An Integrated Approach to Control the Black Leaf Streak Disease (BLSD) of Bananas, while Reducing Fungicide Use and Environmental Impact

Ganry, Jacky; Fouré, Eric; Bellaire, Luc De Lapeyre de; Lescot, Thierry

doi:10.5772/29794

Cited by 13 publications

(20 citation statements)

References 20 publications

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“…Since the 70s this forecasting system has allowed good control of both diseases through 5-8 (Sigatoka disease, in the French West indies) to 10-15 annual applications (Black Leaf Streak Disease, in Ecuador, Cameroon and Ivory Coast), when 30 to 60 systematic sprays are carried out in most Latin American countries [20]. 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].…”

Section: Introductionmentioning

confidence: 99%

“…The "Stage of Evolution of Disease" (SED) represents the rate of disease development, which reflects the climatic conditions, and the intensity of the infection [20]. It relies on the early detection of the first disease symptoms on the youngest banana leaves (ranks 1 to 4).…”

Section: Data Collectionmentioning

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%

“…A warning system developed for the control of Sigatoka disease (SD, due to M. musicola) has been adapted for BLSD [17][18][19][20]. This strategy aims to optimize control of the disease, with minimum fungicide applications, which would result in a lower cost of control, lower risk of fungicide resistance and lower environmental negative impact.…”

Section: Introductionmentioning

confidence: 99%

“…This strategy aims to optimize control of the disease, with minimum fungicide applications, which would result in a lower cost of control, lower risk of fungicide resistance and lower environmental negative impact. The forecasting system relies on several key factors such as (i) early disease detection, (ii) fast aerial spraying, (iii) a strong curative effect through the use of systemic fungicides in 15 L⋅ha -1 of mineral oil, (iv) fungicide resistance management, and (v) centralization and generalization of control over the whole banana-producing area [3,20].…”

Section: Introductionmentioning

confidence: 99%

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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

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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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Section: Introductionmentioning

confidence: 99%

Section: Data Collectionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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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

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The Genomes of Mycosphaerella graminicola and M. fijiensis

Goodwin

Kema

2014

Genomics of Plant-Associated Fungi: Monocot Pathogens

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The arbuscular mycorrhiza fungusRhizophagus irregularisMUCL 41833 decreases disease severity of Black Sigatoka on banana c.v. Grande naine, underin vitroculture conditions

Anda

Boulois

Declerck

2015

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Introduction. Mycosphaerella fijiensis, the fungal pathogen causing Black Sigatoka disease, attacks almost all cultivars of bananas and plantains. Currently, the repeated application of fungicides is the most widespread control measure, while the use of bio-control agents remains almost ignored. Here we investigated, under in vitro culture conditions, whether an arbuscular mycorrhizal fungus (AMF-Rhizophagus irregularis MUCL 41833) could reduce the severity of disease caused by M. fijiensis MUCL 47740 on banana. Materials and methods. Prior to their transfer to autotrophic in vitro culture systems and subsequent inoculation by the pathogen, the banana plantlets cultivar Grande Naine (AAA genome Cavendish group) were grown in the extra-radical mycelium network of the AMF, arising from Medicago truncatula plantlets, for fungal root colonization. Results and discussion. At the time of infection with M. fijiensis, the AMF colonization of the banana plantlets was 12%, 56% and 10% for hyphae, arbuscules and spores/vesicles, respectively, and the number of spores produced in the medium was above 200. At day 21 and day 35 following infection by the pathogen, the number of extra-radical spores as well as the abundance of arbuscules in roots, were significantly higher than in the non-infected plantlets. Conversely, the severity index measured in the mycorrhizal plantlets decreased by more than 80% and 60%, respectively, 21 and 35 days after infection by the pathogen. Similarly, the area under disease progress curve, estimated at day 35, was reduced by 59% in the mycorrhizal banana plantlets as compared to the control plantlets. Whatever the treatment (mycorrhizal or non mycorrhizal plantlets in presence/absence of M. fijiensis), no significant differences were observed in plantlet dry weight, pseudostem height and diameter, and leaf area at both observation times. Conclusions. These results emphasize the complex multitrophic interactions between above and below-ground microorganisms mediated via the plant. They further suggest that AMF may decrease, at least at the early stage of infection, M. fijiensis symptoms possibly via the induction of a systemic resistance pathway. The important decrease in symptoms observed in the mycorrhizal banana plantlets suggest that these microorganisms may represent a potentially attractive option to consider in the context of an integrated control of this important disease. Keywords: banana / Musa accuminata / vesicular arbuscular mycorrhizae / Mycosphaerella fijiensis / Rhizophagus irregularis / disease control method / in vitro culture Résumé-Le champignon mycorhizien à arbuscules Rhizophagus irregularis MUCL 41833 décroît la sévérité de la maladie des raies noires chez le bananier c.v. Grande naine en conditions de culture in vitro. Introduction. Mycosphaerella fijiensis, le champignon responsable de la maladie des raies noires, s'attaque à la grande majorité des cultivars de bananiers et plantains. À l'heure actuelle, l'application répétée de fongicides est la principale mesure de contr...

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An Integrated Approach to Control the Black Leaf Streak Disease (BLSD) of Bananas, while Reducing Fungicide Use and Environmental Impact

Cited by 13 publications

References 20 publications

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

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

The Genomes of Mycosphaerella graminicola and M. fijiensis

The arbuscular mycorrhiza fungusRhizophagus irregularisMUCL 41833 decreases disease severity of Black Sigatoka on banana c.v. Grande naine, underin vitroculture conditions

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