Physicochemical Characterization and Papulation Dynamics of Mycoflora in Infected Rhizosphere Soil of Onion White Rot caused by Sclerotium cepivorum

The present study describes physicochemical characterization and rhizosphere soil mycoflora in the field of onion white rot caused by Sclerotium cepivorum. Soil fungi in onion infected field need to improve knowledge of diversity of fungi associated with white rot of onion. Infected rhizosphere soil, sixteen physicochemical parameters were analysed. It founds alkaline pH but EC, N, Ca, Na, B, S and Mo contents were found least whereas OC, P, K, Zn and Cu high in infected soil as compared to standard range. Due to infected soil, chemical analysis is also hanged. Fifteen samples of soil were carried out during June- Sept and Dec-Feb 2017. In all the 09 genera and 10 species were observed from infected soil. Mucor, Rhizopus and Aspergillus species were found dominant. Total number of fungal species colony was found dominant in Osmanabad (OD) site. Parentage of frequency and % of abundance was found more in Rhizopus stolonifer (80% and 15.39%) respectively.