Micosis/Hongos
Purple Spot
Mycosphaerella Fragarie / Ramularia Grevilleana
Pathogen:
Fungus
Type:
Risk to the plant:
INTERMEDIATE
DESCRIPTION
WHO CAUSES IT?
Purple spot on strawberries is caused by the fungus Mycosphaerella fragaria. This pathogen is a microorganism that develops mainly in humid and warm environments. Mycosphaerella fragaria mainly affects the leaves of strawberries, but can also spread to the stems and fruits. It is known to produce characteristic purple Taches on the leaves of the plant, giving rise to the common name of the disease.
SYMPTOMS
The disease caused by Mycosphaerella fragaria in strawberries manifests itself with the appearance of purple Taches on the leaves. These Taches are usually small at first, but over time they can grow and merge, covering large areas of the leaf surface. Affected leaves may turn yellow, wilt, and eventually fall prematurely, weakening the plant and reducing its ability to produce fruit.
TEMPERATURE AND HUMIDITY
18°C - 25°C
70% - 90%
HOW IS IT SPREAD?
Wind, irrigation water, direct contact between plants, cultivation equipment.
HOW TO REMOVE IT?
Home remedies
There are no home treatments
Chemical treatments
• AZOXISTROBIN 25% [SC] P/V
• DIFENOCONAZOLE 12.5% + CYFLUFENAMIDE 1.5% [DC] P/V
• DIFENOCONAZOLE 25% [EC] P/V
• CUPRIC HYDROXIDE 20% (EXPR. IN CU) [WG] P/P
• CUPRIC HYDROXIDE 25% (EXPR. IN CU) [WG] P/P
• COPPER OXYCHLORIDE 30% (EXPR. IN CU) [WP] P/P
• COPPER OXYCHLORIDE 35% (EXPR. IN CU) [WG] P/P
• COPPER OXYCHLORIDE 38% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 50% (EXPR. IN CU) [WP] P/P
• CUPROCALCIC SULFATE 12.4% (EXPR. IN CU) [SC] P/V
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WG] P/P
Treatments allowed in organic farming
• CUPRIC HYDROXIDE 20% (EXPR. IN CU) [WG] P/P
• CUPRIC HYDROXIDE 25% (EXPR. IN CU) [WG] P/P
• COPPER OXYCHLORIDE 30% (EXPR. IN CU) [WP] P/P
• COPPER OXYCHLORIDE 35% (EXPR. IN CU) [WG] P/P
• COPPER OXYCHLORIDE 38% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 50% (EXPR. IN CU) [WP] P/P
• CUPROCALCIC SULFATE 12.4% (EXPR. IN CU) [SC] P/V
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WG] P/P
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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To prevent and control the spread of purple spot in strawberry crops, it is important to implement integrated pest management practices. This includes the removal of infected plant remains, the use of resistant varieties, the application of preventive fungicides and maintaining adequate ventilation and drainage in the crop.
Recommendations
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