How to recognize and combat alternariosis in table beets

Alternaria tenuis is a phytopathogenic fungus that affects a variety of crops, including beet. This fungus produces conidial spores that are dispersed mainly by wind and rain. These spores can remain viable in soil and crop residues for long periods. Infection begins when spores germinate in favorable conditions of high humidity and moderate temperatures, penetrating plant tissues through stomata or wounds. The fungus develops a mycelium that spreads between the host's cells, producing toxins that break down the plant's tissues. As the infection progresses, the fungus continues to produce spores that are released and dispersed to initiate new infections.