Micosis/Hongos
Scabies Or Scabies
Sphaceloma Prinum
Pathogen:
Fungus
Type:
Risk to the plant:
INTERMEDIATE
DESCRIPTION
WHO CAUSES IT?
Sphaceloma pirinum is a pathogenic fungus responsible for causing the disease known as scab or scab in pear trees. This fungus is characterized by its ability to survive in plant remains and the bark of trees during the winter. In spring, with increasing temperature and humidity, spores of the fungus are released and spread through wind and rainwater, infecting new areas of the tree. Spores germinate on the surface of leaves, shoots and fruits, penetrating the tissue through stomata or wounds. The fungus develops internally, producing secondary spores that can reinfect the same tree or spread to nearby trees, continuing the infection process throughout the growing season.
SYMPTOMS
In the pear tree, Sphaceloma pirinum infection produces characteristic lesions that affect both leaves and fruits, causing significant damage that affects the quality and production of the crop. The disease begins with small dark Taches that expand, developing a rough, corky texture.
- Small dark, raised Taches on the leaves.
- Rough and corky lesions on the fruits.
- Deformation and cracking of the affected fruits.
- Premature fall of severely infected leaves.
- Reduction in the commercial quality of the fruits due to deformations.
- Possible defoliation and weakening of the tree in severe cases.
TEMPERATURE AND HUMIDITY
15°C - 25°C
70% - 90%
HOW IS IT SPREAD?
Wind, Rain, Contaminated pruning tools, Infected plant material, Direct contact between plants
HOW TO REMOVE IT?
Home remedies
There are no home treatments
Chemical treatments
• SULFUR 70% [SC] P/V
• SULFUR 72% [SC] P/V
• SULFUR 80% [SC] P/V
• SULFUR 80% [WG] P/P
• SULFUR 80% [WP] P/P
• SULFUR 82.5% [SC] P/V
• DIFENOCONAZOLE 1.67% [EC] P/V
• DIFENOCONAZOLE 25% [EC] P/V
• CUPRIC HYDROXIDE 13.6% (EXPR. IN CU) + COPPER OXYCHLORIDE 13.6% (EXPR. IN CU) [SC] P/V
• CUPRIC HYDROXIDE 20% (EXPR. IN CU) [WG] P/P
• CUPRIC HYDROXIDE 25% (EXPR. IN CU) [WG] P/P
• CUPRIC HYDROXIDE 35% (EXPR. IN CU) [WG] P/P
• CUPRIC HYDROXIDE 36% (EXPR. IN CU) [SC] P/V
• CUPRIC HYDROXIDE 40% (EXPR. IN CU) [WG] P/P
• CUPRIC HYDROXIDE 50% (EXPR. IN CU) [WG] P/P
• CUPRIC HYDROXIDE 50% (EXPR. IN CU) [WP] P/P
• COPPER OXYCHLORIDE 14% (exp. in Cu) + CUPRIC HYDROXIDE 14% (exp. in Cu) [WG] P/P
• COPPER OXYCHLORIDE 25% (EXPR. IN CU) [WG] P/P
• COPPER OXYCHLORIDE 30% (EXPR. IN CU) [WP] P/P
• COPPER OXYCHLORIDE 35% (exp. in Cu) [WG] P/P
• COPPER OXYCHLORIDE 35% (EXPR. IN CU) [WG] P/P
• COPPER OXYCHLORIDE 37.5% (EXPR. IN CU) [WG] P/P
• COPPER OXYCHLORIDE 38% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 50% (EXPR. IN CU) [WG] P/P
• COPPER OXYCHLORIDE 50% (EXPR. IN CU) [WP] P/P
• COPPER OXYCHLORIDE 52% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 70% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 70% [SC] P/V
• CUPROUS OXIDE 50% (EXPR. IN CU) [WP] P/P
• CUPROUS OXIDE 75% (EXPR. IN CU) [WG] P/P
• CUPROCALCIC SULFATE 12.4% (EXPR. IN CU) [SC] P/V
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WG] P/P
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WP] P/P
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WG] P/P
• CUPROCALCIC SULFATE 20% [WP] P/P
• TEBUCONAZOLE 20% [EW] P/V
• TEBUCONAZOLE 25% [EC] P/V
• TEBUCONAZOLE 25% [EW] P/V
• TEBUCONAZOLE 25% [WG] P/P
• TETRACONAZOLE 10% [EC] P/V
• TETRACONAZOLE 12.5% [ME] P/V
• TETRACONAZOLE 4% [ME] P/V
Treatments allowed in organic farming
• SULFUR 70% [SC] P/V
• SULFUR 72% [SC] P/V
• SULFUR 80% [SC] P/V
• SULFUR 80% [WG] P/P
• SULFUR 80% [WP] P/P
• SULFUR 82.5% [SC] P/V
• CUPRIC HYDROXIDE 13.6% (EXPR. IN CU) + COPPER OXYCHLORIDE 13.6% (EXPR. IN CU) [SC] P/V
• CUPRIC HYDROXIDE 20% (EXPR. IN CU) [WG] P/P
• CUPRIC HYDROXIDE 25% (EXPR. IN CU) [WG] P/P
• CUPRIC HYDROXIDE 35% (EXPR. IN CU) [WG] P/P
• CUPRIC HYDROXIDE 36% (EXPR. IN CU) [SC] P/V
• CUPRIC HYDROXIDE 40% (EXPR. IN CU) [WG] P/P
• CUPRIC HYDROXIDE 50% (EXPR. IN CU) [WG] P/P
• CUPRIC HYDROXIDE 50% (EXPR. IN CU) [WP] P/P
• COPPER OXYCHLORIDE 14% (exp. in Cu) + CUPRIC HYDROXIDE 14% (exp. in Cu) [WG] P/P
• COPPER OXYCHLORIDE 25% (EXPR. IN CU) [WG] P/P
• COPPER OXYCHLORIDE 30% (EXPR. IN CU) [WP] P/P
• COPPER OXYCHLORIDE 35% (exp. in Cu) [WG] P/P
• COPPER OXYCHLORIDE 35% (EXPR. IN CU) [WG] P/P
• COPPER OXYCHLORIDE 37.5% (EXPR. IN CU) [WG] P/P
• COPPER OXYCHLORIDE 38% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 50% (EXPR. IN CU) [WG] P/P
• COPPER OXYCHLORIDE 50% (EXPR. IN CU) [WP] P/P
• COPPER OXYCHLORIDE 52% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 70% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 70% [SC] P/V
• CUPROUS OXIDE 50% (EXPR. IN CU) [WP] P/P
• CUPROUS OXIDE 75% (EXPR. IN CU) [WG] P/P
• CUPROCALCIC SULFATE 12.4% (EXPR. IN CU) [SC] P/V
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WG] P/P
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WP] P/P
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WG] P/P
• CUPROCALCIC SULFATE 20% [WP] 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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- Carry out adequate pruning to improve ventilation and reduce humidity in the tree canopy.
- Remove and destroy infected plant debris and fallen leaves to minimize the source of inoculum.
- Apply preventive fungicide treatments in early spring and during periods of high humidity.
- Regularly monitor trees for early signs of infection and take immediate action.
- Avoid sprinkler irrigation that increases humidity in the foliage, preferring drip irrigation systems.
- Plant scab-resistant pear varieties, if available in the region.
- Implement a rotation of fungicides to prevent the emergence of pathogen resistance.
- Maintain a balanced fertilization program to ensure the general health of the tree and its resistance capacity.
- Promote the use of biological methods and natural controllers that can help reduce the incidence of Sphaceloma pirinum.
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