Virus
WHAT IS AND HOW TO ELIMINATE
Mild Potato Viruses
Potato Virus A (Pva) / Potato Virus X (Pvx)
Pathogen:
Virus
Type:
Risk to the plant:
MILD
DESCRIPTION
WHO CAUSES IT?
Potato virus A (PVA) and Potato virus X (PVX) are two viruses that affect potato crops, causing diseases that can reduce their productivity and quality. PVA and PVX are primarily transmitted by aphids, insect vectors that feed on plant sap and can transport viruses from one plant to another. Additionally, these viruses can persist in the soil and in infected tubers, contributing to the spread of the disease.
SYMPTOMS
PVA and PVX produce a variety of symptoms in potato plants, affecting their development and yield. Symptoms can vary depending on the viral strain and growing conditions, but typically include leaf Taches, deformation, yellowing, and reduced growth. Additionally, tubers may show lesions and discoloration, affecting their quality and commercial value.
• Chlorotic or yellowish Taches on the leaves.
• Deformation and curling of the leaves.
• Reduction in plant growth and vigor.
• Lesions and discoloration on the tubers.
TEMPERATURE AND HUMIDITY
15°C - 25°C
60% - 80%
HOW IS IT SPREAD?
Aphid vectors, contact with infected plants or tubers, contaminated 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)
Treatments allowed 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
EFFECTIVE PRODUCTS TO ELIMINATE THIS PEST
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Effective against all types of fungi
• Use potato varieties resistant to viruses.
• Control aphid vector populations using specific insecticides or biological methods.
• Practice crop rotation to avoid the accumulation of vectors and viruses in the soil.
• Regularly inspect plants for early signs of infection and remove infected plants.
• Avoid using infected potato seeds and only use certified seeds.
• Maintain good hygiene when storing tubers to prevent spread.
Recommendations
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