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idMicrobe: Tool to recognize plant diseases and consult home treatments

The Guide to Caring for Your Plants

Learn to recognize pests and how to combat them

Symptoms, treatments and recommendations for treating early blight or alternariosis

Early Blight Or Alternariosis

Alternaria Solani / Alternaria Alternata

Pathogen:

Fungus

Type:

Risk:

HIGH

Alternariosis

Patata

Early blight or alternariosis: Symptoms and damage in potatoes
Damage caused by early blight or alternariosis in potatoes
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WHO CAUSES IT?

Alternaria solani and Alternaria alternata are phytopathogenic fungi that cause the disease known as early blight or alternariosis in potatoes. These fungi produce spores that spread through air, water and soil, infecting potato plants primarily in warm, humid conditions. The fungus can survive in soil and infected plant remains for long periods. During the growing season, spores can infect potato leaves, stems and tubers, causing significant damage.

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SYMPTOMS

Early blight or alternariosis produces lesions on the leaves, stems and tubers of the potato. On leaves, symptoms include dark, concentric Taches, which can cause premature defoliation. On the stems, the fungus can cause lesions and weaken the plant. In tubers, infections can cause rot and reduce the quality of the crop.

• Dark, concentric Taches on the leaves.
• Injuries to the stems and weakening of the plant.
• Rot and lesions on the tubers.
• Premature defoliation and reduction in crop quality.

Early blight or alternariosis in potatoes: How to recognize and treat it effectively
Early Blight Or Alternariosis
Alternaria Solani / Alternaria Alternata
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TEMPERATURE AND HUMIDITY

20°C - 30°C

80% - 100%

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TRANSMISSION ROUTES

Spores carried by air, water, soil, infected plant remains, contaminated growing tools.

Do you want to remove this pest? Choose how you want to treat it.

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TREATMENTS

Chemical treatments

• AZOXISTROBIN 25% [SC] P/V
• CYMOXANIL 2.85% + FOSETIL-AL 30% + COPPER OXYCHLORIDE 16% (EXPR. IN CU) [WG] P/P
• CYMOXANIL 3% + CUPROCALCIC SULFATE 22.5% (EXPR. IN CU) [WP] P/P
• CYMOXANILE 4% + FOLPET 25% + FOSETIL-AL 50% [WG] P/P
• DIFENOCONAZOLE 1.67% [EC] P/V
• DIFENOCONAZOLE 25% [EC] P/V
• FOLPET 10% + CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WP] P/P
• FOLPET 50% [SC] P/V
• FOLPET 80% [WG] P/P
• 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 50% (EXPR. IN CU) [WP] P/P
• Mandipropamide 25% + DIFENOCONAZOLE 25% [SC] P/V
• METALAXIL 8% + COPPER OXYCHLORIDE 40% (EXPR. IN CU) [WP] P/P
• METIRAM 70% [WG] P/P
• COPPER OXYCHLORIDE 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 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 52% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 70% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 70% [SC] P/V
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WG] P/P
• CUPROCALCIC SULFATE 20% [WP] P/P
• TRIBASIC COPPER SULFATE 19% (EXPR. IN CU) [SC] P/V
• ZOXAMIDE 5.88% + COPPER OXYCHLORIDE 25% (Exp. in Cu) [WG] P/P

Authorized treatments in organic farming

• 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 50% (EXPR. IN CU) [WP] P/P
• COPPER OXYCHLORIDE 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 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 52% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 70% (EXPR. IN CU) [SC] P/V
• COPPER OXYCHLORIDE 70% [SC] P/V
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WG] P/P
• CUPROCALCIC SULFATE 20% [WP] P/P
• TRIBASIC COPPER SULFATE 19% (EXPR. IN CU) [SC] P/V

Biological control

• BACILLUS AMYLOLIQUEFACIENS (strain FZB24) 13% [WP] P/P
• BACILLUS AMYLOLIQUEFACIENS (MBI 600 strain) 11% [WP] P/P
• BACILLUS SUBTILIS (STRAIN QST 713) 1.34% [SC] P/V

Recommendations

• Use potato varieties resistant to Alternaria solani and Alternaria alternata.
• Apply specific fungicide treatments in the critical phases of plant development.
• Avoid excess moisture in the soil and foliage, as it favors the development of fungi.
• Improve ventilation in the crop through pruning and proper spacing management.
• Remove and destroy the remains of infected plants to reduce the presence of spores in the field.
• Carry out crop rotation with non-host plants to reduce the persistence of fungi in the soil.

