Is Chemical Control of Mycosphaerella Foliar Diseases of Banana Sustainable?

Bellaire, Luc De Lapeyre de; Ngando, Josué Essoh; Abadie, Catherine; Chabrier, Christian; Blanco, Rosario Álvarez; Lescot, Thierry; Carlier, Jean; Côte, François-Xavier

doi:10.17660/actahortic.2009.828.16

Cited by 24 publications

(23 citation statements)

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“…Today, fungicide resistance to benzimidazole and to strobilurins is widespread in the Latin American banana-exporting countries [40]. A similar evolution has been observed in Cameroon where systemic fungicides have been applied in a forecasting strategy [33], although this evolution has been delayed (more than 10 years) in comparison with other areas where systemic fungicides have been used in systematic frameworks. However, fungicide resistance is still not established in some banana plantations of Ivory Coast where systemic fungicides have been used in a forecasting strategy for more than 10 years (de Lapeyre de Bellaire, unpubl.…”

Section: Blsd Causes Increasing Difficulties For Controlmentioning

confidence: 81%

“…A significant shift in the sensitivity to DMI fungicides was also reported in Costa Rica after these fungicides had been used for more than 7 years [39]. After the emergence of resistance, first in a localized area, resistant strains progressively diffuse in most of the banana plantations of the same country [33,38]. Today, fungicide resistance to benzimidazole and to strobilurins is widespread in the Latin American banana-exporting countries [40].…”

Section: Blsd Causes Increasing Difficulties For Controlmentioning

confidence: 95%

“…Nevertheless, the development of fungicide resistance led to the progressive abandoning of this rational strategy at the expense of systematic use of contact fungicides that must be applied every week (40-50 applications per year). In all these countries, this evolution has led to a significant increase in the cost of disease control [33] but, above all, to an increase in negative environmental effects. In systematic strategies, 30-40 kg active ingredient·ha -1 ·year -1 are applied versus 2-4 kg a.i.·ha -1 ·year -1 in the forecasting strategy.…”

Section: Blsd Causes Increasing Difficulties For Controlmentioning

confidence: 99%

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Black Leaf Streak Disease is challenging the banana industry

Bellaire¹,

Fouré²,

Abadie³

et al. 2010

Fruits

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-Introduction. Black Leaf Streak Disease (BLSD) is regarded as the most economically important threat that the banana industry has to face. Effectively, this foliar disease affects leaf photosynthesis but, above all, reduces the greenlife of fruits, that cannot be exported in cases of severe infestation. Main characteristics of Black Leaf Streak Disease. More than 20 Mycosphaerella species have been described on bananas. Leaf spot diseases of bananas are caused by some species of this complex, of which M. fijiensis (BLSD) and M. musicola (Sigatoka disease) are the most important. M. fijiensis is an invasive species that has totally replaced M. musicola in most banana-exporting countries, which was conducive to increasing difficulties in banana leaf spot control. BLSD causes increasing difficulties for control. Since all banana cultivars grown in the banana industry are highly susceptible to BLSD, the control of this disease relies on aerial applications of fungicides according to either systematic frameworks (mostly contact fungicides) or forecasting strategies (mostly systemic fungicides). In a banana-exporting country where M. fijiensis has been reported, BLSD control becomes increasingly more difficult. This evolution is essentially due to the rapid emergence of fungicide resistance, and is conducive to a significant increase in the cost of disease control but, above all, to increasing negative environmental effects. Challenges for the banana industry. Because of the rapid adaptation of M. fijiensis, the banana industry must be prepared for significant evolution. We propose various parameters that should be monitored at different levels (disease assessment parameters, evaluation of chemical control efficiency, global evaluation of BLSD economic incidence) to rationalize such evolution. The modelization of BLSD effects on bunch mass and greenlife should enable defining acceptable disease thresholds and optimizing bunch weight and harvest stage according to agronomic practices. On the other hand, fungicide use is conducive to significant environmental impact and must be limited. Forecasting strategies should be used wherever systemic fungicides are still efficient. Finally, the predominance of a unique type of susceptible cultivar is unsustainable and the recourse to resistant varieties in an integrated strategy is undoubtedly the future of BLSD control.France / Musa / disease control / fungal diseases / Mycosphaerella fijiensis / resistance to chemicals La Maladie des Raies Noires défie l'industrie de la banane.Résumé -Introduction. La Maladie des Raies Noires (MRN) est la plus grande menace à laquelle est confrontée l'industrie de la banane. En effet, cette maladie foliaire affecte la photosynthèse des bananiers mais, surtout, elle entraine une réduction du potentiel de conservation des fruits qui ne peuvent être exportés lorsque les bananiers sont sévèrement atteints. Principales caractéristiques de la MRN. Plus de 20 espèces du genre Mycosphaerella ont été décrites sur le bananier, mais les cercosp...

