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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
09/08/1995 |
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Data da última atualização: |
05/04/2017 |
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Autoria: |
KALMBACHER, R. S.; BOOTE, K. J.; MARTIN, F. G. |
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Título: |
Burning and 2,4,5-T application on mortality and carbohydrate reserves in saw-palmetto. |
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Ano de publicação: |
1983 |
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Fonte/Imprenta: |
Journal of Range Management, v.36, n.1, p.9-12, 1983. |
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Idioma: |
Inglês |
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Conteúdo: |
On the flatwoods of the southeastern United States control of saw-palmetto (Serenoa repens (Bart.) Small) is an important step in the improvement of native pastures. This study, conducted at the Ona Agricultural Research Center in south Florida, measured fluctuations in total available carbohydrates (TAC) in rhizomes of burned and unburned saw-palmetto which received a june or October applications of 8.9 kg/ha (acid equiv.) of 2,4,5-T. Palmetto kill, change in palmetto cover and grass canopy were evaluated. Burning reduced TAC concentrations in rhizomes from 48.8% in March to 14.3% in July as compared to a drop from 47.2% to 37.4% for unburned plants. Applying 2,4,5-T caused a further significant decline in TAC concentrations. Both burning and 2,4,5-T resulted in lower rhizome percent dry matter indicating that treatments stress caused metabolism of crbohydrate which was replaced by water. After 1 year there was higher mortality on palmetto receiving 2,4,5-T in June, but after 2 years there was no difference in mortality between June (48%) and October sprayed (39%) plants. Burning was found to have a significant effects on mortality of sprayed plants. Burning and 2,4,5-T decrease palmetto cover, and burned plants treated with 2,4,5-T in June had less cover than burned plants treated in October with 2,4,5-T. Burning followed by 2,4,5-T application in June increased grass cover from 29.4% at the beginning of the study to 67.5% at the end. |
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Palavras-Chave: |
Native pasture. |
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Thesagro: |
Pastagem Nativa; Queimada. |
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Thesaurus Nal: |
burning. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01999naa a2200193 a 4500
001 1785387
005 2017-04-05
008 1983 bl --- 0-- u #d
100 1 $aKALMBACHER, R. S.
245 $aBurning and 2,4,5-T application on mortality and carbohydrate reserves in saw-palmetto.
260 $c1983
520 $aOn the flatwoods of the southeastern United States control of saw-palmetto (Serenoa repens (Bart.) Small) is an important step in the improvement of native pastures. This study, conducted at the Ona Agricultural Research Center in south Florida, measured fluctuations in total available carbohydrates (TAC) in rhizomes of burned and unburned saw-palmetto which received a june or October applications of 8.9 kg/ha (acid equiv.) of 2,4,5-T. Palmetto kill, change in palmetto cover and grass canopy were evaluated. Burning reduced TAC concentrations in rhizomes from 48.8% in March to 14.3% in July as compared to a drop from 47.2% to 37.4% for unburned plants. Applying 2,4,5-T caused a further significant decline in TAC concentrations. Both burning and 2,4,5-T resulted in lower rhizome percent dry matter indicating that treatments stress caused metabolism of crbohydrate which was replaced by water. After 1 year there was higher mortality on palmetto receiving 2,4,5-T in June, but after 2 years there was no difference in mortality between June (48%) and October sprayed (39%) plants. Burning was found to have a significant effects on mortality of sprayed plants. Burning and 2,4,5-T decrease palmetto cover, and burned plants treated with 2,4,5-T in June had less cover than burned plants treated in October with 2,4,5-T. Burning followed by 2,4,5-T application in June increased grass cover from 29.4% at the beginning of the study to 67.5% at the end.
650 $aburning
650 $aPastagem Nativa
650 $aQueimada
653 $aNative pasture
700 1 $aBOOTE, K. J.
700 1 $aMARTIN, F. G.
773 $tJournal of Range Management$gv.36, n.1, p.9-12, 1983.
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Registro original: |
Embrapa Pantanal (CPAP) |
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| 14. |  | CAMPOS, Z. M. da S. Os jacarés movem em grupos? Corumbá: Embrapa Pantanal, 2004. 2 p. (Embrapa Pantanal. Artigo de Divulgação na Mídia, 60). Formato eletrônico.| Tipo: Artigo de Divulgação na Mídia |
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