Center for Biotechnology and Microbiology, University of Swat, Pakistan
Onion is an important vegetable and a source of income for formers inDistrict Swat, Pakistan. However, the crop is attacked by several pathogensi.e. fungi, bacteria, viruses and nematodes. Therefore, a study was carriedout for estimation of fungal diseases of onion crop in district Swat. Withinthis study about 50 samples of diseased onion crop were collected from 17different regions of District Swat. The most prevalent fungal borne oniondiseases were black mold (38%), onion rust (32%), Blue Mold Rot (10%) andseedling. Fungal species were consistently isolated from all infectedsamples. In which Aspergillus was isolated from 82% samples, Puccinia alliwas from 70%, Alternaria porri from 52%, Fuserium spp from 42%Penicillium spp from 40%, Peronospora destructor from 35%, Pyhtaiumfrom 23% and Rhizoctonia solani from 18% of samples. These fungal speciesconsistently isolated and cultured from diseased onion plant of differentfields in Swat.
Keywords Onion crop, Fungal diseases, Aspergillus