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Registro Completo |
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
15/05/1996 |
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Data da última atualização: |
07/01/2015 |
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Autoria: |
EL-HAMALAWI, Z.A.; MENGE, J. A. |
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Título: |
Effect of wound age and fungicide treatment of wounds on susceptibility of avocado stems to infection by phytophora citricola. |
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Ano de publicação: |
1994 |
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Fonte/Imprenta: |
Plant Disease, v. 78, n. 7, p. 700-704, jul., 1994. |
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Idioma: |
Inglês |
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Conteúdo: |
Bark wounds of avocado (Persea americana) stems of the cultivar Topa Topa became resistant to infection by Phytophthora citricola within 12-14 days after injury. The size of cankers declined significantly as the time interval betwen woundig and inoculation increasead. Wounds that were reinjurede after 2 mo of aging became susceptible to infections similar to those of wounds made on previously unwounded stems. Theseresults suggest that chemical treatment applied to fresh bark wounds must protect against P. citricola for at least 14 days to be effective.Fungicide treatments for curing as well as protecting avocado stems against trunk canker disease caused by P. citicola were investigated. Wounds on intact and excised avocado stems were treated whith fosetyl Al, fosetyl Al+Tree Seal, metalaxyl, Bordeaux mixture, Tree Paint, or Tree Seal after infection with P. citricola. The development of cankers was suppressed only by treatments including fosetyl Al. Wounds wereprotected by fosetyl Al trought the period required for the wound to become resistant to infection. Brief washing of wounds treated with fosetyl Al 24 hr after treatment did not reduce protection of wound site. |
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Palavras-Chave: |
Phitophthora. |
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Thesagro: |
Abacate; Doença Fúngica; Fungicida; Tratamento. |
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Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
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Marc: |
LEADER 01761naa a2200193 a 4500
001 1051083
005 2015-01-07
008 1994 bl --- 0-- u #d
100 1 $aEL-HAMALAWI, Z.A.
245 $aEffect of wound age and fungicide treatment of wounds on susceptibility of avocado stems to infection by phytophora citricola.
260 $c1994
520 $aBark wounds of avocado (Persea americana) stems of the cultivar Topa Topa became resistant to infection by Phytophthora citricola within 12-14 days after injury. The size of cankers declined significantly as the time interval betwen woundig and inoculation increasead. Wounds that were reinjurede after 2 mo of aging became susceptible to infections similar to those of wounds made on previously unwounded stems. Theseresults suggest that chemical treatment applied to fresh bark wounds must protect against P. citricola for at least 14 days to be effective.Fungicide treatments for curing as well as protecting avocado stems against trunk canker disease caused by P. citicola were investigated. Wounds on intact and excised avocado stems were treated whith fosetyl Al, fosetyl Al+Tree Seal, metalaxyl, Bordeaux mixture, Tree Paint, or Tree Seal after infection with P. citricola. The development of cankers was suppressed only by treatments including fosetyl Al. Wounds wereprotected by fosetyl Al trought the period required for the wound to become resistant to infection. Brief washing of wounds treated with fosetyl Al 24 hr after treatment did not reduce protection of wound site.
650 $aAbacate
650 $aDoença Fúngica
650 $aFungicida
650 $aTratamento
653 $aPhitophthora
700 1 $aMENGE, J. A.
773 $tPlant Disease$gv. 78, n. 7, p. 700-704, jul., 1994.
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Embrapa Meio-Norte (CPAMN) |
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