home    about    browse    search    latest    help 
Login | Create Account

Regulation of black rot (Diplodia seriata) in organic apple production (BIOFRUITNET Practice Abstract)

{Tool} Regulation of black rot (Diplodia seriata) in organic apple production (BIOFRUITNET Practice Abstract). Creator(s): Adolphi, Christina and Oeser, Niklas. Issuing Organisation(s): FÖKO - Fördergemeinschaft Ökologischer Obstbau. Biofruitnet Practice Abstract, no. 064. (2022)

[thumbnail of Regulation of black rot (Diplodia seriata) in organic apple production] PDF - Published Version - English (Regulation of black rot (Diplodia seriata) in organic apple production)
[thumbnail of Regulierung der Schwarzen Sommerfäule im ökologischen Apfelanbau] PDF - Published Version - German/Deutsch (Regulierung der Schwarzen Sommerfäule im ökologischen Apfelanbau)

Document available online at: https://orgprints.org/44725


Removal of fruit mummies also has a preventive or infestation-reducing effect against the storage rot pathogens Neofabraea alba and N. perennans.
Practical recommendation
•Due to their tendency to form fruit mummies (Picture 4), some apple varieties are especially at risk of black rot infestation. These include Gerlinde, Elstar, Dalinbel, Natyra, Ingrid Marie and Wellant
• Infections are favoured by high temperatures (20-26°C) and prolonged rain events
• Heavy rainfall causes spores to be washed out of the fruit mummies, which then cause infection on the young fruit via the lenticels
• Choose robust varieties
• Look for infection hint on fruits and leaves:
o First infections may become visible from the beginning of June
o Leaf spots ("frog eyes") may appear on the leaves near infested shoots or fruit mummies (Picture 1), and black necrotic infestations form on the fruit (Picture 2), which later grow to the size of a pinhead and develop a red edge
o From August onwards, the outbreak of brown rot can occur from these primary infections as shown in (Picture 3).
• Pick out fruit mummies consistently each year by hand before sprouting (February/March)

EPrint Type:Practice tool
What problem does the tool address?:Black rot (Diplodia seriata) occurs mainly in organically managed crops as fruit rot in the pre-harvest period.
What solution does the tool offer?:The causal agent of black rot overwinters on the fruit mummies (unformed fruit) remaining on the tree. Picking out the mummies in winter reduces the infestation by D. seriata significantly.
Type of Practice Tool:Practice abstracts
Keywords:Prevention, Plant protection, Disease control
Agrovoc keywords:
plant protection
plant disease control
Subjects: Crop husbandry > Production systems > Fruit and berries
Crop husbandry > Crop health, quality, protection
Research affiliation: European Union > Horizon 2020 > Biofruitnet
Germany > Fördergemeinschaft Ökologischer Obstbau - FÖKO
Horizon Europe or H2020 Grant Agreement Number:862850
Related Links:https://organic-farmknowledge.org/tool/44725, https://biofruitnet.eu
Project ID:ofk
Deposited By: Basler, Andreas
ID Code:44725
Deposited On:09 Dec 2022 17:25
Last Modified:22 Aug 2023 05:44
Document Language:English, German/Deutsch

Repository Staff Only: item control page