Symptoms, treatments, and recommendations for treating root-knot nematodes
Root-Knot Nematodes
Meloidogyne Spp.
Pathogen:
Type:
Nematode
Risk:
HIGH
Calabaza
Nematodos
WHO CAUSES IT?
Meloidogyne spp., commonly known as root-knot nematodes, are microscopic nematodes that parasitize a wide variety of plants. These pathogens have a complex interaction with their hosts. Adult females insert themselves into the roots of plants and deposit their eggs in an external gelatinous matrix. The larvae emerge from the eggs and move through the soil in search of new roots. Once the larvae penetrate the roots, they feed on the vascular tissue, causing the formation of characteristic galls or nodules. These galls interfere with the transport of water and nutrients in the plant, weakening it significantly. Females continue their reproductive cycle within the galls, while second-generation larvae search for new roots to infest, thus perpetuating the infection cycle.
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SYMPTOMS
In pumpkins, root-knot nematodes cause a disease that manifests itself through a series of symptoms that affect both the root system and the general growth of the plant. Symptoms include the formation of galls on the roots, which can be seen with the naked eye. These galls obstruct the absorption of water and nutrients, leading to poor growth and the appearance of other symptoms. Infected plants may show chlorosis, reduction in leaf size and general wilting, especially during periods of water stress. Plants may also have lower yields and lower quality fruits.
- Formation of galls on the roots
- Poor growth
- Chlorosis (yellowing of leaves)
- Reduction in the size of the leaves
- General wilting
- Lower yield and lower quality fruits
TEMPERATURE AND HUMIDITY
25-30°C
50-80%
TRANSMISSION PATHS
Contaminated soil, Irrigation water, Agricultural tools, Infected plant material, Agricultural machinery, Earthworks
Do you want to remove this disease? Choose how you want to treat it.
TREATMENTS
Chemical treatment
• AZADIRACTIN 1% (AS AZADIRACTIN A) [EC] P/V
• Azadirachtin 2.6% (AS AZADIRACTIN A) [EC] P/V
• 100% GARLIC EXTRACT [SC] P/V
• Garlic extract 45% [GR] P/P
• FLUOPYRAM 40% [SC] P/V
Authorized treatments in organic farming
• AZADIRACTIN 1% (AS AZADIRACTIN A) [EC] P/V
• Azadirachtin 2.6% (AS AZADIRACTIN A) [EC] P/V
• 100% GARLIC EXTRACT [SC] P/V
• Garlic extract 45% [GR] P/P
Biological control
• BACILLUS FIRMUS I-1582 5% [WP] P/P
• PURPUREOCILLIUM LILACINUM (CEPA 251) 21.6% [DC] P/V
• STEINERNEMA CARPOCAPSAE (Parasitoid and predatory nematodes)
Recommendations
- Use cultivars resistant or tolerant to nematodes.
- Implement crop rotation practices, avoiding planting susceptible species consecutively.
- Perform soil analysis before planting to detect the presence of nematodes.
- Apply authorized nematicides, strictly following the recommendations for use.
- Promote soil health by adding organic matter and using compost.
- Practice adequate irrigation to avoid water stress conditions in plants.
- Introduce trap crops that can attract and reduce the population of nematodes in the soil.
- Disinfect agricultural tools and machinery to prevent the spread of nematodes.
*The recommended treatments are still recommendations according to the databases of the authorities and at no time do they replace the guidelines established according to the legislation of each country
*The products shown are recommendations and are not our own products. As Amazon Associates, we earn revenue from purchases of recommended products.
TREATMENTS
Homemade treatments
There are no home treatments
Natural allies
Chemical treatments
There are no treatments for this disease. Treatments are directed at the insect vectors that transmit it. See insect treatments.
RECOMMENDATIONS
REPELLENT PLANTS
RECOMMENDED PRODUCTS TO ELIMINATE THIS PEST
*The recommended treatments are still recommendations according to the databases of the authorities and at no time do they replace the guidelines established according to the legislation of each country
*The products shown are recommendations and are not our own products. As Amazon Associates, we earn revenue from purchases of recommended products.
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