“…From our previous knowledge and studies, an increase in the number of plants per unit area led to an increase in relative humidity (as a biotic factor) which play an important role in the development of purple blotch disease. These confirmed and supported with Suheri and Price (2001) on leeks, Ghebrial andKenawy (2018) on basal, andTho et al, (2019) and Islam et al (2020) on onion. Generally, increasing density numbers of the garlic plants gradually increased leaf fungi with significant differences.…”