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Registro Completo |
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Biblioteca(s): |
Embrapa Algodão. |
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Data corrente: |
24/10/2007 |
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Data da última atualização: |
24/10/2007 |
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Tipo da produção científica: |
Comunicado Técnico/Recomendações Técnicas |
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Autoria: |
AZEVEDO, D. M. P. de. |
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Título: |
Cultivares vs densidade de plantio de algodoeiro no Sodoeste do estado da Bahia. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Campina Grande: Embrapa Algodão, 2005. |
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Páginas: |
4 p. |
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Série: |
(Comunicado Técnico, 246) |
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ISSN: |
0102-0099 |
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Idioma: |
Português |
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Palavras-Chave: |
Brasil; Cultivares de algodão; Palntio de algodão; Sudoeste da Bahia. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPA/19690/1/COMTEC246.pdf
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Marc: |
LEADER 00533nam a2200181 a 4500
001 1275948
005 2007-10-24
008 2005 bl uuuu u0uu1 u #d
022 $a0102-0099
100 1 $aAZEVEDO, D. M. P. de
245 $aCultivares vs densidade de plantio de algodoeiro no Sodoeste do estado da Bahia.
260 $aCampina Grande: Embrapa Algodão$c2005
300 $a4 p.
490 $a(Comunicado Técnico, 246)
653 $aBrasil
653 $aCultivares de algodão
653 $aPalntio de algodão
653 $aSudoeste da Bahia
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Registro original: |
Embrapa Algodão (CNPA) |
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Biblioteca |
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Registro Completo
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
24/03/2020 |
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Data da última atualização: |
25/03/2020 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
C - 0 |
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Autoria: |
CARVALHO, T. A. de; PUGA, A. P.; PIRES, A. M. M.; LIGO, M. A. V.; ANDRADE, C. A. de. |
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Afiliação: |
THAÍS ALVES DE CARVALHO, FATEC; ALINE PEREGRINA PUGA, FAPESP; ADRIANA MARLENE MORENO PIRES, CNPMA; MARCOS ANTONIO VIEIRA LIGO, CNPMA; CRISTIANO ALBERTO DE ANDRADE, CNPMA. |
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Título: |
Residual effect of nitrogen fertilizers formulated with biochar. |
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Ano de publicação: |
2019 |
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Fonte/Imprenta: |
Horticulture International Journal, v. 3, n. 6, p. 315-318, 2019. |
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DOI: |
https://doi.org/10.15406/hij.2019.03.00147 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract: Biochar-based nitrogen fertilizers provide productivity and efficiency of nitrogen use gains, but knowledge is scarce about the residual effect for subsequent crops. We evaluated the residual effect of biochar-based nitrogen fertilizers formulated with urea and charcoal fines residues from the coal manufacturing process for the supply of the Brazilian steel park. The treatments tested were related to the residual effect of 80 kg Nha-1 applied via side dressing in an experiment with corn cultivation under field conditions. After corn harvesting, soil samples from the 0-15 cm layer were collected from each experimental plot, respecting the treatments represented by the following sources of N, besides the control: ammonium nitrate, urea and three biochar-based fertilizers r (F51/10, F40/17, and F29/20). The soil was placed in pots (3L) and fertilized with macronutrients (except N) and micronutrients. The test plant was black oats (Avena strigosa Schreb) and three shoot cuts of the plants were performed during 84 days of experimentation. The initial levels of inorganic N in soil, dry mass produced (shoot and root) and N content absorbed by black oats were analyzed.The initial concentrations of inorganic N in the soil were similar among nitrogen sources. Some highlight is the higher NO3- concentration for ammonium nitrate, as a result of the low efficiency of N use by corn in the field stage. Plant dry mass and N content confirmed the greatest residual effect for ammonium nitrate, for the above reason, combined with zero loss of NH3 in the field. The residual effect of F51/10 (biochar-based nitrogen fertilizer with 51% biochar and 10% N) was higher than that observed for urea when considering the N content absorbed by oats. The superiority of the F51/10 was credited to the slower N release of this fertilizer, as the losses of NH3 from biochar-based fertilizers were as large or greater than determined for urea.Biochar-based nitrogen fertilizer formulated with urea has a longer residual effect compared to the exclusive