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Registro Completo |
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
17/11/1995 |
Data da última atualização: |
28/10/2004 |
Autoria: |
MOSCARDI, F.; VILLAS BOAS, G. L. |
Afiliação: |
EMBRAPA-CNPSo. Londrina, PR. |
Título: |
Influencia da desfolha artificial, em quatro diferentes estadios fenologicos da planta, sobre o rendimento e outras caracteristicas do girassol. |
Ano de publicação: |
1982 |
Fonte/Imprenta: |
In: EMBRAPA. Centro Nacional de Pesquisa de Soja (Londrina, PR). Resultados de pesquisa de girassol 1982. Londrina, 1982. |
Páginas: |
p.25,27,29-33. |
Idioma: |
Português |
Palavras-Chave: |
Artificial defoliation; Desfolhamento artificial; Hand defoliation; Insect; Sunflower. |
Thesagro: |
Girassol; Inseto. |
Categoria do assunto: |
-- |
Marc: |
LEADER 00747naa a2200217 a 4500 001 1453854 005 2004-10-28 008 1982 bl uuuu u00u1 u #d 100 1 $aMOSCARDI, F. 245 $aInfluencia da desfolha artificial, em quatro diferentes estadios fenologicos da planta, sobre o rendimento e outras caracteristicas do girassol. 260 $c1982 300 $ap.25,27,29-33. 650 $aGirassol 650 $aInseto 653 $aArtificial defoliation 653 $aDesfolhamento artificial 653 $aHand defoliation 653 $aInsect 653 $aSunflower 700 1 $aVILLAS BOAS, G. L. 773 $tIn: EMBRAPA. Centro Nacional de Pesquisa de Soja (Londrina, PR). Resultados de pesquisa de girassol 1982. Londrina, 1982.
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Embrapa Soja (CNPSO) |
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Registro Completo
Biblioteca(s): |
Embrapa Solos. |
Data corrente: |
14/07/2022 |
Data da última atualização: |
23/08/2022 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
B - 1 |
Autoria: |
NOVOTNY, E. H.; BALIEIRO, F. de C.; AUCCAISE, R.; BENITES, V. de M.; COUTINHO, H. L. da C. |
Afiliação: |
ETELVINO HENRIQUE NOVOTNY, CNPS; FABIANO DE CARVALHO BALIEIRO, CNPS; RUBEN AUCCAISE, UEPG; VINICIUS DE MELO BENITES, CNPS; HEITOR LUIZ DA COSTA COUTINHO, CNPS (in memoriam). |
Título: |
Spectroscopic investigation on the effects of biochar and soluble phosphorus on grass clipping vermicomposting. |
Ano de publicação: |
2022 |
Fonte/Imprenta: |
Agriculture, v. 12, n. 7, 1011, 2022. |
DOI: |
https://doi.org/10.3390/agriculture12071011 |
Idioma: |
Inglês |
Conteúdo: |
Seeking to evaluate the hypothesis that biochar optimises the composting and vermicomposting processes as well as their product quality, we carried out field and greenhouse experiments. Four grass clipping composting treatments (only grass, grass + single superphosphate (SSP), grass + biochar and grass + SSP + biochar) were evaluated. At the end of the maturation period (150 days), the composts were submitted to vermicomposting (Eisenia fetida earthworm) for an additional 90 days. Ordinary fine charcoal was selected due to its low cost (a by-product of charcoal production) and great availability; this is important since the obtained product presents low commercial value. A greater maturity of the organic matter (humification) was observed in the vermicompost treatments compared with the compost-only treatments. The addition of phosphate significantly reduced the pH (from 6.7 to 4.8), doubled the electrical conductivity and inhibited biological activity, resulting in less than 2% of the number of earthworms found in the treatment without phosphate. The addition of soluble phosphate inhibited the humification process, resulting in a less-stable compound with the preservation of labile structures, primarily cellulose. The P species found corroborate these findings because the pyrophosphate conversion from SSP in the absence of biochar may explain the strong acidification and increased electric conductivity. Biochar appears to prevent this conversion, thus mitigating the deleterious effects of SSP and favouring the formation of organic P species from SSP (78.5% of P in organic form with biochar compared to only 12.8% in the treatments without biochar). In short, biochar decreases pyrophosphate formation from SSP, avoiding acidification and salinity; therefore, biochar improves the whole composting and vermicomposting process and product quality. Vermicompost with SSP and biochar should be tested as a soil conditioner on account of its greater proportion of stabilized C and organic P. MenosSeeking to evaluate the hypothesis that biochar optimises the composting and vermicomposting processes as well as their product quality, we carried out