Publishing Date: 2007

E-ISSN: 0255-7576

Volume 25 Issue 2


A survey of nematodes associated with onion in Hyderabad district, Sindh, Pakistan was conducted in 2005 season. Ten localities were surveyed and samples of rhizosphere soil were collected for determination of plant parasitic nematodes associated with the crop. In all five style bearing nematodes were recorded. The population densities were measured and highest density was that of Ditylenchus dipsaci followed byMeloidogyne javanica. A cluster analysis of nematode data of localities was performed which yielded two groups of localities. Group one was characterized by the presence of species Filenchus filiformis; Ditylenchus dipsaci and Meloidogyne javanica while the second group was comprised of Xiphinema sp., F. filiformis, M. javanica and D. dipsaci.