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Section: Blsd Causes Increasing Difficulties For Controlmentioning

confidence: 81%

Section: Blsd Causes Increasing Difficulties For Controlmentioning

confidence: 95%

Section: Blsd Causes Increasing Difficulties For Controlmentioning

confidence: 99%

See 1 more Smart Citation

Black Leaf Streak Disease is challenging the banana industry

Bellaire¹,

Fouré²,

Abadie³

et al. 2010

Fruits

View full text Add to dashboard Cite

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“…This was confirmed by the applications carried out in Palo Amarillo and Guayacanes, especially using Reflect. Furthermore, availability of antimitotic products usable in oil should also be investigated in Dominican Republic, since fungal populations of this country remain susceptible to this group of fungicides, which is known as an efficient tool for BLSD control [21].…”

Section: Influence Of Fungicide Resistancementioning

confidence: 99%

“…However, the regular and intensive use of systemic fungicides has, in some situations, led to the emergence of resistant strains in M. fijiensis populations [20,21]. Consequently, as in Cameroon, the control has progressively shifted to a systematic fungicide application of contact fungicides (more than 40 applications per year), showing that this strategy must be adapted to local conditions in order to ensure its sustainability [21].…”

Section: Introductionmentioning

confidence: 99%

Adaptation of the forecasting system to control Black Leaf Streak Disease of banana in the specific conditions of Dominican Republic

Guillermet¹,

Guen²,

Fouré³

et al. 2014

Fruits

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-Introduction. Black Leaf Streak Disease (BLSD) is the most important foliar disease affecting banana production worldwide. A forecasting system has been developed and implemented in various countries aiming at optimal control of BLSD through minimum applications of fungicide. In Dominican Republic, favorable dry climatic conditions contrast with serious organizational issues for BLSD control. Our objective was to evaluate the adaptation of this forecasting strategy in these specific conditions. Materials and methods. Fungicide resistance analyses were carried out in the northwestern region of Dominican Republic, in order to determine the appropriate spectrum of systemic fungicides for the forecasting strategy. Three field experiments were set up on commercial farms where disease evolution was monitored every week, on reference plots, in order to decide the pertinence of fungicide applications. Results. Fungicide resistance to QoI fungicides and strong sensitivity reduction to DMI (Demethylation Inhibitor) fungicides were detected in all farms. In spite of these limitations in the use of some fungicide groups, disease control was achieved with a limited number of fungicide applications (6-9), as compared with 13-26 applications in most commercial farms of Dominican Republic over the same period. Discussion. The calculation of an indicator of the efficiency of the chemical control confirmed the potential of the forecasting strategy, underlining the influence of crop management as well as the neighboring environment of the farms on its efficiency. The requirements for further generalization of this system to commercial farms of this country are discussed. Dominican Republic / Musa / plant disease control / Mycosphaerella fijiensis / forecastingAdaptation du système d'avertissement biologique de la maladie des raies noires dans les conditions spécifiques de la République dominicaine.Résumé -Introduction. La Maladie des Raies Noires (MRN) est la maladie foliaire la plus importante affectant la production bananière à travers le monde. Un système d'avertissement biologique a été développé et mis en place dans plusieurs pays visant à un contrôle optimal de la MRN avec un nombre minimal d'applications de fongicides. En République dominicaine, les conditions climatiques sèches sont favorables au contrôle de la maladie, mais contrastent avec des lacunes organisationnelles importantes. Notre objectif a été d'évaluer l'adaptation de la stratégie d'avertissement dans ces conditions spécifiques. Matériel et méthodes. Des analyses de résistance aux fongicides ont été menées dans la région Nord Ouest du pays afin de déterminer la gamme de fongicides appropriée pour l'avertissement. Trois expérimentations ont été menées sur des plantations commerciales avec un suivi hebdomadaire de l'évolution de la maladie, sur des postes de référence, afin de décider de la pertinence de la réalisation d'un traitement. Résultats. Une résistance aux fongicides de type QoI et une forte réduction de la sensibilité aux DMI (Demethylation I...

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