Marsh Phytophthora

The mycelium of this pathogen develops within the tissues of infected plants or in moist substrates. It has the ability to produce zoospores that move actively in water films.

The life cycle of Phytophthora uliginosa is closely linked to soil moisture levels. It persists as oospores in plant debris or soil, surviving harsh environmental conditions.

The biology of this pathogen allows it to rapidly colonize the root system and root collar of plants when the hydro-balance of the area is disrupted.

The pathogen shows high aggressiveness specifically in waterlogged conditions, where other soil microorganisms may be inhibited due to oxygen deficiency.

The main factor contributing to the development of the disease is excessive soil moisture and stagnant water in the root zone of plants.

The pathogen propagates actively at lower temperatures, often accompanied by high humidity in low-lying or marshy areas.

Disruption of soil aeration creates an ideal environment for the germination of zoospores, which easily infect the sensitive tissues of young roots.

Sharp temperature fluctuations that weaken the immune system of crops also facilitate the rapid penetration of the mycelium into the plant tissues.

The lack of crop rotation and the accumulation of plant debris in humid conditions help preserve the infectious reserve in the soil for many years.

The harmfulness of Phytophthora uliginosa lies in the destruction of the root system, which leads to a disruption of nutrient and water transport within the plant.

Infected plants exhibit gradual wilting, starting from the lower leaves and spreading rapidly throughout the entire plant structure.

The root collar often turns brown and undergoes necrotic decay, which ultimately leads to the death of the plant.

The disease significantly reduces crop productivity, and in cases of severe infestation, leads to total crop loss or mass mortality in plantations.

Infection by this oomycete makes plants extremely vulnerable to secondary infections, complicating diagnosis and effective treatment of the fields.

The key method of prevention is improving field drainage and preventing the accumulation of excess water in the root zone of crops.

Strict crop rotation should be followed, avoiding the replanting of susceptible crops on infested sites for at least 3 to 5 years.

Using healthy planting material and performing soil disinfection before planting significantly reduces the risk of primary infection.

In the event of infection hotspots, it is recommended to remove the diseased plants along with the surrounding soil and destroy them outside the field.

• Regular soil cultivation to improve aeration
• Application of systemic fungicides effective against oomycetes
• Balanced fertilization to strengthen plant immunity
• Monitoring of groundwater levels in agricultural plots