Fungal community and chemical analyses of agricultural soil in Sohag governorate, Upper Egypt

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Botany and Microbiology Department, Faculty of Science, Sohag University, Sohag 82524, Egypt.

Abstract

The investigation was conducted to find out the fungal diversity, and chemical characteristics of agricultural soils in Sohag governorate, Upper Egypt. Examined soils have mean values of 1.66% organic matter, 0.03% total dissolved salts, 7.02% pH value and 12.8 % moisture content. All agricultural soil samples proved to be contaminated by filamentous fungi. A total of 87 fungal species + 8 varieties of 27 genera were isolated and identified from fifty soil samples on Czapek’s-glucose and potato-dextrose agar media using dilution plate method. The gross fungal count on Czapek’s-glucose was higher 1409649 CFU/g of dry soil, 25 genera & 86 species + 8 species-varieties) than 1212310 CFU/g dry soil, 19 genera & 66 + 6 on potato-dextrose agar media. Aspergillus was the most dominant genus on both media (100 % & 94 % of the samples tested), respectively followed by Mucor, Trichoderma, Fusarium and Talaromyces. On the other hand, Chaetomium herbarum, Cunninghamella spp., Humicola spp., Rhizopus stolonifer and Stachybotrys cartarum appeared on Czapek’s-glucose and completely disappeared on PDA, while Cephalosporium trigonosporum and Rhodtorula mucillignosa appeared in rare on PDA and completely missed on Czapek’s-glucose. Finally, microorganisms especially fungi played an important role in fertility of agricultural soils in this region of Upper Egypt.

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