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The Guide to Caring for Your Plants

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Learn to recognize pests and how to combat them

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Pest Guide

Symptoms, treatments, and recommendations for treating root and stem rot

Root And Stem Rot

Rhizoctonia Sp., Fusarium Sp.

Pathogen:

Fungus

Type:

Risk:

HIGH

Pudrición de raíz y tallo

Plantas decorativas de jardín y/o interior

Root and stem rot: Symptoms and damage in decorative garden and/or indoor plants

Damage caused by root and stem rot in decorative garden and/or indoor plants

WHO CAUSES IT?

Rhizoctonia sp. and Fusarium sp. They are pathogenic fungi that cause serious diseases in various plants. Rhizoctonia sp. It is characterized by the formation of brown mycelium and sclerotia, resistance structures that allow the fungus to survive in the soil and remains of infected plants during unfavorable periods. The fungus is activated when environmental conditions are suitable, invading the roots and stems of plants through wounds or directly by penetration. Fusarium sp., on the other hand, is known for its asexual spores called conidia, which are dispersed primarily through water and soil. This fungus can also produce chlamydospores, which are resistance structures that allow it to persist in the soil for long periods. Both fungi can infect plants at any stage of development, causing root and stem rot, leading to a significant decrease in plant health and productivity.

SYMPTOMS

Root and stem rot in plants, caused by Rhizoctonia sp. and Fusarium sp., manifests itself with symptoms that severely affect the root system and the base of the stem. This disease begins with a yellowing and wilting of the leaves, followed by brown decay in the roots and stems, which can eventually lead to the death of the plant.

- Yellowing of the leaves.
- General wilting of the plant.
- Brown rot on the roots.
- Decomposition at the base of the stem.
- Roots with a watery texture and bad smell.
- Reduction in plant growth.
- Premature death of the plant.

Root and stem rot in decorative garden and/or indoor plants: How to recognize and treat it effectively

TEMPERATURE AND HUMIDITY

20°C - 30°C

70% - 90%

TRANSMISSION ROUTES

Irrigation water, contaminated gardening tools, infected plant remains, direct contact between plants, infected seeds

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

TREATMENTS

Chemical treatments

• AZOXISTROBIN 25% [SC] P/V
• CAPTAN 47.5% [SC] P/V
• CIPRODINIL 37.5% + FLUDIOXONIL 25% [WG] P/P
• FOLPET 50% [SC] P/V
• FOLPET 80% [WG] P/P
• PIRACLOSTROBIN 6.7% + BOSCALIDE 26.7% (I) [WG] P/P

Authorized treatments in organic farming

Biological control

• BACILLUS AMYLOLIQUEFACIENS subsp. plantarum (strain D747) 5% [SC] P/V
• BACILLUS SUBTILIS (STRAIN QST 713) 1.34% [SC] P/V
• CLONOSTACHYS ROSEA CEPA J1446 (GLIOCLADIUM CATENULATUM (CEPA J1446)) (1 x 10E 9 cfu/g) 900 g/kg [WG] P/P
• GLIOCLADIUM CATENULATUM (STRAIN J1446) 32% (2 X 10E8 CFU/G) [WP] P/P
• TRICHODERMA ASPERELLUM (STRAIN T25) (1X10E8 CFU/G) 0.5% + TRICHODERMA ATROVIRIDE (STRAIN T11) (1X10E8 CFU/G) 0.5% [WG] P/P
• TRICHODERMA ASPERELLUM (STRAIN T34) 12% (1.0 x 10E12 cfu/kg) [WP] P/P
• TRICHODERMA ATROVIRIDE (STRAIN I-1237) (1x10E8 cfu/g) 5% [WP] P/P

Recommendations

- Carry out a crop rotation with non-susceptible plants to reduce the accumulation of pathogens in the soil.
- Use certified disease-free seeds and plants.
- Apply appropriate preventive fungicides at critical moments of the crop.
- Avoid excessive irrigation and ensure good soil drainage.
- Improve soil structure by adding organic matter to promote a less favorable environment for fungi.
- Practice proper management of crop residues, eliminating remains of infected plants.
- Implement physical or biological barriers to limit the spread of the fungus.
- Use resistant or tolerant plant varieties when available.
- Carry out periodic soil analyzes to monitor the presence of pathogens.