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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
11/08/1992 |
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Data da última atualização: |
11/08/1992 |
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Autoria: |
GRAHAM, J. H.; GOTTWALD, T. R. |
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Afiliação: |
IFAS, C. R. and Education Center, 700 Experiment Station Road, Lake Alfred, FL 33850; ARS, Hort. Research Laboratory 2120 Camden Road, Orlando, FL 32803. |
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Título: |
Control measures for citrus bacterial spot in nurseries and packinghouses. |
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Ano de publicação: |
1991 |
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Fonte/Imprenta: |
Proc. Fla. State Hort. Soc. v.104, p.169-173, 1991. |
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Idioma: |
Inglês |
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Conteúdo: |
Citrus bacterial spot (CBS), caused by Xanthomonas campestris pv. citrumelo, produces unsightly blemishes on leaves and stems of nursery plants that may affect their market value. In simulated nurseries, Swingle citrumelo and "Ruby red" grapefruit infected with X.c. citrumelo were treated with combinations of defoliation and sprays of copper ammonium complex (CAC) to control CBS. Also, Swingle citrumelo, budded with "Ruby red" grapefruit, were treated likewise before and after unwrapping the buds. Removal of diseased leaves reduced to a low level but did not eradicate CBS on grapefruit or Swingles citrumelo. Bacteria from stem lesions on Swingle citrumelo infected new leaves. Biweekly CAC sprays reduced the recurrence of leaf infection but did not prevent newdisease except on "Ruby red" grapefruit budlings, where CAC-treated Swingle citrumelo rootstock stems were removed before unwrapping the bud. The effect of disinfestation of personnel and equipament on spread of X. c. citrumelo in a nursery was demonstrated by handling or hedging diseased Swingle citrumelo and following the transmission of the disease to noninfested trees down the row. Rubbing wet, diseased leaves with gloves transmitted CBS to the end of 12 m rows of 44 plants. After contamination, surface treatments of gloves with Gallex 1027 and dilute chlorine bleach reduced the incidence of CBS on individual plants but not the transmission down the row. Hedging of diseased shoots did not transmit CBS. |
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Palavras-Chave: |
citrumelo; defoliacao; tratamento de frutas; Xanthomonas campestris pv. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01999naa a2200181 a 4500
001 1632539
005 1992-08-11
008 1991 bl uuuu u00u1 u #d
100 1 $aGRAHAM, J. H.
245 $aControl measures for citrus bacterial spot in nurseries and packinghouses.
260 $c1991
520 $aCitrus bacterial spot (CBS), caused by Xanthomonas campestris pv. citrumelo, produces unsightly blemishes on leaves and stems of nursery plants that may affect their market value. In simulated nurseries, Swingle citrumelo and "Ruby red" grapefruit infected with X.c. citrumelo were treated with combinations of defoliation and sprays of copper ammonium complex (CAC) to control CBS. Also, Swingle citrumelo, budded with "Ruby red" grapefruit, were treated likewise before and after unwrapping the buds. Removal of diseased leaves reduced to a low level but did not eradicate CBS on grapefruit or Swingles citrumelo. Bacteria from stem lesions on Swingle citrumelo infected new leaves. Biweekly CAC sprays reduced the recurrence of leaf infection but did not prevent newdisease except on "Ruby red" grapefruit budlings, where CAC-treated Swingle citrumelo rootstock stems were removed before unwrapping the bud. The effect of disinfestation of personnel and equipament on spread of X. c. citrumelo in a nursery was demonstrated by handling or hedging diseased Swingle citrumelo and following the transmission of the disease to noninfested trees down the row. Rubbing wet, diseased leaves with gloves transmitted CBS to the end of 12 m rows of 44 plants. After contamination, surface treatments of gloves with Gallex 1027 and dilute chlorine bleach reduced the incidence of CBS on individual plants but not the transmission down the row. Hedging of diseased shoots did not transmit CBS.
653 $acitrumelo
653 $adefoliacao
653 $atratamento de frutas
653 $aXanthomonas campestris pv
700 1 $aGOTTWALD, T. R.
773 $tProc. Fla. State Hort. Soc.$gv.104, p.169-173, 1991.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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