Black mould on Onion

Mouldy growth was seen in onion on peeling out the dry outer covering. On viewing through the foldscope the fungus was found to be black mould. Presence of sporangium on the sporangiophore/ conidiophore was clearly marked.


Though, onion is known to possess insecticidal, antibacterial and antifungal properties which are attributed to its sulphur containing compounds. Such an important vegetable crop is prone to several post-harvest losses due to diseases like bacterial rots, smut,neck rots, etc. which in turn reduce the shelf-life of onions.Black mould,rots and blue mould are the predominant ones which lead to storage issues in retail and wholesale market.

2 Comments Add yours

  1. Manu Prakash says:

    I did not realize that Onion has anti-bacterial peripheries. Makes a lot of sense for the resilience.

    Beautiful post – absolutely love the clarity of the black mold. I will look for the same on fresh onions.

    Keep exploring..


    1. gagandeep_SD15 says:

      Thanks sir for your motivational words.

Leave a Reply