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Recognize and eliminate pests and diseases from your plants with idMicrobe

The Guide to Caring for Your Plants

Learn to recognize pests and how to combat them

Guide to plant diseases and professional and home treatments - IdMicrobe

The Guide to Caring for Your Plants

Learn to recognize pests and how to combat them

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Onion smut: what it is, how it originates, and how to eliminate it effectively

Onion Blight Or Charcoal

Urocystis Cepulae

Pathogen:

Fungus

Type:

Risk to the plant:

INTERMEDIATE

Onion smut: what it is, how it originates, and how to eliminate it effectively
Onion smut | idMicrobe

Don’t know which pest or disease your plant has?

Correctly identifying the problem is key to saving the plant.

 

A plant expert analyzes the photos and sends you a clear diagnosis within 24 hours, explaining the causes and the most effective solutions step by step.

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DESCRIPTION

WHO CAUSES IT?

Urocystis cepulae is a phytopathogenic fungus that causes the disease known as onion blight. The fungus produces spores that form into large structures called sporangia. These spores are released when the structures break down and can infect new plants. The fungus can survive in the soil and in the remains of infected plants for several years, waiting for favorable conditions to reinfect plants.

SYMPTOMS

Onion blight or smut manifests itself with the appearance of dark Taches on the leaves and flowers of onions. The Taches turn black and can form sporulated structures on the leaves, stems and bulbs, which can weaken the plant and reduce the quality of the crop.

• Appearance of dark Taches on leaves and flowers.
• The Taches turn black and may form sporulated structures.
• Weakening of the plant and reduction in the quality of the harvest.
• Onion bulbs that may develop black Taches.

Onion smut: Symptoms and damage in onions
Damage caused by onion smut in onions
Onion smut in onions: How to recognize and treat it effectively

Don’t know which pest or disease your plant has?

A plant expert reviews your photos and sends you a clear diagnosis within 24 hours, with step-by-step solutions.

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TEMPERATURE AND HUMIDITY

15 ºC - 25ºC

60% - 90%

Cargando...

HOW IS IT SPREAD?

Soil, water, remains of infected plants.

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HOW TO REMOVE IT?

Home remedies

BONE MEAL OR GROUND FISH SHELLS

RUSTY NAILS OR IRON SHAVINGS

BANANA PEELS

EPSOM SALTS (MAGNESIUM SULFATE)

SOLUTION WITH HOUSEHOLD BORAX

GROUND OR BOILED EGGSHELLS

COMPOST WITH ONION OR GARLIC SCRAPS

VEGETABLE COOKING WATER

WOOD ASH

WATER WITH VINEGAR OR LEMON (VERY DILUTED)

GARLIC INFUSION

USED COFFEE OR TEA

BANANA AND EGGSHELL INFUSION

POTATO OR LEGUME COOKING WATER

COMPOST FROM FRESH GREEN LEAVES

COMPOST OR WELL-AGED MANURE

DILUTED MILK (1:10)

BANANA TEA

LEAF COMPOST

NETTLE SLURRY

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

Chemical treatments

• CUPROCALCIC SULFATE 20% [WP] P/P
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WP] P/P

Treatments allowed in organic farming

• CUPROCALCIC SULFATE 20% [WP] P/P
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [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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Fruit fly traps

Fruit fly traps

Non-Toxic. Reusable. For indoor and outside

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Treatment against snails and slugs

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

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100% ecological fungicide

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

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Biological Pest Control for Fungus Gnats, Thrips, & Whiteflies

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Light traps for insects

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

Anti-ant adhesive tape

Tree protection. Easy to use.

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Adhesive traps for insects

Adhesive traps for insects

For orchards, terraces and flower pots.

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Insecticide, fungicide, acaricide and nematicide spraying

Insecticide, fungicide, acaricide and nematicide spraying

100% organic. For indoor and outdoor use

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Lime for whitewashing

Lime for whitewashing

Insect Barrier/Repellent

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Fungus Gnat Killer & Bug Spray

Fungus Gnat Killer & Bug Spray

For outdoor and indoor use. Pet friendly

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Mature compost. Worm castings

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100% Natural. Soil Restorative

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100% organic diatomaceous earth

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Natural insecticide against insects

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Beetle traps

Beetle traps

Ideal for ornamentals, flowers and shrubs.

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Trap for Tuta absoluta

Trap for Tuta absoluta

Attracts and traps tomato moths

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Snail and slug traps

Snail and slug traps

Ideal for orchards, gardens and pots.

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Copper-based fungicide - Curative and preventive

Copper-based fungicide - Curative and preventive

Effective against all types of fungi

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• Use onion varieties resistant or tolerant to Urocystis cepulae.
• Practice crop rotation to reduce pathogen pressure in the soil.
• Disinfect cultivation tools and equipment to avoid the transmission of the fungus.
• Improve soil drainage to reduce humidity and avoid favorable conditions for the fungus.
• Remove and destroy infected plants and plant remains.
• Apply specific fungicides following local recommendations.

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