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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
08/10/2007 |
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Data da última atualização: |
25/05/2018 |
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Tipo da produção científica: |
Comunicado Técnico/Recomendações Técnicas |
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Autoria: |
SANTOS, F. G. dos; RODRIGUES, J. A. S.; SCHAFFERT, R. E.; LIMA, J. M. P. de; PITTA, G. V. E.; CASELA, C. R.; FERREIRA, A. da S. |
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Afiliação: |
Fredolino Gaiacomini dos Santos, CNPMS; JOSE AVELINO SANTOS RODRIGUES, CNPMS; ROBERT EUGENE SCHAFFERT, CNPMS; João Maria Pinheiro de Lima, Emparn; Gilson Villaça Exel Pitta, Embrapa Milho e Sorgo; CARLOS ROBERTO CASELA, CNPMS; Alexandre Ferreira da Silva, CNPMS. |
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Título: |
BRS Ponta Negra variedade de sorgo forrageiro. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Sete Lagoas: Embrapa Milho e Sorgo, 2007. |
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Páginas: |
6 p. |
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Série: |
(Embrapa Milho e Sorgo. Comunicado técnico, 145). |
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Idioma: |
Português |
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Thesagro: |
Sorgo; Variedade. |
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Categoria do assunto: |
G Melhoramento Genético |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CNPMS/20082/1/Com_145.pdf
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Marc: |
LEADER 00635nam a2200217 a 4500
001 1474346
005 2018-05-25
008 2007 bl uuuu u0uu1 u #d
100 1 $aSANTOS, F. G. dos
245 $aBRS Ponta Negra variedade de sorgo forrageiro.$h[electronic resource]
260 $aSete Lagoas: Embrapa Milho e Sorgo$c2007
300 $a6 p.
490 $a(Embrapa Milho e Sorgo. Comunicado técnico, 145).
650 $aSorgo
650 $aVariedade
700 1 $aRODRIGUES, J. A. S.
700 1 $aSCHAFFERT, R. E.
700 1 $aLIMA, J. M. P. de
700 1 $aPITTA, G. V. E.
700 1 $aCASELA, C. R.
700 1 $aFERREIRA, A. da S.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Florestas. Para informações adicionais entre em contato com cnpf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
23/09/2008 |
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Data da última atualização: |
23/09/2008 |
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Autoria: |
KUPERMAN, R. G.; SIMINI, M.; PHILLIPS, C. T.; CHECKAI, R. T. |
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Título: |
Baseline toxicity determination for the use of boric acid as reference toxicant in soil invertebrate toxicity testing with light-textured soils. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM. |
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Idioma: |
Inglês |
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Conteúdo: |
A positive chemical control is required in toxicity testing with soil invertebrates to validate the
condition of the test species, and reliability and precision of results. Agricultural pesticides are
recommended by International Standardization Organization (ISO) as positive controls in definitive
toxicity tests with soil invertebrates in standard artificial soils. These reference toxicants include
Carbendazim for earthworms (ISO/11268-2:1998) and enchytraeids (ISO/16387:2005), and
Phenmedipham or Parathion for collembola (ISO/11267:1998). Reference toxicity benchmarks
for these pesticides, established by international ring tests conducted with OECD artificial soil,
cannot be used for validating test results in natural soils or with alternative test species, due to
contrasting chemical toxicities in natural soils, and differences in species-specific sensitivities.
Limited worldwide availability, potential variability in product formulations, and by-product and
contaminant concentrations,, further complicate the use of pesticides as positive controls. We
conducted four individual tests per species with Eisenia fetida and Enchytraeus crypticus,
respectively, plus five tests with Folsomia candida, using boric acid (H3B03) as an alternative
reference toxicant for soil invertebrates. The respective ISO protocols were appropriately adapted
for toxicity testing in natural soil, utilizing Sassafras sandy loam soil [Fine-loamy, siliceous, mesic
Typic Hapludult] having physico-chemical properties (including low pH (4.9), clay (17%), and
organic matter (2.3%), and relatively high sand content (55%)) that supports relatively high
bioavailability of many organic and inorganic chemicals. We analyzed the data for adult survival
in the earthworm test, and production of juveniles in all three tests, using appropriate regression
models to determine the LC50 and EC50 benchmark values (lethal and effective median
concentrations) and the 95% Confidence Limits (CL) associated with the respective point
estimates. These benchmark values were also used to determine minimum?maximum factors,
the geometric and arithmetic means, standard deviations, coefficients of variance, and the upper
and lower warning limits (mean LC50 or EC50 ± 2xSD) for the respective point estimates, and
to prepare Warning Charts for the final assessment of the results of these tests according to
Environment Canada Guideline (EC 2005). Preliminary results indicate that boric acid is an
effective reference toxicant for soil invertebrates in light-textured natural soils. MenosA positive chemical control is required in toxicity testing with soil invertebrates to validate the
condition of the test species, and reliability and precision of results. Agricultural pesticides are
recommended by International Standardization Organization (ISO) as positive controls in definitive
toxicity tests with soil invertebrates in standard artificial soils. These reference toxicants include
Carbendazim for earthworms (ISO/11268-2:1998) and enchytraeids (ISO/16387:2005), and
Phenmedipham or Parathion for collembola (ISO/11267:1998). Reference toxicity benchmarks
for these pesticides, established by international ring tests conducted with OECD artificial soil,
cannot be used for validating test results in natural soils or with alternative test species, due to
contrasting chemical toxicities in natural soils, and differences in species-specific sensitivities.
