An Investigation on Soil Mycoflora of Different Crop Fields at Narasannapeta Mandal, Srikakulam District

Soil samples were collected based on different crop fields, during the month of January 2011 to November 2011 at Narasannapeta region of Srikakulam District. During the investigation period 232 fungal colonies were observed. The maximum fungal species belongs to Deuteromycotina (200 colonies) and Zygomycotina (11 colonies) and 21 colonies of unknown were observed. Culture media namely, Potato Dextrose Agar (PDA) Czapek , s Dox Agar(CZA) and Sabouraud’s Dextrose Agar (SA) supplemented with 1% Streptomycin was used as nutrient media for the growth and sporulation of soil fungi. The Present investigation was conducted to find out the fungal diversity in eight different crop fields such as Sunflower, Sesame, Capsicum, Rice, Green gram, Sugarcane, Ground nut and Black gram. The colonies of Aspergillus and Penicillium were predominant in all soil samples of crop fields. Among the isolates, Aspergillus niger, Aspergillus flavus, Aspergillus fumigatus, Aspergillus nidulans, Aspergillus terreus, Penicillium chrysogenum, Penicillium frequentans, Penicillium Funiculosum, Alternaria alternata, Curvularia lunata, Trichoderma viride, Rhizopus stolonifer were authentically characteraized and the percentile contribution of these isolates was statically analyzed.