Effects of Sigatoka leaf spot (Mycosphaerella musicola Leach) on fruit yields, field ripening and greenlife of bananas in North Queensland

Ramsey, M. D.; Daniells, J. W.; Anderson, Val Jo

doi:10.1016/0304-4238(90)90111-q

Cited by 42 publications

(29 citation statements)

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“…Additionally, severe SD infections have a marked effect on banana ripening after harvest (Meredith, 1970;Stover, 1972;Wardlaw, 1972). Ramsey et al (1990) found that the GL of bananas harvested at a standard commercial grade from highly infected plants was substantially shortened. Recently, Chillet et al (2009) showed that in the tropical conditions of Guadeloupe, unlike abiotic stresses, SD has a direct effect on the GL of bananas harvested at a constant physiological age.…”

Section: Introductionmentioning

confidence: 99%

“…Heavy infestations of these leaf spot diseases can lead to a considerable reduction in the photosynthetic leaf area of the plant. As a consequence, the bunches and fruits have lower weight in comparison to healthy banana plants (Ramsey et al, 1990). Additionally, severe SD infections have a marked effect on banana ripening after harvest (Meredith, 1970;Stover, 1972;Wardlaw, 1972).…”

Section: Introductionmentioning

confidence: 99%

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Effects of Black Leaf Streak Disease and Sigatoka Disease on fruit quality and maturation process of bananas produced in the subtropical conditions of southern Brazil

et al. 2012

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effects of Black Leaf Streak Disease and Sigatoka Disease on fruit quality and maturation process of bananas produced in the subtropical conditions of southern Brazil

et al. 2012

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“…Cette hypothèse doit être validée dans des conditions contrôlées. À noter que l'impact des stress hydriques ou abiotiques ou d'anoxies racinaires [16][17][18] semble difficilement probable pour expliquer les différences de durée de vie verte constatées entre parcelles d'un même producteur, en raison des similitudes dans les pratiques agricoles et les types de sol rencontrés (sols récents sur cendres). Resumen --Introducción.…”

Section: Discussionunclassified

Variabilité de la durée de vie verte des bananes en conditions réelles de production

Bugaud

Lassoudière

2005

Fruits

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--Introduction. The green shelf life (GSL), which indicates the physiological development of bananas at harvest, is a major quality standard for fruit export. In order to evaluate and to understand the variability of the existing GSL in production, a diagnosis survey was carried out at three banana producers in Martinique using the method of thermal sums as a decision tool for harvest. Materials and methods. For each banana producer, fruits were taken at the exit of the packing station from 10% of the bunches collected during one week. Then, these bananas were preserved at 14 °C in bags made of perforated polyethylene until the "changing green" stage of maturity. The GSL was defined in days by the time passed between the harvest and this stage of maturity. Results and discussion. The GSL varied between (18 and 69) days with an average of 42 days for all of the producers. Nearly 80% of the production had a GSL between (25 and 50) days and less than 4% below 25 days. The variability of the GSL was related mainly to the age of the fruits at harvest, expressed in thermal sums (R = -0.74). This varied between (600 and 1150) degree-days for all of the producers. The fruits contaminated by anthracnose wounds and tip rots presented a shorter GSL than the healthy fruits, and that independently of the harvest stage (p < 0.001). The origin of this contamination was discussed. For the same thermal sum, significant differences in GSL were highlighted according to the location of production (plot) (p < 0.001).Variations of more than 7 days on average were observed between plots from the same producer and located at the same altitude. The origin of these differences was also discussed. Résumé --Introduction. La durée de vie verte (DVV), qui indique l'état physiologique des bananes à la récolte, est un critère de qualité majeur pour l'exportation des fruits. Afin d'évaluer et de comprendre la variabilité de la DVV existant en exploitation, une enquête diagnostic a été menée chez trois producteurs de bananes en Martinique utilisant la méthode des sommes thermiques comme outil de décision de récolte. Matériel et méthodes. Pour chaque producteur, des fruits ont été prélevés en sortie de station d'emballage sur 10 % des régimes récoltés pendant une semaine. Ces bananes ont ensuite été conservées à 14°C dans des sacs perforés en polyéthylène jusqu'au stade de maturité « tournant vert ». La DVV a été définie par le temps écoulé en jour entre la récolte et ce stade de maturité. Résultats et discussion. La DVV a varié entre (18 et 69) jours avec une moyenne de 42 jours pour l'ensemble des producteurs. Près de 80 % de la production a eu une DVV entre (25 et 50) jours et moins de 4 % en dessous de 25 jours. La variabilité de la DVV a été liée principalement à l'âge des fruits à la récolte, exprimée en somme thermique (R = -0,74). Celle-ci a varié entre (600 et 1150) degrés-jour pour l'ensemble des exploitations. Les fruits contaminés par l'anthracnose de blessure et les pourritures de couronne ont présenté une DVV plus courte qu...

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“…The first symptoms are identified as reddish-brown streaks, becoming larger streaks eventually leading to leaf necrosis. In the absence of suitable control, the photosynthetic capacity of leaves is significantly reduced [4], which often results in a yield loss of 20% to 80% [5,6]. However, the most important effect of BLSD is the reduction of fruit greenlife [4,7].…”

Section: Introductionmentioning

confidence: 99%

“…In the absence of suitable control, the photosynthetic capacity of leaves is significantly reduced [4], which often results in a yield loss of 20% to 80% [5,6]. However, the most important effect of BLSD is the reduction of fruit greenlife [4,7]. Effectively, as a climacteric fruit, bananas are harvested still green, at the pre-climacteric stage.…”

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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Effects of Sigatoka leaf spot (Mycosphaerella musicola Leach) on fruit yields, field ripening and greenlife of bananas in North Queensland

Cited by 42 publications

References 1 publication

Effects of Black Leaf Streak Disease and Sigatoka Disease on fruit quality and maturation process of bananas produced in the subtropical conditions of southern Brazil

Effects of Black Leaf Streak Disease and Sigatoka Disease on fruit quality and maturation process of bananas produced in the subtropical conditions of southern Brazil

Variabilité de la durée de vie verte des bananes en conditions réelles de production

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

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