Aspergillus niger: The fungal culture Aspergillus niger was screened from different soil samples of local paddy
and groundnut fields and identified with the help of manuals like “Dermataceous fungi” by Barnett (20), “Text
book of Mycology” by Alexopolus (21) and “Handbook of soil fungi” by A. Nagamani, I K Kunwar and C.
Manoharachary (22).