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| Registros recuperados: 17 | |
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| Silva,Isley Cristiellem Bicalho da; Basílio,Josiana Jussara Nazaré; Fernandes,Luiz Arnaldo; Colen,Fernando; Sampaio,Regynaldo Arruda; Frazão,Leidivan Almeida. |
| ABSTRACT: The production of biochar from organic residues promises to be an interesting strategy for the management of organic waste. To assess the effect of biochar on soil properties and the production and nutrition of common bean (Phaseolus vulgaris L.), three simultaneous experiments were conducted in a greenhouse with different biochar from organic residues (rice husk, sawdust, and sorghum silage) used as filtration material for swine biofertilizer. In each experiment the treatments consisted of five different biochar concentrations (0, 25, 50, 75 and 100 L m−3), arranged in a completely randomized design, with four repetitions. In the experiments, the use of biochar increased soil pH, cation exchange capacity, nutrient availability in the soil, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris L.; Agricultural residues; Biochar; Soil fertility. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162017000500378 |
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| FONTANA, A.; CAMPOS, D. V. B. de. |
| O carbono no solo pode ser encontrado principalmente como componente mineral, em estruturas de carbonatos (CaCO3, MgCO3 etc.) ou em estruturas orgânicas, componente de resíduos de animais e plantas em diversas fases de transformação ou como carvão (carbono pirogênico) proveniente de eventos naturais de incêndios ou aplicado ao solo como biochar ou biocarvão. Na determinação do carbono orgânico (C org) em solo via úmida pela oxidação com o dicromato de potássio, apenas aquele proveniente de materiais orgânicos facilmente oxidáveis ou decomponíveis é quantificado, sendo discriminado o oriundo de compostos carbonáticos ou recalcitrantes como o carvão (Walkley; Black, 1934). |
| Tipo: Capítulo em livro técnico (INFOTECA-E) |
Palavras-chave: Carbono orgânico; Carbono; Biochar. |
| Ano: 2017 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1107196 |
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| Figueredo,Natália Aragão de; Costa,Liovando Marciano da; Melo,Leônidas Carrijo Azevedo; Siebeneichlerd,Evair Antônio; Tronto,Jairo. |
| ABSTRACT The biochar, product of pyrolysis of organic waste, has been used as a soil conditioner and alternative on solid waste management. However, the raw material and pyrolysis temperature used influence the quantity and dynamics of release of nutrients and contaminants from the biochar. The objective was to evaluate the use of waste sugarcane bagasse, eucalyptus and sewage sludge for production of biochar and determine the chemical, physical, mineralogical properties and acid extraction of these materials produced at 350 °C and 500 °C. Were evaluated the proportion of C, H, N, O; ashes; macro and micronutrients, plus some contaminants; characterization of mineral phases by diffractometry of X- rays; functional groups by infrared absorption spectroscopy... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biochar; Waste; Acid extraction. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902017000300003 |
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| Gondim,Rubens S.; Serrano,Luiz A. L.; Maia,Aline de H. N.; Silva,Janderson P. da. |
| ABSTRACT Important losses of dwarf cashew seedlings during the establishment of orchards in the Brazilian semiarid are related to the relatively short rainy season. This study aimed to evaluate biochar and hydrophilic polymer as soil amendments to increase water retention and reduce plant death in the first year. An experiment was conducted at the Curu Station, Paraipaba, CE, Brazil, using the clone BRS 226. The experimental design consisted of randomized blocks, with amounts of 0.5, 1.0, 2.0, and 4.0 kg of cashew wood biochar and 20, 40, 60, 80 g of hydrophilic polymer applied per pit, as well as a control treatment (no soil amendment). Seedlings were submitted to an irrigation regime to avoid water stress (5 L water seedling−1 when the tensiometer... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anacardium occidentale L.; Climate change; Adaptation; Soil amendment; Biochar. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162020000300344 |
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| Andrade,Cristiano Alberto de; Bibar,Maria Paula Silveira; Coscione,Aline Reneé; Pires,Adriana Marlene Moreno; Soares,Álvaro Guedes. |
| O objetivo deste trabalho foi caracterizar o processo de mineralização do C em amostras de cama de frango e de seu respectivo biocarvão, além de determinar a capacidade de troca catiônica (CTC) e as taxas de mineralização do C nos solos tratados com cama de frango e biocarvão. A mineralização do C foi avaliada em experimento com quantificação do C-CO2 liberado a partir de incubação (64 dias) de misturas de solo com cama de frango e de solo com biocarvão, em doses equivalentes a 0, 1.000, 2.000, 4.000 e 8.000 mg kg-1 de C. Ao final da incubação, determinaram-se, nas amostras de solo, o teor de C, o pH e a CTC. A mineralização do C dos materiais obedeceu à cinética química de primeira ordem. Os fluxos de C-CO2 foram mais intensos dos 20 aos 40 dias de... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biochar; Carbono do solo; Mineralização do carbono; PH do solo; Sequestro de carbono; Taxa de mineralização.. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2015000500407 |
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| Gonzaga,Maria Isidória Silva; Souza,Danyelle Chaves Figueiredo de; Almeida,André Quintão de; Mackowiak,Cheryl; Lima,Idamar da Silva; Santos,José Carlos de Jesus; Andrade,Raquel Santos de. |