field and greenhouse experiments. Four grass clipping composting treatments (only grass, grass + single superphosphate (SSP), grass + biochar and grass + SSP + biochar) were evaluated. At the end of the maturation period (150 days), the composts were submitted to vermicomposting (Eisenia fetida earthworm) for an additional 90 days. Ordinary fine charcoal was selected due to its low cost (a by-product of charcoal production) and great availability; this is important since the obtained product presents low commercial value. A greater maturity of the organic matter (humification) was observed in the vermicompost treatments compared with the compost-only treatments. The addition of phosphate significantly reduced the pH (from 6.7 to 4.8), doubled the electrical conductivity and inhibited biological activity, resulting in less than 2% of the number of earthworms found in the treatment without phosphate. The addition of soluble phosphate inhibited the humification process, resulting in a less-stable compound with the preservation of labile structures, primarily cellulose. The P species found corroborate these findings because the pyrophosphate conversion from SSP in the absence of biochar may explain the strong acidification and increased electric conductivity. Biochar appears to prevent this conversion, thus mitigating the deleter... Mostrar Tudo |
Palavras-Chave: |
13C nuclear magnetic resonance; 31P nuclear magnetic resonance; Pyrogenic carbon; Vermicompostagem. |
Thesagro: |
Compostagem. |
Thesaurus NAL: |
Biochar; Charcoal; Eisenia fetida. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1144709/1/Spectroscopic-investigation-on-the-effects-of-biochar-2022.pdf
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Marc: |
LEADER 02879naa a2200277 a 4500 001 2144709 005 2022-08-23 008 2022 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.3390/agriculture12071011$2DOI 100 1 $aNOVOTNY, E. H. 245 $aSpectroscopic investigation on the effects of biochar and soluble phosphorus on grass clipping vermicomposting.$h[electronic resource] 260 $c2022 520 $aSeeking to evaluate the hypothesis that biochar optimises the composting and vermicomposting processes as well as their product quality, we carried out field and greenhouse experiments. Four grass clipping composting treatments (only grass, grass + single superphosphate (SSP), grass + biochar and grass + SSP + biochar) were evaluated. At the end of the maturation period (150 days), the composts were submitted to vermicomposting (Eisenia fetida earthworm) for an additional 90 days. Ordinary fine charcoal was selected due to its low cost (a by-product of charcoal production) and great availability; this is important since the obtained product presents low commercial value. A greater maturity of the organic matter (humification) was observed in the vermicompost treatments compared with the compost-only treatments. The addition of phosphate significantly reduced the pH (from 6.7 to 4.8), doubled the electrical conductivity and inhibited biological activity, resulting in less than 2% of the number of earthworms found in the treatment without phosphate. The addition of soluble phosphate inhibited the humification process, resulting in a less-stable compound with the preservation of labile structures, primarily cellulose. The P species found corroborate these findings because the pyrophosphate conversion from SSP in the absence of biochar may explain the strong acidification and increased electric conductivity. Biochar appears to prevent this conversion, thus mitigating the deleterious effects of SSP and favouring the formation of organic P species from SSP (78.5% of P in organic form with biochar compared to only 12.8% in the treatments without biochar). In short, biochar decreases pyrophosphate formation from SSP, avoiding acidification and salinity; therefore, biochar improves the whole composting and vermicomposting process and product quality. Vermicompost with SSP and biochar should be tested as a soil conditioner on account of its greater proportion of stabilized C and organic P. 650 $aBiochar 650 $aCharcoal 650 $aEisenia fetida 650 $aCompostagem 653 $a13C nuclear magnetic resonance 653 $a31P nuclear magnetic resonance 653 $aPyrogenic carbon 653 $aVermicompostagem 700 1 $aBALIEIRO, F. de C. 700 1 $aAUCCAISE, R. 700 1 $aBENITES, V. de M. 700 1 $aCOUTINHO, H. L. da C. 773 $tAgriculture$gv. 12, n. 7, 1011, 2022.
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