| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Meio Ambiente. |
|
Data corrente: |
08/09/2023 |
|
Data da última atualização: |
08/09/2023 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Autoria: |
MORAIS, G. F. de; SANTOS, J. da S. G.; HAN, D.; RAMOS FILHO, L. O.; XAVIER, M. G. B.; SCHIMIDT, L.; SOUZA, H. T. de; CASTRO, F. T. de; SOUZA-ESQUERDO, V. F. de; ALBIERO, D. |
|
Afiliação: |
GELTON FERNANDO DE MORAIS, UNIVERSIDADE ESTADUAL DE CAMPINAS; JENYFFER DA SILVA GOMES SANTOS, UNIVERSIDADE ESTADUAL DE CAMPINAS; DANIELA HAN, UNIVERSIDADE ESTADUAL PAULISTA; LUIZ OCTAVIO RAMOS FILHO, CNPMA; MARCELO GOMES BARROCA XAVIER, UNIVERSIDADE FEDERAL DE SÃO CARLOS; LEONARDO SCHIMIDT, UNIVERSIDADE ESTADUAL DE CAMPINAS; HUGO THIAGO DE SOUZA, UNIVERSIDADE ESTADUAL PAULISTA; FERNANDA TICIANELLI DE CASTRO, UNIVERSIDADE FEDERAL DE SÃO CARLOS; VANILDE FERREIRA DE SOUZA-ESQUERDO, UNIVERSIDADE ESTADUAL DE CAMPINAS; DANIEL ALBIERO, UNIVERSIDADE ESTADUAL DE CAMPINAS. |
|
Título: |
Agricultural machinery adequacy for handling the mombaça grass biomass in agroforestry systems. |
|
Ano de publicação: |
2023 |
|
Fonte/Imprenta: |
Agriculture, v. 13, n. 7, p. 1416, 2023. |
|
ISSN: |
2077-0472 |
|
DOI: |
https://doi.org/10.3390/agriculture13071416 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Abstract: The current scenario of Agroforestry Systems (AFS) worldwide lacks specific machinery, resulting in practically all operations being carried out manually. This leads to a significant physical effort for small-scale farmers and limits the implementation of AFS to small areas. The objective of the study was to evaluate the suitability of existing machines for performing agroforestry tasks. This research utilizes Descriptive Statistics and Exponentially Weighted Moving Average methods to evaluate the data and compare the treatments, where different machines are used to cut Mombaça grass (Megathyrsus maximus Jacq): (i) costal brushcutter (CBC); (ii) tractor-mounted rotary brushcutter (RBC); and (iii) mini grain reaper machine (GRM). The experiments were conducted in Jaguariúna, São Paulo, Brazil. GRM is recommended for achieving greater biomass production, reducing raking time, and minimizing operational costs. CBC is suitable for smaller areas due to its affordability and slow operation, which requires significant physical effort. RBC is recommended for reducing working time, physical effort, and personnel costs, making it suitable for larger-scale contexts. |
|
Palavras-Chave: |
Agri-machines; Interrow production; Machine suitability. |
|
Thesagro: |
Agrossilvicultura; Biomassa; Capim; Maquina Agrícola. |
|
Thesaurus Nal: |
Agricultural machinery and equipment; Agroforestry; Megathyrsus maximus. |
|
Categoria do assunto: |
A Sistemas de Cultivo |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1156518/1/Ramos-Filho-Agricultural-machinery-2023.pdf
|
|
Marc: |
LEADER 02289naa a2200373 a 4500
001 2156518
005 2023-09-08
008 2023 bl uuuu u00u1 u #d
022 $a2077-0472
024 7 $ahttps://doi.org/10.3390/agriculture13071416$2DOI
100 1 $aMORAIS, G. F. de
245 $aAgricultural machinery adequacy for handling the mombaça grass biomass in agroforestry systems.$h[electronic resource]
260 $c2023
520 $aAbstract: The current scenario of Agroforestry Systems (AFS) worldwide lacks specific machinery, resulting in practically all operations being carried out manually. This leads to a significant physical effort for small-scale farmers and limits the implementation of AFS to small areas. The objective of the study was to evaluate the suitability of existing machines for performing agroforestry tasks. This research utilizes Descriptive Statistics and Exponentially Weighted Moving Average methods to evaluate the data and compare the treatments, where different machines are used to cut Mombaça grass (Megathyrsus maximus Jacq): (i) costal brushcutter (CBC); (ii) tractor-mounted rotary brushcutter (RBC); and (iii) mini grain reaper machine (GRM). The experiments were conducted in Jaguariúna, São Paulo, Brazil. GRM is recommended for achieving greater biomass production, reducing raking time, and minimizing operational costs. CBC is suitable for smaller areas due to its affordability and slow operation, which requires significant physical effort. RBC is recommended for reducing working time, physical effort, and personnel costs, making it suitable for larger-scale contexts.
