Grovesinia

Grovesinia is a fungal plant disease caused by the pathogen Grovesinia pyramidalis. It is recognized as a significant threat to various agricultural and horticultural crops, primarily due to its ability to cause rapid decay of plant tissues.

The disease affects a diverse range of host plants, including strawberries, beans, and several types of ornamental plants. The pathogen is particularly devastating when it infects plants in high-density production systems, where moisture levels remain consistently high.

Symptoms typically include water-soaked lesions that appear on leaves, stems, or fruits. As the disease progresses, these lesions expand and become covered in a white, cottony mycelium. Eventually, the fungus produces sclerotia, which are durable black structures that allow the pathogen to survive in the soil for several years.

Development and spread of Grovesinia are favored by cool to moderate temperatures and high relative humidity. The pathogen can easily proliferate in greenhouses or fields where air circulation is restricted, making environmental management a key factor in suppressing the spread of the fungus.

Effective management relies on a combination of cultural and chemical strategies. Key practices include

• Implementing strict crop rotation
• Improving air circulation through plant spacing
• Removing and destroying infected plant debris
• Applying registered fungicides during critical growth stages