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Caracterização espectroscópica (RPE e DRIFT) das frações húmicas durante a compostagem de lodo de fábrica de papel e serragem PFB - Pesquisa Florestal Brasileira
Maia, Claudia Maria Branco de Freitas; Fukamachi, Cristiane Regina Budziak; Piccolo, Alessandro; Mangrich, Antonio Sálvio.
The spectroscopic characteristics (DRIFT, UV-visible and EPR) of As características espectroscópicas (DRIFT, UV-visível e RPE) das frações húmicas foram estudadas durante a compostagem de serragem e lodo de fábrica de papel. A espectroscopia de infravermelho (DRIFT) revelou um composto rico em hidroxilas, carboxilatos, alquilas e carboidratos. A fração alifática está concentrada nos ácidos húmicos e na humina. A diminuição da razão E4/E6 durante a compostagem indica um aumento de cadeias orgânicas com ligações duplas conjugadas. Esta redução corresponderia a uma diminuição do teor de lignina e/ou a formação de porfirinas. O RPE mostrou que a humina apresenta a concentração mais alta de radicais livres e a menor concentração de Fe3+ livre.doi:...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Substâncias húmicas; UV-vis; Humificação Humic substances; UV-Vis; Humification.
Ano: 2012 URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/303
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Potential of three microbial bio-effectors to promote maize growth and nutrient acquisition from alternative phosphorous fertilizers in contrasting soils Organic Eprints
Thonar, Cécile; Lekfeldt, Jonas D.S.; Cozzolino, Vincenza; Kundel, Domimika; Kulhánek, Martin; Mosimann, Carla; Neumann, Günter; Piccolo, Alessandro; Rex, Martin; Symanczik, Sarah; Walder, Florian; Weinmann, Markus; de Neegaard, Andreas; Mäder, Paul.
Background Agricultural production is challenged by the limitation of non-renewable resources. Alternative fertilizers are promoted but they often have a lower availability of key macronutrients, especially phosphorus (P). Biological inoculants, the so-called bio-effectors (BEs), may be combined with these fertilizers to improve the nutrient use efficiency. Methods The goal of this study was to assess the potential of three BEs in combination with alternative fertilizers (e.g., composted manure, biogas digestate, green compost) to promote plant growth and nutrient uptake in soils typical for various European regions. Pot experiments were conducted in Czech Republic, Denmark, Germany, Italy, and Switzerland where the same variety of maize was grown in...
Tipo: Journal paper Palavras-chave: Soil quality; Crop combinations and interactions; Composting and manuring.
Ano: 2017 URL: http://orgprints.org/31321/1/Thonar_et_al-2017-Chemical_and_Biological_Technologies_in_Agriculture.pdf
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Potential of three microbial bio-effectors to promote maize growth and nutrient acquisition from alternative phosphorous fertilizers in contrasting soils Organic Eprints
Thonar, Cécile; Lekfeldt, Jonas D.S.; Cozzolino, Vincenza; Kundel, Domimika; Kulhánek, Martin; Mosimann, Carla; Neumann, Günter; Piccolo, Alessandro; Rex, Martin; Symanczik, Sarah; Walder, Florian; Weinmann, Markus; de Neergaard, Andreas; Mäder, Paul.
Background: Agricultural production is challenged by the limitation of non-renewable resources. Alternative fertilizers are promoted but they often have a lower availability of key macronutrients, especially phosphorus (P). Biological inoculants, the so-called bio-effectors (BEs), may be combined with these fertilizers to improve the nutrient use efficiency. Methods: The goal of this study was to assess the potential of three BEs in combination with alternative fertilizers (e.g., composted manure, biogas digestate, green compost) to promote plant growth and nutrient uptake in soils typical for various European regions. Pot experiments were conducted in Czech Republic, Denmark, Germany, Italy, and Switzerland where the same variety of maize was grown in...
Tipo: Journal paper Palavras-chave: Composting and manuring; Nutrient turnover.
Ano: 2017 URL: http://orgprints.org/32920/1/Thonar2017-Potential%20of%20three%20microbial%20bio%E2%80%91effectors%20to%20promote%20maize%20growth%20and%20nutrient%20acquisition%20from%20alternative%20phosphorous%20fertilizers%20in%20contrasting%20soils.pdf
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