Limited worldwide availability, potential variability in product formulations, and by-product and
contaminant concentrations,, further complicate the use of pesticides as positive controls. We
conducted four individual tests per species with Eisenia fetida and Enchytraeus crypticus,
respectively, plus five tests with Folsomia candida, using boric acid (H3B03) as an alternative
reference toxicant for soil invertebrates. The respective ISO protocols were appropriately adapted
for toxicity testing in natural soil, utilizing Sassafras sandy loam soil [Fine-loamy, siliceous, mesic
Typic Hapludult] having physico-chemic... Mostrar Tudo |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 03338naa a2200157 a 4500
001 1314921
005 2008-09-23
008 2008 bl uuuu u00u1 u #d
100 1 $aKUPERMAN, R. G.
245 $aBaseline toxicity determination for the use of boric acid as reference toxicant in soil invertebrate toxicity testing with light-textured soils.
260 $c2008
520 $aA positive chemical control is required in toxicity testing with soil invertebrates to validate the condition of the test species, and reliability and precision of results. Agricultural pesticides are recommended by International Standardization Organization (ISO) as positive controls in definitive toxicity tests with soil invertebrates in standard artificial soils. These reference toxicants include Carbendazim for earthworms (ISO/11268-2:1998) and enchytraeids (ISO/16387:2005), and Phenmedipham or Parathion for collembola (ISO/11267:1998). Reference toxicity benchmarks for these pesticides, established by international ring tests conducted with OECD artificial soil, cannot be used for validating test results in natural soils or with alternative test species, due to contrasting chemical toxicities in natural soils, and differences in species-specific sensitivities. Limited worldwide availability, potential variability in product formulations, and by-product and contaminant concentrations,, further complicate the use of pesticides as positive controls. We conducted four individual tests per species with Eisenia fetida and Enchytraeus crypticus, respectively, plus five tests with Folsomia candida, using boric acid (H3B03) as an alternative reference toxicant for soil invertebrates. The respective ISO protocols were appropriately adapted for toxicity testing in natural soil, utilizing Sassafras sandy loam soil [Fine-loamy, siliceous, mesic Typic Hapludult] having physico-chemical properties (including low pH (4.9), clay (17%), and organic matter (2.3%), and relatively high sand content (55%)) that supports relatively high bioavailability of many organic and inorganic chemicals. We analyzed the data for adult survival in the earthworm test, and production of juveniles in all three tests, using appropriate regression models to determine the LC50 and EC50 benchmark values (lethal and effective median concentrations) and the 95% Confidence Limits (CL) associated with the respective point estimates. These benchmark values were also used to determine minimum?maximum factors, the geometric and arithmetic means, standard deviations, coefficients of variance, and the upper and lower warning limits (mean LC50 or EC50 ± 2xSD) for the respective point estimates, and to prepare Warning Charts for the final assessment of the results of these tests according to Environment Canada Guideline (EC 2005). Preliminary results indicate that boric acid is an effective reference toxicant for soil invertebrates in light-textured natural soils.
700 1 $aSIMINI, M.
700 1 $aPHILLIPS, C. T.
700 1 $aCHECKAI, R. T.
773 $tIn: INTERNATIONAL COLLOQUIUM ON SOIL ZOOLOGY, 15; INTERNATIONAL COLLOQUIUM ON APTERYGOTA, 12., 2008, Curitiba. Biodiversity, conservation and sustainabele management of soil animal: abstracts. Colombo: Embrapa Florestas. Editors: George Gardner Brown; Klaus Dieter Sautter; Renato Marques; Amarildo Pasini. 1 CD-ROM.
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