Which disease is caused by Alternaria dauci and affects carrots?

The disease caused by Alternaria dauci that affects carrots is indeed recognized as Alternaria Leaf Blight. This fungal disease primarily targets the leaves of carrot plants, leading to characteristic symptoms such as dark, circular lesions and premature leaf drop. This not only impacts the overall health of the plant but can also significantly reduce the quality and yield of the carrot crop.

Understanding the biology of Alternaria dauci is essential for effective management and control strategies, as this pathogen can thrive in various conditions, often exacerbated by high humidity and temperature fluctuations. This knowledge guides growers in implementing practices such as crop rotation, proper irrigation techniques, and timely application of fungicides to mitigate the disease’s impact on their harvest.

The other options presented are associated with different pests or conditions that do not involve Alternaria dauci or its effects on carrots, which contextualizes the correct answer within the broader spectrum of plant diseases.