Black mold

Black mold otherwise known as “Aspergillus niger” often occurs on fruits that have become moist on the surface or broken; or it may occur on other products occasionally. Aspergillus niger is the thermophilic organism; hence it occurs most frequently in hot regions.

It does not produce a moldy taste or odor; it is much less prevalent and is easier to control than is the blue mold. This disease is most prevalent in subtropical and tropical production areas where high temperatures favor its development. While black mold can cause some problem in the field most losses occur in storage.

The spore of the organism seem to be present everywhere, but they are able to infect fruit such as grapes only when there are skin breaks or punctures, or when the ripening grapes are wet – as, by rain or sprinkler irrigation during maturing. 

 

This disease causes unsightly, black, dusty fungal growth on and between the bulb scales. The entire surface of the bulb may be turned black in several cases, and a bulb rot may follow.
Black mold