| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Meio Ambiente. |
|
Data corrente: |
16/10/2017 |
|
Data da última atualização: |
16/10/2017 |
|
Tipo da produção científica: |
Artigo em Anais de Congresso |
|
Autoria: |
SPADOTTO, C. A.; HORNSBY, A. G.; GOMES, M. A. F. |
|
Afiliação: |
CLAUDIO APARECIDO SPADOTTO, SGTE; UNIVERSITY OF FLORIDA/USA; MARCO ANTONIO FERREIRA GOMES, CNPMA. |
|
Título: |
Sorption and leaching potential of acidic herbicides in brazilian soils. |
|
Ano de publicação: |
2004 |
|
Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DA CIÊNCIA DAS PLANTAS DANINHAS, 24., 2004, São Pedro. Anais... Londrina: SBCPD, 2004. 2p. Resumos Expandidos n. 175. 1 CD-ROM. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Leaching potentials of three acidic herbicides were assessed for three different Brazilian soils, by means of the multi-layered AFi model. Values of AFi were also calculated for each herbicide using a modified model (AFi*), where sorption coefficient (Kd) values are pH-dependent. The pH-dependent Kd values estimated for all three herbicides were always higher than pH-independent Kd values calculated using average Koc data. The pHdependent Kd values for the three herbicides evidenced a large variation from layer to layer following changes in OC and pH for the different soil depths. When OC decreases, Kd tends to decrease; on the other hand, lowering pH tends to increase Kd. For all three soils, OC and pH exhibit an overall decrease with depth. Despite differences between the pH-independent Kd and the pH-dependent Kd values, the AFi values for 2,4-D, calculated by the original multilayered-soil model and by the modified model (AFi*), were similarly low for all three soils, mostly due to the short half-life of 2,4-D. The pH-dependent AFi values for flumetsulam were always much lower than values calculated by the original multi-layered model. Therefore, the pH-independent model appears to overestimate leaching potential of flumetsulam. The AFi values for sulfentrazone calculated by the original and the modified models were similarly high for all three soils, despite the differences in Kd values. The long half-life of sulfentrazone mostly contributed to the similar high values of AFi for the three different soils. Overall AFi values showed large differences for sulfentrazone when calculated by the original and by the modified model (AFi*), owing to its high AF value for each layer. Thus, the original AFi model would seem to markedly overestimate the leaching potential for sulfentrazone, as well as for flumetsulam for these soil conditions MenosLeaching potentials of three acidic herbicides were assessed for three different Brazilian soils, by means of the multi-layered AFi model. Values of AFi were also calculated for each herbicide using a modified model (AFi*), where sorption coefficient (Kd) values are pH-dependent. The pH-dependent Kd values estimated for all three herbicides were always higher than pH-independent Kd values calculated using average Koc data. The pHdependent Kd values for the three herbicides evidenced a large variation from layer to layer following changes in OC and pH for the different soil depths. When OC decreases, Kd tends to decrease; on the other hand, lowering pH tends to increase Kd. For all three soils, OC and pH exhibit an overall decrease with depth. Despite differences between the pH-independent Kd and the pH-dependent Kd values, the AFi values for 2,4-D, calculated by the original multilayered-soil model and by the modified model (AFi*), were similarly low for all three soils, mostly due to the short half-life of 2,4-D. The pH-dependent AFi values for flumetsulam were always much lower than values calculated by the original multi-layered model. Therefore, the pH-independent model appears to overestimate leaching potential of flumetsulam. The AFi values for sulfentrazone calculated by the original and the modified models were similarly high for all three soils, despite the differences in Kd values. The long half-life of sulfentrazone mostly contributed to the similar high values of... Mostrar Tudo |
|
Palavras-Chave: |
Modelo multi-camadas. |
|
Thesagro: |
Ph. |
|
Thesaurus Nal: |
flumetsulam; sulfentrazone. |
|
Categoria do assunto: |
-- |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/165137/1/2004SP-67-Spadotto-Soption-15701.pdf
|
|
Marc: |
LEADER 02502nam a2200181 a 4500
001 2077454
005 2017-10-16
008 2004 bl uuuu u00u1 u #d
100 1 $aSPADOTTO, C. A.
