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Explications : La cause de ces dégâts déclarés depuis mars 2023 en Guyane, est en cours
d’identification. La diffusion de pathogènes se fait principalement par contact direct (plants,
matériel, terre infectés) ce qui permet de mettre en place de mesures de prévention dès à
présent.
Intérieur de la tige
de couleur brune
Pourrissement de la
base de la tige
ALERTE :
NOS MANIOCS EN DANGER !
Une nouveau nuisible ravage les cultures de manioc
en Guyane
Feuilles flétries
Les symptômes en photos :
Apex nécrosé
Sources photos : Nathan Astar, Chambre d’Agriculture de
Guyane
Date d’édition : mai 2023
Feuilles sèches, petites
repousses jaunies
contact@fredonguyane.com
06 94 96 25 74
https://fredon.fr/guyane
nathan.astar@guyane.chambagri.fr
06 94 20 75 72
salim-973@guyane.pref.gouv.fr
06 94 21 86 21
en-pmilliettreboux@guyane-
parcnational.fr
06 94 15 11 18
Contacts :
Gestion de la maladie :
ALERTE :
NOS MANIOCS EN DANGER !
Un nouveau nuisible ravage les cultures de manioc
en Guyane
Date d’édition : mai 2023
contact@fredonguyane.com
06 94 96 25 74
https://fredon.fr/guyane
nathan.astar@guyane.chambagri.fr
06 94 20 75 72
salim-973@guyane.pref.gouv.fr
06 94 21 86 21
en-pmilliettreboux@guyane-
parcnational.fr
06 94 15 11 18
Contacts :
3) OUTILS PROPRES :
➢ Désinfecter ses
bottes et ses
outils avec de
l’alcool à 70°
ou de la javel
➢ Ne pas
déplacer de
terre
contaminée
➢ Abandon des
parcelles
contaminées
➢ Destruction par le
feu des plantes
contaminées
1) MATERIEL VEGETAL SAIN :
➢ Bouturer le
« milieu » de
plantes saines
➢ Limiter les
échanges de
matériel
végétal
2) PARCELLES SAINES :
1) MATERIEL VEGETAL SAIN :
➢ Ouvrir de nouveaux
abattis loin de ceux
contaminés
➢ N’allez pas en zone
saine après être allé
en zone contaminée

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Fiche Alerte manioc.pdf

  • 1. Explications : La cause de ces dégâts déclarés depuis mars 2023 en Guyane, est en cours d’identification. La diffusion de pathogènes se fait principalement par contact direct (plants, matériel, terre infectés) ce qui permet de mettre en place de mesures de prévention dès à présent. Intérieur de la tige de couleur brune Pourrissement de la base de la tige ALERTE : NOS MANIOCS EN DANGER ! Une nouveau nuisible ravage les cultures de manioc en Guyane Feuilles flétries Les symptômes en photos : Apex nécrosé Sources photos : Nathan Astar, Chambre d’Agriculture de Guyane Date d’édition : mai 2023 Feuilles sèches, petites repousses jaunies contact@fredonguyane.com 06 94 96 25 74 https://fredon.fr/guyane nathan.astar@guyane.chambagri.fr 06 94 20 75 72 salim-973@guyane.pref.gouv.fr 06 94 21 86 21 en-pmilliettreboux@guyane- parcnational.fr 06 94 15 11 18 Contacts :
  • 2. Gestion de la maladie : ALERTE : NOS MANIOCS EN DANGER ! Un nouveau nuisible ravage les cultures de manioc en Guyane Date d’édition : mai 2023 contact@fredonguyane.com 06 94 96 25 74 https://fredon.fr/guyane nathan.astar@guyane.chambagri.fr 06 94 20 75 72 salim-973@guyane.pref.gouv.fr 06 94 21 86 21 en-pmilliettreboux@guyane- parcnational.fr 06 94 15 11 18 Contacts : 3) OUTILS PROPRES : ➢ Désinfecter ses bottes et ses outils avec de l’alcool à 70° ou de la javel ➢ Ne pas déplacer de terre contaminée ➢ Abandon des parcelles contaminées ➢ Destruction par le feu des plantes contaminées 1) MATERIEL VEGETAL SAIN : ➢ Bouturer le « milieu » de plantes saines ➢ Limiter les échanges de matériel végétal 2) PARCELLES SAINES : 1) MATERIEL VEGETAL SAIN : ➢ Ouvrir de nouveaux abattis loin de ceux contaminés ➢ N’allez pas en zone saine après être allé en zone contaminée