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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
13/09/2011 |
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Data da última atualização: |
22/07/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
ALVES, A. C.; OLIVEIRA, P. P. A.; HERLING, V. R.; TREVELIN, P. C.; LUZ, P. H. DE C.; ALVES, T. C.; ROCHETTI, R. C.; BARIONI JUNIOR, W. |
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Afiliação: |
ANA CAROLINA ALVES, UEMS; PATRICIA PERONDI ANCHAO OLIVEIRA, CPPSE; VALDO RODRIGUES HERLING, USP-FZEA; PAULO CESAR OCHEUZE TREVELIN, USP-CENA; PEDRO HENRIQUE DE CERQUEIRA LUZ, USP-FZEA; TERESA CRISTINA ALVES, CPPSE; RAMON CELLIN ROCHETTI, UNESP/ILHA SOLTEIRA; WALDOMIRO BARIONI JUNIOR, CPPSE. |
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Título: |
New methods to quantify NH3 volatilization from fertilized surface soil with urea. |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, v. 35, p. 133-140, 2011. |
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DOI: |
https://doi.org/10.1590/S0100-06832011000100012 |
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Idioma: |
Português |
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Conteúdo: |
Gaseous N losses from soil are considerable, resulting mostly from ammonia volatilization linked to agricultural activities such as pasture fertilization. The use of simple and accessible measurement methods of such losses is fundamental in the evaluation of the N cycle in agricultural systems. The purpose of this study was to evaluate quantification methods of NH3 volatilization from fertilized surface soil with urea, with minimal influence on the volatilization processes. The greenhouse experiment was arranged in a completely randomized design with 13 treatments and five replications, with the following treatments: (1) Polyurethane foam (density 20 kg m-3) with phosphoric acid solution absorber (foam absorber), installed 1, 5, 10 and 20 cm above the soil surface; (2) Paper filter with sulfuric acid solution absorber (paper absorber, 1, 5, 10 and 20 cm above the soil surface); (3) Sulfuric acid solution absorber (1, 5 and 10 cm above the soil surface); (4) Semiopen static collector; (5) 15N balance (control). The foam absorber placed 1 cm above the soil surface estimated the real daily rate of loss and accumulated loss of NH3?N and proved efficient in capturing NH3 volatized from urea-treated soil. The estimates based on acid absorbers 1, 5 and 10 cm above the soil surface and paper absorbers 1 and 5 cm above the soil surface were only realistic for accumulated NNH3 losses. Foam absorbers can be indicated to quantify accumulated and daily rates of NH3 volatilization losses similarly to an open static chamber, making calibration equations or correction factors unnecessary. MenosGaseous N losses from soil are considerable, resulting mostly from ammonia volatilization linked to agricultural activities such as pasture fertilization. The use of simple and accessible measurement methods of such losses is fundamental in the evaluation of the N cycle in agricultural systems. The purpose of this study was to evaluate quantification methods of NH3 volatilization from fertilized surface soil with urea, with minimal influence on the volatilization processes. The greenhouse experiment was arranged in a completely randomized design with 13 treatments and five replications, with the following treatments: (1) Polyurethane foam (density 20 kg m-3) with phosphoric acid solution absorber (foam absorber), installed 1, 5, 10 and 20 cm above the soil surface; (2) Paper filter with sulfuric acid solution absorber (paper absorber, 1, 5, 10 and 20 cm above the soil surface); (3) Sulfuric acid solution absorber (1, 5 and 10 cm above the soil surface); (4) Semiopen static collector; (5) 15N balance (control). The foam absorber placed 1 cm above the soil surface estimated the real daily rate of loss and accumulated loss of NH3?N and proved efficient in capturing NH3 volatized from urea-treated soil. The estimates based on acid absorbers 1, 5 and 10 cm above the soil surface and paper absorbers 1 and 5 cm above the soil surface were only realistic for accumulated NNH3 losses. Foam absorbers can be indicated to quantify accumulated and daily rates of NH3 volatilization losses ... Mostrar Tudo |
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Palavras-Chave: |
15 N; Ammonia absorber; Fertilizer N; NH3 N loss. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/41947/1/PROCI2011.00102.pdf
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Marc: |
LEADER 02397naa a2200265 a 4500
001 1900319
005 2022-07-22
008 2011 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1590/S0100-06832011000100012$2DOI
100 1 $aALVES, A. C.
245 $aNew methods to quantify NH3 volatilization from fertilized surface soil with urea.$h[electronic resource]
260 $c2011
520 $aGaseous N losses from soil are considerable, resulting mostly from ammonia volatilization linked to agricultural activities such as pasture fertilization. The use of simple and accessible measurement methods of such losses is fundamental in the evaluation of the N cycle in agricultural systems. The purpose of this study was to evaluate quantification methods of NH3 volatilization from fertilized surface soil with urea, with minimal influence on the volatilization processes. The greenhouse experiment was arranged in a completely randomized design with 13 treatments and five replications, with the following treatments: (1) Polyurethane foam (density 20 kg m-3) with phosphoric acid solution absorber (foam absorber), installed 1, 5, 10 and 20 cm above the soil surface; (2) Paper filter with sulfuric acid solution absorber (paper absorber, 1, 5, 10 and 20 cm above the soil surface); (3) Sulfuric acid solution absorber (1, 5 and 10 cm above the soil surface); (4) Semiopen static collector; (5) 15N balance (control). The foam absorber placed 1 cm above the soil surface estimated the real daily rate of loss and accumulated loss of NH3?N and proved efficient in capturing NH3 volatized from urea-treated soil. The estimates based on acid absorbers 1, 5 and 10 cm above the soil surface and paper absorbers 1 and 5 cm above the soil surface were only realistic for accumulated NNH3 losses. Foam absorbers can be indicated to quantify accumulated and daily rates of NH3 volatilization losses similarly to an open static chamber, making calibration equations or correction factors unnecessary.
