cultivo orgânico. Esse trabalho teve por objetivo avaliar o crescimento e a partição de fotoassimilados em plantas de duas cultivares
Revista Caatinga. Publicado em: 2022
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9. Soil carbon stocks and labile fractions of organic matter under agroforestry system in breast of pernambucan altitude
Resumo O intenso preparo e revolvimento do solo em cultivos, com o tempo, reduz a quantidade e a qualidade da matéria orgânica do solo. Diante desse contexto, este trabalho teve como objetivo determinar os estoques de carbono do solo e frações lábeis sob sistema agroflorestal (SAF) e topossequências em brejo de altitude, em Taquaritinga do Norte, Perna
Ciência Florestal. Publicado em: 2022
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10. Electrochemical Preparation and Evaluation of Cytotoxic Activity of Methoxyl-oxo-biseugenol, a New Oxidized Derivative of Biseugenol
Electrochemical procedures have emerged as a powerful tool for the synthesis of complex organic molecules including transformation of natural products. In this study, the electrosynthesis of biseugenol in MeOH afforded one new oxidized derivative, which was characterized as methoxyl-oxo-biseugenol (MOB) by nuclear magnetic resonance (NMR) and electrospray io
J. Braz. Chem. Soc.. Publicado em: 2021-05
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11. Protein Removal from Natural Rubber Latex with Fe3O4@Al2O3 Nanoparticle
The presence of protein in the natural rubber latex for the medical device manufacture seems to be the most considered compound due to its allergic effect. Magnetic coated alumina (Fe3O4@Al2O3) has been known as an adsorbent for organic substrates due to its performance through physical and/or chemical interaction. In the current study, we tried to figure ou
J. Braz. Chem. Soc.. Publicado em: 2021-02
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12. Interaction of Suspended Particulate Material with Cd2+ and Pb2+ in a Brazilian Lagoon Estuarine System
The suspended particulate material (SPM) present in waters has fundamental importance for a better understanding of environmental behaviors of aquatic pollutants. This work determined the physicochemical parameters (pH, temperature, conductivity, total organic carbon and metals concentration) in water samples from Mundaú-Manguaba estuarine-lagoon system, Al
J. Braz. Chem. Soc.. Publicado em: 2021-01