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Sticky traps for insects

For orchards, terraces and flower pots.

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Insecticide, fungicide, acaricide and nematicide spraying

100% organic. For indoor and outdoor use

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Lime for whitewashing

Insect Barrier/Repellent

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Fungus Gnat Killer & Bug Spray

For outdoor and indoor use. Pet friendly

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Mature compost. Worm castings

100% Natural. Soil Restorative

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100% organic diatomaceous earth

Natural insecticide against insects

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Beetle traps

Ideal for ornamentals, flowers and shrubs.

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Trap for Tuta absoluta

Attracts and traps tomato moths

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Snail and slug traps

Ideal for orchards, gardens and pots.

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Copper-based fungicide - Curative and preventive

Effective against all types of fungi

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Insecticidal soap

Home treatment. Eco-friendly

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Bacillus Thuringiensis BT Organic Worm & Caterpillar Control

Eco-friendly. Respectful of animals, the environment, and people.

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Fruit fly traps

Non-Toxic. Reusable. For indoor and outside

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Treatment against snails and slugs

Granulated bait, attractive, safe and fast.

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Natural Pesticide, Fungicide, Miticide, Insecticide, Spider Mites, Powdery Mildew, Botrytis and Mold

100% ecological fungicide

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Nematodes - Biological Pest Control for Fungus Gnats, Thrips, & Whiteflies

Biological Pest Control for Fungus Gnats, Thrips, & Whiteflies

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Light traps for insects

Solar trap for outside

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Effective against all types of fungi

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Anti-ant adhesive tape

Tree protection. Easy to use.

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TREATMENTS

Homemade remedies

POTASSIUM SOAP AND NEEM OIL SOLUTION

POTASSIUM SOAP SOLUTION + NEEM OIL + DIATOMACEOUS EARTH

BAKING SODA AND NEUTRAL SOAP SOLUTION

GARLIC INFUSION WITH NEUTRAL SOAP

CHROMATIC OR ADHESIVE TRAPS

DILUTED MILK

HORSETAIL INFUSION

TRUNK WHITEWASHING

DIATOMACEOUS EARTH

WOOD ASH

NETTLE SLURRY

CUT THE AFFECTED BRANCHES AND APPLY CINNAMON

GARLIC AND CINNAMON INFUSION

INFUSION OF WORMWOOD, CHILI OR CHILLI

CLEAN THE AFFECTED AREA AND APPLY ASH PASTE WITH GARLIC OR CINNAMON

GARLIC AND MINT INFUSION

LIGHT TRAPS

APPLY CINNAMON POWDER

PITFALL TRAPS

CRUSHED EGG SHELLS

CLEAN AND SEAL THE WOUND WITH CLAY, CINNAMON AND GARLIC PASTE

GARLIC INFUSION

MATURE COMPOST

TRAPS WITH VINEGAR AND SOAP

SEAL HOLES WITH ASH PASTE AND CRUSHED GARLIC

VINEGAR AND BAKING SODA SOLUTION

ANT TRAP

TAPE TRAP

PHEROMONE TRAP

ALCOHOL TRAPS

FUNNEL TRAP

There are no home treatments

Natural allies

PREDATORY MITES

LADYBUGS

LACEWINGS

PARASITIC WASPS

HOVERFLIES OR PARASITIC FLIES

PREDATORY BUGS

There are no natural allies

Mycodiplosis oidii (predatory mosquito)

Chemical treatments

There are no treatments for this disease. Treatments are directed at the insect vectors that transmit it. See insect treatments.

