Virus
Carrot Red Leaf Virus
Virus Crlv
Pathogen:
Virus
Type:
Risk to the plant:
HIGH
DESCRIPTION
WHO CAUSES IT?
The CRLV Virus (Carrot Red Leaf Virus) is a pathogen that mainly affects carrots. This virus belongs to the Polerovirus genus within the Luteoviridae family. CRLV is transmitted by aphids (aphids), which act as vectors. The infection process begins when aphids feed on an infected plant and acquire the virus, which then replicates in the insect's body. When aphids move to and feed on healthy plants, they introduce the virus into the plant tissue, where it multiplies and spreads through the phloem, causing the characteristic symptoms of the disease. The virus can survive in alternative host plants and insect vectors, allowing its perpetuation and dispersal over time.
SYMPTOMS
The disease caused by Carrot Red Leaf Virus in carrots is highly damaging and can cause significant losses in crop yield. The infection causes reddish discoloration of the leaves, decreased growth and deformation of the roots. Additionally, infected plants may show stunted development and a notable reduction in root quality and size, directly affecting their commercial value.
- Reddish discoloration on the leaves
- Decreased growth
- Root deformation
- Stunted development
- Reduction in the quality and size of the roots
TEMPERATURE AND HUMIDITY
15°C - 25°C
60% - 80%
HOW IS IT SPREAD?
Insect vectors (aphids), Alternative host plants, Infected plant material, Contaminated cultivation tools, Movement of infested soil
HOW TO REMOVE IT?
Home remedies
There are no home treatments
Chemical treatments
There are no effective treatments against viruses, the treatments are focused on combating the insect or vector carrying the virus (SEE AVAILABLE TREATMENTS AGAINST INSECTS)
Authorized treatments in organic farming
There are no effective treatments against viruses, the treatments are focused on combating the insect or vector carrying the virus (SEE AVAILABLE TREATMENTS AGAINST INSECTS)
Insect allies
PREDATORY MITES
LADYBUGS
LACEWINGS
PARASITIC WASPS
HOVERFLIES OR PARASITIC FLIES
PREDATORY BUGS
There are no natural allies
Mycodiplosis oidii (predatory mosquito)
EFFECTIVE PRODUCTS TO ELIMINATE THIS DISEASE
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- Regularly monitor crops for early detection of aphids.
- Implement integrated pest management practices, including biological control with natural enemies of aphids.
- Use varieties of carrots resistant to the CRLV Virus if available.
- Maintain good field hygiene, eliminating weeds and volunteer plants that may serve as alternative hosts for the virus.
- Apply horticultural oils or insecticidal soaps to reduce the aphid population.
- Carry out crop rotations to interrupt the virus cycle.
- Use physical barriers such as anti-aphid nets to protect young plants.
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