| ABSTRACT: Biochar has been used worldwide as an efficient soil amendment due to its beneficial interaction with soil particles and nutrients; however, studies on the effect of biochar on the availability of nutrients such as N and P in tropical soils are still missing. The objective of the study was to evaluate the effect of different types and doses of biochars on the concentration and uptake of N and P in Indian mustard plants (Brassica juncea L.) grown in a Cu contaminated soil during three successive growth cycles. The greenhouse experiment was set up as randomized block design in a 3x3 factorial scheme, with 3 types of biochars (coconut shell, orange bagasse and sewage sludge) and three rates of application (0, 30 and 60t ha-1), and 4 replicates.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biochar; Pyrogenic carbon; Copper contamination; Plant nutrition; Brassica juncea. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000100250 |
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| FERREIRA, C. M.; SILVA, M. A. S. da; MACHADO, P. L. O. de A.; CARVALHO, M. T. de M.; RODRIGUES, C. R.; SANTOS, A. B. dos; HEINEMANN, A. B.; DAMIN, V.; CASTOLDI, G.; MADARI, B. E.; FLORES, R. A.. |
| Português: O objetivo do Projeto Nucleus é aprimorar a eficiência de uso do nitrogênio (EUN), por meio da ampliação, compreensão e superação das lacunas de conhecimento sobre aspectos agronômicos, melhorando a sincronia entre a disponibilidade de N do solo em quantidade adequada e a necessidade das plantas e, em consequência, proporcionar condições de melhorar o seu aproveitamento e reduzir perdas. Assim, a investigação de fontes, práticas e manejos menos propensos a perdas de N, propiciam à cultura expressar o seu potencial produtivo, reduzindo custos e impactos nos aspectos social e ambiental e contribuindo para a segurança alimentar. Inglês: The objective of Nucleus project is to enhance our understanding of the key agronomic aspects of nitrogen use... |
| Tipo: Fôlder / Folheto / Cartilha (INFOTECA-E) |
Palavras-chave: Nitrogênio; Relação Solo-Planta; Segurança Alimentar; Transferência de Tecnologia; Nitrogen; Biochar; Soil-plant interactions; Technology transfer. |
| Ano: 2018 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1101031 |
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| Villagra-Mendoza, Karolina; Carvajal-Vanegas, Dorian; Beck-Broichsitter, Steffen; Horn, Rainer. |
| Biochar is considered as an option to ameliorate soil functions, by improving soil physical and hydraulic soil properties. This study investigated the effect of biochar and of wetting and drying cycles on the water infiltration at laboratory and at a hypothetical watershed scenario. In the laboratory, test samples with 2.5 and 5% (by dry mass) of a mango-wood biochar were added to a sandy and sandy loam soil material. Cumulative infiltration was determined after simulated intense wetting and drying cycles, by drying the samples at 30°C for three consecutive days. Additionally, biochar amended soil hydraulic parameters, obtained at the laboratory, were used to simulate the water discharge of a hypothetical watershed, with the Soil and Water Assessment Tool... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Infiltration; Watershed; Biochar; Surface runoff; Wetting; Drying. |
| Ano: 2020 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5562 |
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| Petter,Fabiano André; Madari,Beáta Emöke; Silva,Mellissa Ananias Soler da; Carneiro,Marco Aurélio Carbone; Carvalho,Márcia Thaís de Melo; Marimon Júnior,Ben Hur; Pacheco,Leandro Pereira. |
| The objective of this work was to evaluate the effect of biochar made from Eucalyptus on soil fertility, and on the yield and development of upland rice. The experiment was performed during two years in a randomized block design with four replicates, in a sandy loam Dystric Plinthosol. Four doses of NPK 05-25-15, annually distributed in stripes (0, 100, 200 and 300 kg ha-1), and four doses of biochar (0, 8, 16 and 32 Mg ha-1), applied once in the first year - alone or with NPK - were evaluated. In the first year, biochar positively affected soil fertility [total organic carbon (TOC), Ca, P, Al, H+Al, and pH], at 0-10 cm soil depth, and it was the only factor with significant effect on yield. In the second year, the effect of biochar diminished or was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biochar; Macronutrients; Plant biomass; Plant growth; Soil acidity; Rice yield. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2012000500010 |
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| Paiva,Diogo Mendes de; Guimarães,Gelton Geraldo Fernandes; Teixeira,Breno Cardoso; Cantarutti,Reinaldo Bertola. |
| ABSTRACT Functionalized charcoal (CHox) incorporated into urea is known for its ability to reduce NH3 volatilization and increase agronomic efficiency. However, it is important to optimize the functionalization process and to elucidate its relationship with the physicochemical properties of CHox for N supply. Thus, charcoal obtained from eucalyptus wood was functionalized with different HNO3 concentrations and reaction times. Ammonia adsorption by CHox was evaluated in chambers with high NH3 concentrations. Dry matter yield, N uptake, and apparent N recovery efficiency of corn plants were evaluated after the application of the urea-CHox mixture to soil in a greenhouse experiment. The properties of CHox, such as pH, isoelectric point, and total acidity... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biochar; NH3 adsorption; NH3 volatilization; Efficient fertilization. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832019000100305 |
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| Registros recuperados: 17 | |
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