Enjoy idMicrobe TOTALLY FREE, with no trial periods.
Mildew
Peronospora Farinosa
Pathogène :
Oomycete
Type:
Risque:
HIGH
Mildiu
Descrição da doença
Peronospora farinosa is an oomycete fungus that causes downy mildew on various plants, including chard. This pathogen develops and thrives in moist, cool conditions, producing spores that are spread by wind and water. The life cycle of Peronospora farinosa begins with the germination of spores on the surface of the leaves of the host plant. The spores produce germ tubes that penetrate the leaf tissues, where the fungus develops intercellularly, extracting nutrients from the cells through haustoria. As the fungus grows, it produces reproductive structures called sporangiophores, which emerge through the stomata of the leaves, releasing new spores into the environment. This process can be repeated several times during a growing season, especially under favorable weather conditions, allowing for rapid spread of the fungus.
.png){kind=small}
Descrição do patógeno
In chard, mildew caused by Peronospora farinosa causes symptoms that seriously affect the quality and yield of the plant. Infection generally begins on the youngest leaves, where chlorotic or yellowish Taches appear on the upper surface of the leaves. These Taches can expand and merge, forming large, necrotic areas. On the underside of the leaves, grayish or purple downy growth can be observed, which is a distinctive feature of downy mildew.
• Chlorotic or yellowish Taches on the upper surface of the leaves.
• Necrotic areas on the leaves.
• Grayish or purple hairy growth on the underside of leaves.
• Premature defoliation.
• Delay in plant growth.
• Reduction in the quality and quantity of the harvest.
TEMPERATURA E UMIDADE
10ºC - 20ºC
85% - 100%
CAMINHOS DE TRANSMISSÃO</span
Wind, water, contact between plants, gardening tools, infected crop residues.
CONTROL
Tratamento químico
• ORANGE OIL 6% [SL] P/V
• CYMOXANIL 2.85% + FOSETIL-AL 30% + COPPER OXYCHLORIDE 16% (EXPR. IN CU) [WG] P/P
• CYMOXANIL 45% [WG] P/P
• COS-OGA 1.25% [SL] P/V
• FOSETIL 31% + Propamocarb 53% [SL] P/V
• CUPRIC HYDROXIDE 13.6% (EXPR. IN CU) + COPPER OXYCHLORIDE 13.6% (EXPR. IN CU) [SC] P/V
• LAMINARIN 4.5% [SL] P/S
• MANDIPROPAMID 25% [SC] P/V
• METALAXIL 25% [WP] 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
• PIRACLOSTROBIN 6.7% + BOSCALIDE 26.7% (I) [WG] P/P
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WP] P/P
Tratamento biológico
• ORANGE OIL 6% [SL] P/V
• COS-OGA 1.25% [SL] P/V
• CUPRIC HYDROXIDE 13.6% (EXPR. IN CU) + COPPER OXYCHLORIDE 13.6% (EXPR. IN CU) [SC] P/V
• LAMINARIN 4.5% [SL] P/S
• 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
• CUPROCALCIC SULFATE 20% (EXPR. IN CU) [WP] P/P
Traitements biologiques
• BACILLUS SUBTILIS (strain IAB/BS03) (1 x 10E8 cfu/ml) 10 g/l [SL] P/V
Recomendações
• Select mildew-resistant chard varieties.
• Maintain good air circulation between plants, spacing them appropriately and avoiding overhead irrigation.
• Implement a drip irrigation system to reduce moisture in the foliage.
• Apply preventive fungicides according to local recommendations and climatic conditions.
• Remove and destroy infected leaves to reduce the source of inoculum.
• Practice crop rotation, avoiding planting chard or other susceptible plants in the same area for at least two years.
• Maintain adequate fertilization, avoiding excess nitrogen, which can favor the development of the fungus.
• Clean and disinfect garden tools to prevent the spread of the pathogen.
TRAITEMENTS
Remèdes maison
There are no home treatments
Alliés naturels
Traitements chimiques
There are no treatments for this disease. Treatments are directed at the insect vectors that transmit it. See insect treatments.
RECOMMANDATIONS
- 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.
Plantes répulsives
Rosemary, Dill, Coriander
PRODUITS RECOMMANDÉS
*Os tratamentos recomendados ainda são recomendações de acordo com os bancos de dados de autoridades e em nenhum momento substituem as diretrizes estabelecidas de acordo com a legislação de cada país
*Les produits présentés sont des recommandations et ne sont pas nos propres produits. En tant qu'associés Amazon, nous gagnons des revenus grâce aux achats de produits recommandés.
GOSTOU?
Tudo isto e muito mais, à distância de um clique. EXPERIMENTE o idMicrobe JÁ!
