Progresso da mancha-bacteriana do pimentão a partir de diferentes níveis iniciais de inóculo e do emprego ou não do controle com oxicloreto de cobre

Carmo, Margarida Goréte Ferreira do; Macagnan, Dirceu; Carvalho, Aldir de O. de

doi:10.1590/s0102-05362001000300011

Cited by 17 publications

(10 citation statements)

References 10 publications

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“…In contrast, the experiments of Carmo et al (2001) resulted in variable levels of control of bacterial spot on pepper using copper oxychloride.…”

Section: Discussionmentioning

confidence: 95%

Control of Bacterial Spot of Tomato and Activation of Enzymes Related to Resistance by Chemicals Under Field Conditions

Itako¹,

Júnior²,

Demant³

et al. 2014

JAS

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The control of tomato bacterial spot by the application of chemicals was evaluated on field condition during two trials. Thirty days after transplanting and every 14 days the tomato plants PA-529 hybrid were sprayed with acibenzolar-S-methyl (2.5 g·100) and water (control), totaling five applications during the crop cycle. Forty days after transplanting, the plants were inoculated with a Xanthomonas perforans isolate (10 7 UFC·mL -1 ), disease severity was assessed (10, 19, 29, and 36 days after inoculation), and the area under the disease progress curve was calculated. All chemicals controlled the disease, but better results for total mass and number of fruit was obtained for fluazinam, pyraclostrobin, pyraclostrobin + metiram, copper oxychloride, and mancozeb + copper oxychloride in the first trial, and pyraclostrobin and pyraclostrobin + metiram in the second trial. The average fruit weight, °Brix, pH and total acidity were not affected by the application of the chemicals. The enzymatic activity of the polyphenol oxidase and peroxidase was higher in the first trial, but in the second, only the polyphenoloxidase had the highest activity in the treatments with acibenzolar-S-methyl, pyraclostrobin, and pyraclostrobin + metiram on tomato leaves. Products containing pyraclostrobin increased the activity of some enzymes without reducing the productivity.

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“…In contrast, the experiments of Carmo et al (2001) resulted in variable levels of control of bacterial spot on pepper using copper oxychloride.…”

Section: Discussionmentioning

confidence: 95%

Control of Bacterial Spot of Tomato and Activation of Enzymes Related to Resistance by Chemicals Under Field Conditions

Itako¹,

Júnior²,

Demant³

et al. 2014

JAS

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“…O aumento da área foliar deve-se tanto à redução das infecções devido à sua ação bacteriostática (Deleito, 2002), quanto à redução da taxa de desfolha. Esta doença caracteriza-se por promover a abscisão prematura de folhas infectadas (Carmo et al, 2001), reduzindo a área foliar das plantas. Isto pode ser confirmado pela análise de correlação efetuada para os dados coletados no Ação do biofertilizante Agrobio sobre a mancha-bacteriana e desenvolvimento de mudas de pimentão ensaio com 'Cascadura Itaipu' onde se constatou correlação negativa e significativa entre a incidência da doença com a altura das plantas (r=-0,87), com o peso da matéria seca da parte aérea (r=-0,80) e com a área foliar (r=-0,87).…”

Section: Resultsunclassified

Ação do biofertilizante Agrobio sobre a mancha-bacteriana e desenvolvimento de mudas de pimentão

et al. 2005

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“…Spread capacity 3.5.5.1. Role of seed Long-distance dissemination of xanthomonads causing bacterial spot disease is ensured by means of contaminated seeds in trade Kendrik, 1921, 1923;Bashan et al, 1982;Moffett and Croft, 1983;Sijam et al, 1991;Carmo et al, 2001). Black et al (2001) reported that farmers saved tomato seeds that often were more contaminated than commercial tomato seeds.…”

Section: Selection For Resistant Varietiesmentioning

confidence: 99%

Scientific Opinion on the pest categorisation of Xanthomonas campestris pv. vesicatoria (Doidge) Dye

Rossi¹

2014

EFS2

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The European Commission requested the EFSA Panel on Plant Health to perform the pest categorisation for Xanthomonas campestris pv. vesicatoria, which is the causal agent of bacterial spot of tomato and pepper. X. campestris pv. vesicatoria is not a single taxonomic entity, and four separate species have been described: X. vesicatoria, X. euvesicatoria, X. perforans and X. gardneri. These organisms can be accurately identified based on a range of discriminative methods. Detection methods are available for seeds. Among the four species described within X. campestris pv. vesicatoria, all except X. gardneri were reported to be present in the EU territory. The host plants (tomato and pepper) are cultivated throughout Europe and conditions are conducive to disease development in open fields in southern Europe and in greenhouses. The disease causes a range of symptoms on aerial parts of plants including fruits. Contaminated seeds and transplants are responsible for longdistance dissemination of the pathogen. Control is mainly based on prevention and exclusion. Extraction of seeds from fruit debris using fermentation and acid treatments and thermotherapy treatments were shown to be effective in reducing the bacterial load in seed lots. No methods and chemical control agents are available that effectively control xanthomonads in infected crops. Although no recent data are available on economic losses caused by these pathogens in the EU, the organisms are considered important bacterial pathogens of tomato and pepper. Infections resulting in up to 30 % losses have been reported. Xanthomonads causing bacterial spot of tomato and pepper meet all criteria defined in International Standard for Phytosanitary Measures (ISPM) 21 and they also meet all ISPM 11 criteria, although X. vesicatoria, X. euvesicatoria and X. perforans are present in the EU territory. After consideration of the evidence, the Panel reached the following conclusions:

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Progresso da mancha-bacteriana do pimentão a partir de diferentes níveis iniciais de inóculo e do emprego ou não do controle com oxicloreto de cobre

Cited by 17 publications

References 10 publications

Control of Bacterial Spot of Tomato and Activation of Enzymes Related to Resistance by Chemicals Under Field Conditions

Control of Bacterial Spot of Tomato and Activation of Enzymes Related to Resistance by Chemicals Under Field Conditions

Ação do biofertilizante Agrobio sobre a mancha-bacteriana e desenvolvimento de mudas de pimentão

Scientific Opinion on the pest categorisation of Xanthomonas campestris pv. vesicatoria (Doidge) Dye

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