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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
10/11/1993 |
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Data da última atualização: |
22/04/2025 |
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Autoria: |
FENG, J. C.; REYNOLDS, P.; TESKEY, K. |
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Título: |
Persistence, mobility and degradation of hexazinone in silt loam soils in the Peace River area, British Columbia. |
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Ano de publicação: |
1986 |
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Fonte/Imprenta: |
FPMI File Report 76. |
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Páginas: |
17 p. |
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Idioma: |
Inglês |
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Conteúdo: |
A white spruce plantation near Stewart Lake, Peace River area, British Columbia was treated with hexazinone, 3-cyclohexyl-6-(dimethylamino)-l-raethyl-l,3,5-triazine-2,4(lH,3H)-dione, at 4.3 kg ai/ha by a helicopter equipped with a MICROFOIL® boom. Soils from within, and at 20 and 40 m (5-10% gradient) outside of the treatment block were moni tored for 104 days after treatment for residues of hexazinone and its metabolites A, 3-(4-hydroxycyclohexyl)-6-(dimethylamino)-l-raethyl-l,3,5- triazine-2,4(lH,3H)-dione and B, 3-cyclohexyl-6-(methylamino)-l-methyll,3,5-triazine-2,4(lH,3H)-dione. Soil samples, subdivided into surface organic, and 0-15 cm and 15-30 cm mineral layers, were collected before and at 0, 9, 23, 55, 70, 104 days after application. Hexazinone degrad ation was rapid, decreasing from 7.12 yg/g (9 days) to 2.09 y g/g (104 days). Metabolite A and B concentrations (30-50% and 0-12% that of hex azinone, respectively) indicated higher hydroxylation than demethylation activity in this silt loam soil. Leaching of hexazinone from the sur face organic to the underlying 0-15 cm mineral soil layer was found only in the 55-day sample. No residues were detected for other sampling dates in this mineral layer and the layer below (15-30 cm). No positive evidence of lateral movement was found in samples from 20 m and 40 ra outside of the treated block |
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Palavras-Chave: |
Análise residual; Forest; Mobilidade. |
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Thesagro: |
Árvore Conífera; Cromatografia Gasosa; Herbicida; Persistência de Pesticida; Solo. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 02068naa a2200253 a 4500
001 1279873
005 2025-04-22
008 1986 bl uuuu u00u1 u #d
100 1 $aFENG, J. C.
245 $aPersistence, mobility and degradation of hexazinone in silt loam soils in the Peace River area, British Columbia.$h[electronic resource]
260 $c1986
300 $a17 p.
520 $aA white spruce plantation near Stewart Lake, Peace River area, British Columbia was treated with hexazinone, 3-cyclohexyl-6-(dimethylamino)-l-raethyl-l,3,5-triazine-2,4(lH,3H)-dione, at 4.3 kg ai/ha by a helicopter equipped with a MICROFOIL® boom. Soils from within, and at 20 and 40 m (5-10% gradient) outside of the treatment block were moni tored for 104 days after treatment for residues of hexazinone and its metabolites A, 3-(4-hydroxycyclohexyl)-6-(dimethylamino)-l-raethyl-l,3,5- triazine-2,4(lH,3H)-dione and B, 3-cyclohexyl-6-(methylamino)-l-methyll,3,5-triazine-2,4(lH,3H)-dione. Soil samples, subdivided into surface organic, and 0-15 cm and 15-30 cm mineral layers, were collected before and at 0, 9, 23, 55, 70, 104 days after application. Hexazinone degrad ation was rapid, decreasing from 7.12 yg/g (9 days) to 2.09 y g/g (104 days). Metabolite A and B concentrations (30-50% and 0-12% that of hex azinone, respectively) indicated higher hydroxylation than demethylation activity in this silt loam soil. Leaching of hexazinone from the sur face organic to the underlying 0-15 cm mineral soil layer was found only in the 55-day sample. No residues were detected for other sampling dates in this mineral layer and the layer below (15-30 cm). No positive evidence of lateral movement was found in samples from 20 m and 40 ra outside of the treated block
650 $aÁrvore Conífera
650 $aCromatografia Gasosa
650 $aHerbicida
650 $aPersistência de Pesticida
650 $aSolo
653 $aAnálise residual
653 $aForest
653 $aMobilidade
700 1 $aREYNOLDS, P.
700 1 $aTESKEY, K.
773 $tFPMI File Report 76.
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| Registros recuperados : 4 | |
| 3. |  | CIPRIANI, H. N.; VIEIRA, A. H.; PASSOS, A. M. A. dos; MORAES, K. S.; ALMEIDA, A. L. C.; REIS, M. C. dos. Initial growth of eucalypt clones in different spacings within strips. In: WORLD CONGRESS ON INTEGRATED CROP-LIVESTOCK-FOREST SYSTEMS; INTERNATIONAL SYMPOSIUM ON INTEGRATED CROP-LIVESTOCK SYSTEMS, 3., 2015, Brasília, DF. Towards sustainable intensification: proceedings. Brasília, DF: Embrapa, 2015.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Rondônia. |
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| 4. | | ALMEIDA, A. L. C.; MORAES, K. S.; CIPRIANI, H. N.; PASSOS, A. M. A. dos; CRUZ, P. G. da; SALMAN, A. K. D.; VARGAS, L. Relationship between the light intensity and the distance from eucalyptus strips in pasture. In: WORLD CONGRESS ON INTEGRATED CROP-LIVESTOCK-FOREST SYSTEMS; INTERNATIONAL SYMPOSIUM ON INTEGRATED CROP-LIVESTOCK SYSTEMS, 3., 2015, Brasília, DF. Towards sustainable intensification: proceedings. Brasília, DF: Embrapa, 2015.| Tipo: Artigo em Anais de Congresso |
| Biblioteca(s): Embrapa Rondônia. |
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| Registros recuperados : 4 | |
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