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Biological control against the new invasive Mealy-bug Delottococcus aberiae (BIOFRUITNET Practice Abstract)

{Tool} Biological control against the new invasive Mealy-bug Delottococcus aberiae (BIOFRUITNET Practice Abstract). Creator(s): Vercher Aznar, Rosa. Issuing Organisation(s): Ecovalia - Asociación Valor Ecológico. Biofruitnet Practice Abstract, no. 092. (2022)

[thumbnail of Biological control against the new invasive Mealy-bug Delottococcus aberiae] PDF - Published Version - English (Biological control against the new invasive Mealy-bug Delottococcus aberiae)
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[thumbnail of Control biológico contra la nueva cochinilla invasora Delottococcus aberiae] PDF - Published Version - Spanish/Español (Control biológico contra la nueva cochinilla invasora Delottococcus aberiae)
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Document available online at: https://orgprints.org/44998


Summary in the original language of the document

Combining several measures with those enhancing natural predators can effectively reduce the population year after year.
Practical recommendation
• The pest is present all year round, but the most critical time to control is from the fruit set until it reaches two centimetres (April to June), when the fruit is no longer susceptible to deformation.
• D. aberiae adult females lay eggs on the ground and on trunks in spring, after which the newly emerged nymphs return to the tree canopy. Males and females of a soil-dwelling mite, Gaeolaelaps (Hypoaspis) aculeifer (Picture 2), prey on the first instar nymphs of D. aberiae mealybugs. Therefore, enhance the presence of this soil predatory mite by adding compost or mulching. The presence of ground cover can also enhance the presence of these predatory mites.
• Release Cryptolaemus montrouzieri on the citrus canopy of the predator (Picture 1) from March onwards and at the larval stage (dose of 3/10 per tree, representing 1200-4000 adults/ha), to reduce pest levels at the time of maximum fruit sensitivity. Releasing adults in summer (Picture 3) at a dose of 3/10 per tree reduces the wintering population and, therefore, the levels of the following year.
• On-farm rearing of C. montrouzieri is carried out on potato sprouts filled with Planococcus citri.


EPrint Type:Practice tool
What problem does the tool address?:Delottococcus aberiae is an invasive South African mealybug that affects fruits and leads to substantial crop losses. There are no effective natural enemies in the native fauna, so controlling this pest in organic farming is difficult.
What solution does the tool offer?:Solutions are mainly cultural practices to enhance soil predators, such as Gaeolaelaps (Hypoaspis) aculeifer and the release of the predator Cryptolaemus montrouzieri. This predator can be bred by the farmers with the help and advice of local advisory services.
Country:Spain
Type of Practice Tool:Practice abstracts
Keywords:Citrus, Plant protection, Pest control, Biological control, Natural enemies
Agrovoc keywords:
Language
Value
URI
English
Citrus
http://aims.fao.org/aos/agrovoc/c_1637
English
plant protection
http://aims.fao.org/aos/agrovoc/c_5978
English
pest control
http://aims.fao.org/aos/agrovoc/c_5726
English
biological control
http://aims.fao.org/aos/agrovoc/c_918
English
natural enemies
http://aims.fao.org/aos/agrovoc/c_5085
Subjects: Crop husbandry > Production systems > Fruit and berries
Crop husbandry > Crop health, quality, protection
Research affiliation: European Union > Horizon 2020 > Biofruitnet
Spain > Other organizations Spain
European Union > Organic Farm Knowledge
Horizon Europe or H2020 Grant Agreement Number:862850
Related Links:https://organic-farmknowledge.org/tool/44998, https://biofruitnet.eu, https://organic-farmknowledge.org/tool/44866
Project ID:ofk
Deposited By: Basler, Andreas
ID Code:44998
Deposited On:24 Dec 2022 15:06
Last Modified:02 May 2024 10:32
Document Language:English, Spanish/Español
Status:Published

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