top of page
external-file_edited.jpg

The Guide to Caring for Your Plants

Learn to recognize pests and how to combat them

external-file_edited.jpg

The Guide to Caring for Your Plants

Learn to recognize pests and how to combat them

Powdery Mildew

WHAT IT IS AND HOW TO ELIMINATE

Vid

Powdery Mildew

Uncinula Necator / Erysiphe Necator

Pathogen:

Fungus

Type:

Risk to the plant:

HIGH

Oídio

Uncinula necator / Erysiphe necator en Vid
bannerFichasGlosarioEN4.jpg
1709890758744.png

WHO CAUSES IT?

Uncinula necator, also known as Erysiphe necator, is a pathogenic fungus that mainly affects grapevines. This fungus survives during the winter in the form of cleistothecia, resistant structures found in plant residues and in the cracks of the vine bark. With the onset of spring, these structures release spores that are carried by the wind to the young parts of the plant. Once the spores land on the leaves, shoots or clusters, they germinate if conditions are favorable and form a structure called mycelium that grows on the surface of the plant tissue, feeding on the plant cells. This mycelium, with a powdery and whitish appearance, produces new spores that are released to continue infecting more parts of the vine. Disease development is accelerated by warm, humid climates, allowing several cycles of infection during the growing season.

1713099015053 (2).png

SYMPTOMS

Powdery mildew caused by Uncinula necator is a disease that seriously affects vine production. It manifests itself mainly in the leaves, stems and bunches of grapes, and can significantly reduce the quality and quantity of the harvest if not properly controlled. The first signs of infection usually appear as chlorotic Taches on the leaves that later develop a white powdery coating. As the disease progresses, affected parts may become deformed, wither, or dry.
- Appearance of a white, powdery layer on the leaves, stems and bunches.
- Chlorotic Taches on the leaves that progress to necrosis.
- Deformation of leaves and young shoots.
- Delay in the growth of shoots and clusters.
- Cracking and malformation of the grapes, which affects their quality.
- Premature fall of affected leaves in severe infections.

Uncinula necator / Erysiphe necator en Vid
Uncinula necator / Erysiphe necator en Vid
Uncinula necator / Erysiphe necator en Vid
bannerFichasGlosarioEN5.jpg
pronostica_edited.png

DEVELOPMENT CONDITIONS

Temperature:

20°C - 25°C

Humidity:

70% - 80%

1709890758697.png

HOW IS IT SPREAD?

Spores carried by the wind, direct contact between infected and healthy leaves, cleistothecia in plant remains, contaminated instruments

1709890758673.png

HOW TO ELIMINATE IT?

Home treatments

DILUTED MILK

HORSETAIL INFUSION

Natural allies

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%

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%

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)

RECOMMENDED PRODUCTS TO ELIMINATE THE PEST

1714749024044.png

REPELLENT PLANTS

-

1709890758720.png

RECOMMENDATIONS

- Avoid wetting the leaves when watering, especially at night.
- Ensures good ventilation between plants.
- Remove infected leaves as soon as you see them.
- Use resistant varieties when possible.
- Apply natural fungicides such as sulfur, baking soda or horsetail extract.
- Check your plants frequently, especially in hot and dry climates.

OTHER PESTS THAT MAY INTEREST YOU

DID YOU LIKE IT?

Now you can always have it on your mobile, without ads and totally FREE. TRY idMicrobe NOW!

button_google_play_EN.png
boton_mobile_Version_EN.jpg
bottom of page