ABAMECTIN 0.0015% + PYRETHRINS 0.02%

RAPESEAL OIL

RAPESEAL OIL + PYRETHRINS

ORANGE OIL 6%

PARAFFIN OIL

ACETAMIPRID

ACETAMIPRID 0.005%

ACETAMIPRID 20%

SULFUR

COPPER 20%

COPPER 25%

COPPER 35%

COPPER 38%

COPPER 50%

COPPER 52%

DELTAMETHRIN 1.57%

DELTAMETHRIN 10%

DELTAMETHRIN 2.5%

DIFENOCONAZOLE 1.67%

ESFENVALERATE 2.5%

ESFENVALERATE 5%

100% GARLIC EXTRACT

PHENHEXAMIDE 50%

FLUPYRADIFURONE

FLUPIRADIFURONE 20%

FOSETIL-AL 80%

FERRIC PHOSPHATE

ALUMINUM PHOSPHIDE 56%

PHOSTIAZATE 10%

PHOSTIAZATE 15%

HEXITIAZOX 10%

POTASSIUM HYDROGEN CARBONATE

LAMBDA CYHALOTHRIN

LAMINARIN 4.5%

METALDEHYDE

PIRACLOSTROBIN 6.7% + BOSCALIDE 26.7%

PYRETHRINS

PYRIPROXIFEN 10%

POTASSIUM SALTS OF UNSATURATED FATTY ACIDS

SPINOSAD 0.024%

SPINOSAD 12%

SPINOSAD 48%

TAU-FLUVALINATE 24%

TETRACONAZOLE 10%

TETRACONAZOLE 12.5%

TETRACONAZOLE 4%

TRICHODERMA ASPERELLUM (STRAIN T34)

1709890758720.png

RECOMMENDATIONS

- Check the back of the leaves frequently, especially in dry weather.
- Spray water on the leaves to increase humidity and prevent them from settling.
- Keep plants healthy with good watering and adequate light.
- If you see cobwebs or damage, clean the leaves with a damp cloth or pressurized water.
- Use potassium soap or neem oil every few days until they disappear.

1714749024044.png

REPELLENT PLANTS

Rosemary, Dill, Coriander

EFFECTIVE PRODUCTS TO ELIMINATE THIS PEST

Sponsored link

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Sticky traps for insects

For orchards, terraces and flower pots.

Sponsored link

project_20230612_2032143-01.png

Insecticide, fungicide, acaricide and nematicide spraying

100% organic. For indoor and outdoor use

Sponsored link

project_20230612_2032143-01.png

Lime for whitewashing

Insect Barrier/Repellent

Sponsored link

project_20230612_2032143-01.png

Fungus Gnat Killer & Bug Spray

For outdoor and indoor use. Pet friendly

Sponsored link

project_20230612_2032143-01.png

Sponsored link

project_20230612_2032143-01.png

Sponsored link

project_20230612_2032143-01.png

Mature compost. Worm castings

100% Natural. Soil Restorative

Sponsored link

project_20230612_2032143-01.png

100% organic diatomaceous earth

Natural insecticide against insects

Sponsored link

project_20230612_2032143-01.png

Beetle traps

Ideal for ornamentals, flowers and shrubs.

Sponsored link

project_20230612_2032143-01.png

Trap for Tuta absoluta

Attracts and traps tomato moths

Sponsored link

project_20230612_2032143-01.png

Snail and slug traps

Ideal for orchards, gardens and pots.

Sponsored link

project_20230612_2032143-01.png

Copper-based fungicide - Curative and preventive

Effective against all types of fungi

Sponsored link

project_20230612_2032143-01.png

Sponsored link

project_20230612_2032143-01.png

Insecticidal soap

Home treatment. Eco-friendly

Sponsored link

project_20230612_2032143-01.png

Bacillus Thuringiensis BT Organic Worm & Caterpillar Control

Eco-friendly. Respectful of animals, the environment, and people.

Sponsored link

project_20230612_2032143-01.png

Fruit fly traps

Non-Toxic. Reusable. For indoor and outside

Sponsored link

project_20230612_2032143-01.png

Treatment against snails and slugs

Granulated bait, attractive, safe and fast.

Sponsored link

project_20230612_2032143-01.png

Sponsored link

project_20230612_2032143-01.png

Sponsored link

project_20230612_2032143-01.png

Natural Pesticide, Fungicide, Miticide, Insecticide, Spider Mites, Powdery Mildew, Botrytis and Mold

100% ecological fungicide

Sponsored link

project_20230612_2032143-01.png

Nematodes - Biological Pest Control for Fungus Gnats, Thrips, & Whiteflies

Biological Pest Control for Fungus Gnats, Thrips, & Whiteflies

Sponsored link

project_20230612_2032143-01.png

Light traps for insects

Solar trap for outside

Sponsored link

project_20230612_2032143-01.png

Sponsored link

project_20230612_2032143-01.png

Effective against all types of fungi

Sponsored link

project_20230612_2032143-01.png

Anti-ant adhesive tape

Tree protection. Easy to use.

*The recommended treatments are recommendations based on the authorities' databases and do not replace in any way the guidelines established by the legislation of each country.

*Products shown are recommendations and not our own products. As Amazon Associates, we earn revenue from purchases of recommended products.

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Thrips

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Sclerotium Disease, Southern Blight Or Southern Blight

Powdery Mildew

Rhizomania

Nematodes

Carrot Scab

Bad Vinous

Ramularia

Rust

Beet Yellowness Virus

Cleonus

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