Neopestalotiopsis iberica

Neopestalotiopsis iberica is a pathogenic fungus that serves as the causal agent of a dangerous disease affecting primarily berry crops, specifically strawberries. Belonging to the family Amphisphaeriaceae, this pathogen can cause severe physiological disturbances, leading to decreased yields and the potential loss of planting stock.

The main crops at risk of infection by this pathogen include garden strawberries. In recent years, this species has become a significant problem for nurseries and commercial plantations, as it is transmitted through infected plant material and can persist for extended periods in plant debris or the soil.

Symptoms of infection include the appearance of circular spots on leaves, often surrounded by a characteristic brown or reddish margin. Over time, fungal sporulation develops in the centers of these spots, appearing as minute black dots. In severe cases, not only the leaves are affected but also the petioles and the crown, leading to wilting and necrosis of entire plants.

The development and spread of the pathogen are directly dependent on climatic conditions. High humidity, frequent rainfall, and moderately warm temperatures promote intense spore germination and their dispersal via wind or water splashes. Poor agricultural practices, excessive irrigation, and inadequate ventilation in greenhouses create an ideal environment for disease outbreaks.

The economic impact of Neopestalotiopsis iberica lies in the significant reduction of the plant's photosynthetic capacity, which weakens the bushes and degrades the quality of the marketable fruit. Under conditions of heavy infestation, crop losses can reach critical levels, necessitating rapid intervention to contain the source of infection.

Protection measures involve a holistic approach based on the use of healthy, certified planting material. Effective prevention strategies include:

• Implementing crop rotation and ensuring proper spacing during planting to enhance airflow.
• Removing and destroying all plant debris affected by the disease.
• Regularly disinfecting agricultural tools and equipment.
• Applying broad-spectrum fungicides upon the appearance of the first symptoms.