650 $aAgricultural machinery and equipment
650 $aAgroforestry
650 $aMegathyrsus maximus
650 $aAgrossilvicultura
650 $aBiomassa
650 $aCapim
650 $aMaquina Agrícola
653 $aAgri-machines
653 $aInterrow production
653 $aMachine suitability
700 1 $aSANTOS, J. da S. G.
700 1 $aHAN, D.
700 1 $aRAMOS FILHO, L. O.
700 1 $aXAVIER, M. G. B.
700 1 $aSCHIMIDT, L.
700 1 $aSOUZA, H. T. de
700 1 $aCASTRO, F. T. de
700 1 $aSOUZA-ESQUERDO, V. F. de
700 1 $aALBIERO, D.
773 $tAgriculture$gv. 13, n. 7, p. 1416, 2023.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Meio Ambiente (CNPMA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Agrobiologia. |
|
Data corrente: |
19/07/2019 |
|
Data da última atualização: |
19/11/2019 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 1 |
|
Autoria: |
AQUINO, A. M. de; CANELLAS, L. P.; SILVA, A. P. S. da; CANELLAS, N. O.; LIMA, L. da S.; OLIVARES, F. L.; PICCOLO, A.; SPACCINI, R. |
|
Afiliação: |
ADRIANA MARIA DE AQUINO, CNPAB; UENF; UENF; UENF; UENF; UENF; Università di Napoli Federico; Università di Napoli Federico. |
|
Título: |
Evaluation of molecular properties of humic acids from vermicompost by 13 C CPMAS NMR spectroscopy and thermochemolysis GC MS |
|
Ano de publicação: |
2019 |
|
Fonte/Imprenta: |
Journal of Analytical and Applied Pyrolysis, v .141, 104634, August 2019. |
|
DOI: |
https://doi.org/10.1016/j.jaap.2019.104634 |
|
Idioma: |
Inglês |
|
Conteúdo: |
The molecular characteristics of different vermicomposts, produced with variable rates of cattle manure and cotton residues, and of related humic acids were determined by 13C-CPMAS NMR and Off-line pyrolysis THM-GC?MS. The analyses highlighted a composition of mature vermicomposts based on differential amounts of lignocellulosic fraction and alkyl compounds inherited from original biomasses, thus revealing a decrease of overall hydrophobic character at increasing amounts of cotton input. The evaluation of molecular parameters derived from both solid state NMR spectra and from the specific biomarkers released by thermochemolysis suggested that the humification process was mainly characterized by the selective preservation of specific lignin derivatives. The potential bioactive properties of humic acids were hence evaluated in a bioassays test on maize seedlings. The humic extracts showed a differential response in root growth-promoting effect, depending on the specific molecular features. The higher bioactivity found in humic components isolated from vermicompost with no or low addition of cotton residues, supported the role of the overall hydrophobic character and of the large content of bioavailable lignin units and nitrogen moieties. These results confirm that the combination of solid state NMR and thermochemolysis are valuable and efficient tools to assess the molecular quality of natural organic matter. The detailed molecular characterization of compost materials may hence represent a useful requirement to select the most suitable application of bulk biomasses and derived fractions for soil organic matter managements. MenosThe molecular characteristics of different vermicomposts, produced with variable rates of cattle manure and cotton residues, and of related humic acids were determined by 13C-CPMAS NMR and Off-line pyrolysis THM-GC?MS. The analyses highlighted a composition of mature vermicomposts based on differential amounts of lignocellulosic fraction and alkyl compounds inherited from original biomasses, thus revealing a decrease of overall hydrophobic character at increasing amounts of cotton input. The evaluation of molecular parameters derived from both solid state NMR