application of urea and this effect is related to the slow N release, which demonstrates the potential of this technology in the formulation of enhanced-efficiencyN fertilizers. MenosAbstract: Biochar-based nitrogen fertilizers provide productivity and efficiency of nitrogen use gains, but knowledge is scarce about the residual effect for subsequent crops. We evaluated the residual effect of biochar-based nitrogen fertilizers formulated with urea and charcoal fines residues from the coal manufacturing process for the supply of the Brazilian steel park. The treatments tested were related to the residual effect of 80 kg Nha-1 applied via side dressing in an experiment with corn cultivation under field conditions. After corn harvesting, soil samples from the 0-15 cm layer were collected from each experimental plot, respecting the treatments represented by the following sources of N, besides the control: ammonium nitrate, urea and three biochar-based fertilizers r (F51/10, F40/17, and F29/20). The soil was placed in pots (3L) and fertilized with macronutrients (except N) and micronutrients. The test plant was black oats (Avena strigosa Schreb) and three shoot cuts of the plants were performed during 84 days of experimentation. The initial levels of inorganic N in soil, dry mass produced (shoot and root) and N content absorbed by black oats were analyzed.The initial concentrations of inorganic N in the soil were similar among nitrogen sources. Some highlight is the higher NO3- concentration for ammonium nitrate, as a result of the low efficiency of N use by corn in the field stage. Plant dry mass and N content confirmed the greatest residual effect for ammoni... Mostrar Tudo |
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Palavras-Chave: |
Biochar-based fertilizer; Black oat; Enhanced-efficiency fertilizer. |
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Thesagro: |
Fertilidade do Solo; Uréia. |
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Thesaurus NAL: |
Biochar; Soil fertility; Urea. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/211987/1/Pires-residual-effect-2019.pdf
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Marc: |
LEADER 03054naa a2200277 a 4500
001 2121343
005 2020-03-25
008 2019 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.15406/hij.2019.03.00147$2DOI
100 1 $aCARVALHO, T. A. de
245 $aResidual effect of nitrogen fertilizers formulated with biochar.$h[electronic resource]
260 $c2019
520 $aAbstract: Biochar-based nitrogen fertilizers provide productivity and efficiency of nitrogen use gains, but knowledge is scarce about the residual effect for subsequent crops. We evaluated the residual effect of biochar-based nitrogen fertilizers formulated with urea and charcoal fines residues from the coal manufacturing process for the supply of the Brazilian steel park. The treatments tested were related to the residual effect of 80 kg Nha-1 applied via side dressing in an experiment with corn cultivation under field conditions. After corn harvesting, soil samples from the 0-15 cm layer were collected from each experimental plot, respecting the treatments represented by the following sources of N, besides the control: ammonium nitrate, urea and three biochar-based fertilizers r (F51/10, F40/17, and F29/20). The soil was placed in pots (3L) and fertilized with macronutrients (except N) and micronutrients. The test plant was black oats (Avena strigosa Schreb) and three shoot cuts of the plants were performed during 84 days of experimentation. The initial levels of inorganic N in soil, dry mass produced (shoot and root) and N content absorbed by black oats were analyzed.The initial concentrations of inorganic N in the soil were similar among nitrogen sources. Some highlight is the higher NO3- concentration for ammonium nitrate, as a result of the low efficiency of N use by corn in the field stage. Plant dry mass and N content confirmed the greatest residual effect for ammonium nitrate, for the above reason, combined with zero loss of NH3 in the field. The residual effect of F51/10 (biochar-based nitrogen fertilizer with 51% biochar and 10% N) was higher than that observed for urea when considering the N content absorbed by oats. The superiority of the F51/10 was credited to the slower N release of this fertilizer, as the losses of NH3 from biochar-based fertilizers were as large or greater than determined for urea.Biochar-based nitrogen fertilizer formulated with urea has a longer residual effect compared to the exclusive application of urea and this effect is related to the slow N release, which demonstrates the potential of this technology in the formulation of enhanced-efficiencyN fertilizers.
650 $aBiochar
650 $aSoil fertility
650 $aUrea
650 $aFertilidade do Solo
650 $aUréia
653 $aBiochar-based fertilizer
653 $aBlack oat
653 $aEnhanced-efficiency fertilizer
700 1 $aPUGA, A. P.
700 1 $aPIRES, A. M. M.
700 1 $aLIGO, M. A. V.
700 1 $aANDRADE, C. A. de
773 $tHorticulture International Journal$gv. 3, n. 6, p. 315-318, 2019.
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Embrapa Meio Ambiente (CNPMA) |
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