245 $aSorption and leaching potential of acidic herbicides in brazilian soils.$h[electronic resource]
260 $aIn: CONGRESSO BRASILEIRO DA CIÊNCIA DAS PLANTAS DANINHAS, 24., 2004, São Pedro. Anais... Londrina: SBCPD, 2004. 2p. Resumos Expandidos n. 175. 1 CD-ROM.$c2004
520 $aLeaching potentials of three acidic herbicides were assessed for three different Brazilian soils, by means of the multi-layered AFi model. Values of AFi were also calculated for each herbicide using a modified model (AFi*), where sorption coefficient (Kd) values are pH-dependent. The pH-dependent Kd values estimated for all three herbicides were always higher than pH-independent Kd values calculated using average Koc data. The pHdependent Kd values for the three herbicides evidenced a large variation from layer to layer following changes in OC and pH for the different soil depths. When OC decreases, Kd tends to decrease; on the other hand, lowering pH tends to increase Kd. For all three soils, OC and pH exhibit an overall decrease with depth. Despite differences between the pH-independent Kd and the pH-dependent Kd values, the AFi values for 2,4-D, calculated by the original multilayered-soil model and by the modified model (AFi*), were similarly low for all three soils, mostly due to the short half-life of 2,4-D. The pH-dependent AFi values for flumetsulam were always much lower than values calculated by the original multi-layered model. Therefore, the pH-independent model appears to overestimate leaching potential of flumetsulam. The AFi values for sulfentrazone calculated by the original and the modified models were similarly high for all three soils, despite the differences in Kd values. The long half-life of sulfentrazone mostly contributed to the similar high values of AFi for the three different soils. Overall AFi values showed large differences for sulfentrazone when calculated by the original and by the modified model (AFi*), owing to its high AF value for each layer. Thus, the original AFi model would seem to markedly overestimate the leaching potential for sulfentrazone, as well as for flumetsulam for these soil conditions
650 $aflumetsulam
650 $asulfentrazone
650 $aPh
653 $aModelo multi-camadas
700 1 $aHORNSBY, A. G.
700 1 $aGOMES, M. A. F.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Meio Ambiente (CNPMA) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
Registro Completo
|
Biblioteca(s): |
Embrapa Arroz e Feijão. |
|
Data corrente: |
27/01/2010 |
|
Data da última atualização: |
06/07/2022 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
B - 5 |
|
Autoria: |
WENDLAND, A.; ALENCAR, N. E.; MELO, L. C.; COSTA, J. G. C.; DEL PELOSO, M. J.; PEREIRA, H. S.; FARIA, L. C. de; FERREIRA, E. P. de B.; CÔRTES, M. V. C. B. |
|
Afiliação: |
ADRIANE WENDLAND, CNPAF; NARA EDREIRA ALENCAR, UFG; LEONARDO CUNHA MELO, CNPAF; JOAQUIM GERALDO CAPRIO DA COSTA, CNPAF; MARIA JOSE DEL PELOSO, CNPAF; HELTON SANTOS PEREIRA, CNPAF; LUIS CLAUDIO DE FARIA, CNPAF; ENDERSON PETRONIO DE BRITO FERREIRA, CNPAF; MARCIO VINICIUS DE C BARROS CORTES, CNPAF. |
|
Título: |
Symptom pattern of common bean genotypes inoculated with different isolates of Curtobacterium flaccumfaciens pv. flaccumfaciens. |
|
Ano de publicação: |
2009 |
|
Fonte/Imprenta: |
Annual Report of the Bean Improvement Cooperative, v. 52, p. 70-71, 2009. |
|
Idioma: |
Inglês |
|
Conteúdo: |
The aim of this study was to evaluate the disease progress and difference in plant growth of two common bean genotypes considered resistant (Ouro Branco) and susceptible (LMRs 11997) to the bacterial wilt, and the differential interaction between isolates. |
|
Thesagro: |
Doença de planta; Feijão; Phaseolus vulgaris. |
|
Thesaurus NAL: |
Curtobacterium flaccumfaciens. |
|
Categoria do assunto: |
H Saúde e Patologia |
|
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/30727/1/BIC200907.pdf
|
|
Marc: |
LEADER 01082naa a2200265 a 4500
001 1631309
005 2022-07-06
008 2009 bl uuuu u00u1 u #d
100 1 $aWENDLAND, A.
245 $aSymptom pattern of common bean genotypes inoculated with different isolates of Curtobacterium flaccumfaciens pv. flaccumfaciens.
260 $c2009
520 $aThe aim of this study was to evaluate the disease progress and difference in plant growth of two common bean genotypes considered resistant (Ouro Branco) and susceptible (LMRs 11997) to the bacterial wilt, and the differential interaction between isolates.
650 $aCurtobacterium flaccumfaciens
650 $aDoença de planta
650 $aFeijão
650 $aPhaseolus vulgaris
700 1 $aALENCAR, N. E.
700 1 $aMELO, L. C.
700 1 $aCOSTA, J. G. C.
700 1 $aDEL PELOSO, M. J.
700 1 $aPEREIRA, H. S.
700 1 $aFARIA, L. C. de
700 1 $aFERREIRA, E. P. de B.
700 1 $aCÔRTES, M. V. C. B.
773 $tAnnual Report of the Bean Improvement Cooperative$gv. 52, p. 70-71, 2009.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
