Which pathogen is responsible for impacting the strawberries’ crown and stems?

The pathogen responsible for impacting the crowns and stems of strawberries is Phytophthora cactorum. This pathogen is a type of water mold and is well-known for causing serious diseases in various plants, particularly in strawberry crops. It thrives in conditions with poor drainage and can lead to crown rot, which is particularly detrimental to the plant as it affects the lower parts that are crucial for nutrient uptake and growth.

Phytophthora cactorum infects the crown and stems, leading to wilting, yellowing of leaves, and ultimately plant decline. Effective management strategies often include promoting well-drained soils, practicing crop rotation, and using resistant cultivars when available to help mitigate the impact of this pathogen.

Understanding this specific relationship between the pathogen and the symptoms it causes is essential for managing strawberry health effectively. The other options listed are associated with different types of plant diseases or conditions, impacting various other parts of the plants or other types of plants entirely.