653 $a15 N
653 $aAmmonia absorber
653 $aFertilizer N
653 $aNH3 N loss
700 1 $aOLIVEIRA, P. P. A.
700 1 $aHERLING, V. R.
700 1 $aTREVELIN, P. C.
700 1 $aLUZ, P. H. DE C.
700 1 $aALVES, T. C.
700 1 $aROCHETTI, R. C.
700 1 $aBARIONI JUNIOR, W.
773 $tRevista Brasileira de Ciência do Solo$gv. 35, p. 133-140, 2011.
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
19/08/2021 |
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Data da última atualização: |
03/01/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
PINHEIRO, D. H.; VALICENTE, F. H. |
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Afiliação: |
DANIELE HELOÍSA PINHEIRO; FERNANDO HERCOS VALICENTE, CNPMS. |
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Título: |
Identification of Bacillus thuringiensis strains for the management of lepidopteran pests. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Neotropical Entomology, v. 50, p. 804-811, 2021. |
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DOI: |
https://doi.org/10.1007/s13744-021-00896-w |
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Idioma: |
Inglês |
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Conteúdo: |
Bacillus thuringiensis (Bt)-based bioinsecticides and transgenic plants expressing proteins with insecticidal activity (Cry and Vip) have been successfully used in several integrated pest management programs worldwide. Lepidoptera comprise some of the most economically important insect pests of the major agricultural crops. In this study, the toxicity of 150 Btstrains was evaluated against Helicoverpa armigera (Hübner) larvae. Eight strains (426, 520B, 1636, 1641, 1644, 1648, 1657 and 1658) showed high insecticide activity against H. armigera and were therefore tested against Anticarsia gemmatalis (Hübner), Spodoptera cosmioides (Walker), Chrysodeixis includens (Walker), and Diatraea saccharalis (Fabricius) larvae. Our results showed that most of the Bt strains were also toxic to these lepidopteran species. The biochemical and molecular analyses of these strains revealed that they had a similar protein profile; however, their cry and vip gene contents were variable. In addition, the median lethal concentration (LC50) of the selected strains indicated that the strains 1636, 1641, and 1658 were the most effective against H. armigera, showing LC50 values of 185.02, 159.44, and 192.98 ng/cm2 , respectively. Our results suggest that the selected Bt strains have great potential to control the lepidopteran pests H. armigera, A. gemmatalis, D. saccharalis, S. cosmioides, and C. includes. |
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Palavras-Chave: |
Bioinsecticide; Bioinseticida. |
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Thesagro: |
Bactéria; Controle Biológico; Gene; Inseto; Praga de Planta. |
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Thesaurus NAL: |
Entomopathogenic bacteria; Insects; Pest control. |
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Categoria do assunto: |
S Ciências Biológicas |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/226309/1/Identification-Bacillus-thuringiensis.pdf
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Marc: |
LEADER 02182naa a2200265 a 4500
001 2133747
005 2022-01-03
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s13744-021-00896-w$2DOI
100 1 $aPINHEIRO, D. H.
245 $aIdentification of Bacillus thuringiensis strains for the management of lepidopteran pests.$h[electronic resource]
260 $c2021
520 $aBacillus thuringiensis (Bt)-based bioinsecticides and transgenic plants expressing proteins with insecticidal activity (Cry and Vip) have been successfully used in several integrated pest management programs worldwide. Lepidoptera comprise some of the most economically important insect pests of the major agricultural crops. In this study, the toxicity of 150 Btstrains was evaluated against Helicoverpa armigera (Hübner) larvae. Eight strains (426, 520B, 1636, 1641, 1644, 1648, 1657 and 1658) showed high insecticide activity against H. armigera and were therefore tested against Anticarsia gemmatalis (Hübner), Spodoptera cosmioides (Walker), Chrysodeixis includens (Walker), and Diatraea saccharalis (Fabricius) larvae. Our results showed that most of the Bt strains were also toxic to these lepidopteran species. The biochemical and molecular analyses of these strains revealed that they had a similar protein profile; however, their cry and vip gene contents were variable. In addition, the median lethal concentration (LC50) of the selected strains indicated that the strains 1636, 1641, and 1658 were the most effective against H. armigera, showing LC50 values of 185.02, 159.44, and 192.98 ng/cm2 , respectively. Our results suggest that the selected Bt strains have great potential to control the lepidopteran pests H. armigera, A. gemmatalis, D. saccharalis, S. cosmioides, and C. includes.
650 $aEntomopathogenic bacteria
650 $aInsects
650 $aPest control
650 $aBactéria
650 $aControle Biológico
650 $aGene
650 $aInseto
650 $aPraga de Planta
653 $aBioinsecticide
653 $aBioinseticida
700 1 $aVALICENTE, F. H.
773 $tNeotropical Entomology$gv. 50, p. 804-811, 2021.
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Embrapa Milho e Sorgo (CNPMS) |
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