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Red Spider
Tetranychus Urticae
Pathogène :
Insect
Type:
Risque:
HIGH
Araña roja
Descrição da doença
Tetranychus urticae, commonly known as the red spider, is a phytophagous mite that affects a wide range of plants, including avocado. This pathogen goes through several stages during its life. The eggs, round and tiny, are laid on the lower surface of the leaves. After hatching, larvae emerge that have six legs. Then, the larvae molt into protonymphs and from there to deutonymphs, both stages have eight legs. Finally, after another molt, they reach the adult phase. The entire cycle from egg to adult can be completed in one week under optimal conditions. Adults are very small, about 0.5 mm, and range in color from greenish-yellow to red. Females can lay hundreds of eggs during their lifetime, facilitating rapid proliferation under favorable conditions.
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Descrição do patógeno
In avocado, the red spider causes a disease that manifests itself mainly in the foliage and can reduce the vitality of the tree and the quality of the fruit. Mites feed by sucking the cellular contents of leaves, which leads to discoloration and weakening of the leaves. Over time, the damage spreads, affecting photosynthesis and tree growth, and in severe infestations, it can result in defoliation.
- Discoloration and yellow Taches on the leaves
- Dry and brittle leaves
- Loss of vigor and reduced growth of the tree
- Leaf tissues with a bronze or silver appearance
- Premature defoliation in severe cases
- Lower quality and quantity of fruits
TEMPERATURA E UMIDADE
25-30°C
40-60%
CAMINHOS DE TRANSMISSÃO</span
Wind, Direct contact between plants, Contaminated tools, Animal vectors, Transport of infected plant material
CONTROL
Tratamento químico
• RAPE OIL 1.53% [AL] P/V
• RAPE OIL 848.24 g/l [EC] P/V
• ORANGE OIL 60g/L [ME] P/S
• PARAFFIN OIL (CAS [8042-47-5]) 54.6% [EW] P/V
• PARAFFIN OIL (CAS [8042-47-5]) 83% [EC] P/V
• PARAFFIN OIL (CAS [97862-82-3]) 80% [EC] P/V
• PARAFFIN OIL 83% [EC] P/V
• SULFUR 70% [SC] P/V
• SULFUR 72% [SC] P/V
• SULFUR 80% [DP] P/P
• SULFUR 80% [SC] P/V
• SULFUR 80% [WG] P/P
• SULFUR 80% [WP] P/P
• TAU-FLUVALINATE 24% [EW] P/V
Tratamento biológico
• RAPE OIL 1.53% [AL] P/V
• RAPE OIL 848.24 g/l [EC] P/V
• ORANGE OIL 60g/L [ME] P/S
• PARAFFIN OIL (CAS [8042-47-5]) 54.6% [EW] P/V
• PARAFFIN OIL (CAS [8042-47-5]) 83% [EC] P/V
• PARAFFIN OIL (CAS [97862-82-3]) 80% [EC] P/V
• PARAFFIN OIL 83% [EC] P/V
• SULFUR 70% [SC] P/V
• SULFUR 72% [SC] P/V
• SULFUR 80% [DP] P/P
• SULFUR 80% [SC] P/V
• SULFUR 80% [WG] P/P
• SULFUR 80% [WP] P/P
Traitements biologiques
• AMBLYSEIUS ANDERSONI (parasitoid and predatory mites)
• BEAUVERIA BASSIANA (STRAIN ATCC 74040) 2.3% (2.3X10E7 VIABLE SPORES/ML) [OD] P/V
• BEAUVERIA BASSIANA (GHA STRAIN) 10.7% (2.26X10E13 CONIDIAS/L) [OD] P/V
• BEAUVERIA BASSIANA (GHA STRAIN) 22% (4.4 x 10E10 CONIDIAS/G) [WP] P/P
• NEOSEIULUS CALIFORNICUS (parasitoid and predatory mites)
• PHYTOSEIULUS PERSIMILIS (parasitoid and predatory mites)
Recomendações
- Regularly monitor avocado leaves for the early presence of mites.
- Use horticultural oils and insecticidal soaps to reduce mite populations.
- Implement biological controls, introducing natural predators such as predatory mites (Phytoseiulus persimilis) and lacewings.
- Avoid excessive use of broad-spectrum insecticides that can eliminate the natural enemies of the red spider.
- Keep the garden free of weeds and plant debris that can serve as a refuge for mites.
- Apply adequate fertilizers and irrigation to keep trees healthy and less susceptible to infestations.
- Use vegetable covers or mulch to maintain soil moisture and reduce the spread of mites.
- Carry out appropriate pruning to improve air circulation and reduce relative humidity in the foliage.
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.
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