spectra and from the specific biomarkers released by thermochemolysis suggested that the humification process was mainly characterized by the selective preservation of specific lignin derivatives. The potential bioactive properties of humic acids were hence evaluated in a bioassays test on maize seedlings. The humic extracts showed a differential response in root growth-promoting effect, depending on the specific molecular features. The higher bioactivity found in humic components isolated from vermicompost with no or low addition of cotton residues, supported the role of the overall hydrophobic character and of the large content of bioavailable lignin units and nitrogen moieties. These results confirm that the combination of solid state NMR and thermochemolysis are valuable and efficient tools to assess the molecular quality of natural organic matter. The detailed molecular characterization of compost materials may hen... Mostrar Tudo |
|
Palavras-Chave: |
Cotton residues Humic extracts; Cow manure; Molecular characterization; Structura ctivity; Vermicompost. |
|
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
|
Marc: |
LEADER 02560naa a2200277 a 4500
001 2110756
005 2019-11-19
008 2019 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1016/j.jaap.2019.104634$2DOI
100 1 $aAQUINO, A. M. de
245 $aEvaluation of molecular properties of humic acids from vermicompost by 13 C CPMAS NMR spectroscopy and thermochemolysis GC MS$h[electronic resource]
260 $c2019
520 $aThe molecular characteristics of different vermicomposts, produced with variable rates of cattle manure and cotton residues, and of related humic acids were determined by 13C-CPMAS NMR and Off-line pyrolysis THM-GC?MS. The analyses highlighted a composition of mature vermicomposts based on differential amounts of lignocellulosic fraction and alkyl compounds inherited from original biomasses, thus revealing a decrease of overall hydrophobic character at increasing amounts of cotton input. The evaluation of molecular parameters derived from both solid state NMR spectra and from the specific biomarkers released by thermochemolysis suggested that the humification process was mainly characterized by the selective preservation of specific lignin derivatives. The potential bioactive properties of humic acids were hence evaluated in a bioassays test on maize seedlings. The humic extracts showed a differential response in root growth-promoting effect, depending on the specific molecular features. The higher bioactivity found in humic components isolated from vermicompost with no or low addition of cotton residues, supported the role of the overall hydrophobic character and of the large content of bioavailable lignin units and nitrogen moieties. These results confirm that the combination of solid state NMR and thermochemolysis are valuable and efficient tools to assess the molecular quality of natural organic matter. The detailed molecular characterization of compost materials may hence represent a useful requirement to select the most suitable application of bulk biomasses and derived fractions for soil organic matter managements.
653 $aCotton residues Humic extracts
653 $aCow manure
653 $aMolecular characterization
653 $aStructura ctivity
653 $aVermicompost
700 1 $aCANELLAS, L. P.
700 1 $aSILVA, A. P. S. da
700 1 $aCANELLAS, N. O.
700 1 $aLIMA, L. da S.
700 1 $aOLIVARES, F. L.
700 1 $aPICCOLO, A.
700 1 $aSPACCINI, R.
773 $tJournal of Analytical and Applied Pyrolysis, v .141, 104634, August 2019.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agrobiologia (CNPAB) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
