Fungal contamination of the white agricultural fungus Agaricus bisporus taken from the local markets of Baquba city

Abstract

The current study aimed to detect fungi contamination in agricultural mushroom samples Agaricus bisporus which was taken from some areas of Baqubah district in Diyala governorate. It was shown that all the samples were contaminated 100% , total colony formation ranged 3.264×10-3 to 5.596 ×10-3 , the results recorded 253 fungal isolates . The Canaan region recorded the highest number of fungal isolates, which was 84 isolates , followed by the regions of Buhruz, Khan Bani Saad and Baqubah, which were 66, 54 and 49 fungal isolates, in that order. The results of the study also showed that the fungal isolates that were isolated from the white agricultural fungus belonged to 3 fungal genera, called by Aspergillus, Rhizopus and Penicilium. The genus Aspergillus was superior in the number of species belonging to it since 6 species were recorded at a rate of 75% compared to the genus Rhizopus for which one species was recordedonly Rhizopus spp. The genus Penicillium recorded one species with a rate of 12.5 % each. The total species that were isolated and diagnosed were 8 fungal species: Aspergillus niger, A. parasiticus, A. nidulans, A. tamarii ,A. fumigatus, A.ochraceus, , Rizopus spp. and Penicillium verrucosum.