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How to recognize and treat black scab on potatoes
Black Scab, Black Scab Or Potato Pox
Fungus
Type:
Risk to the plant:
INTERMEDIATE
Rhizoctonia Solani
Pathogen:
Micosis/Hongos
WHO CAUSES IT?
Rhizoctonia solani is a phytopathogenic fungus that causes the disease known as black scab, black scab or potato pox. This fungus develops in the soil and spreads through resistance structures called sclerotia, which can survive in the soil for long periods. The spores of the fungus infect potato plants through wounds or natural entry points, such as the roots or stem. Rhizoctonia solani is able to survive and spread in various climatic conditions, and can affect different crops, including potatoes.
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SYMPTOMS
Potato black scab produces necrotic, scabby lesions on the tubers and shoots of the potato plant. These lesions usually appear as brown or black Taches on the surface of the tubers and can vary in size. Additionally, the fungus can affect roots and shoots, causing weak growth or stunting in young plants.
• Necrotic and scabby lesions on potato tubers.
• Brown or black Taches on the surface of the tubers.
• Weakness in the growth of young plants.
• Reduction in the quality and quantity of the harvest.
DEVELOPMENT CONDITIONS
Temperature:
18°C - 25°C
Humidity:
70% - 80%
HOW IS IT SPREAD?
Contaminated soil, sclerotia, contaminated growing tools, direct contact with infected plants or tubers.
HOW TO ELIMINATE IT?
Home treatments
There are no home treatments
Natural allies
Chemical treatments
There are no treatments for this disease. Treatments are directed at the insect vectors that transmit it. See insect treatments.
RECOMMENDED PRODUCTS TO ELIMINATE THE PEST
REPELLENT PLANTS
RECOMMENDATIONS
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