Abstract
A survey of banana was conducted to study the occurrence and distribution of plant parasitic nematodes. The samples of soil and banana plants showing retarded growth were collected from three fields of Nasimabad (Khisano Mori), Tando Allah Yar and Mirpurkhas. The nematodes isolated from the roots and soil samples showed the presence of seven genera of plant parasitic nematodes, Hoplolaimus columbus, Belonolaimus longicaudatus, Helicotylenchus dihystera, Meloidogyne incognita, Xiphinema brevicolle, Longidorus africanus and Trichodorus christiei. The maximum population densities (M. P. D %) and maximum frequency occurrence (M. F. O %) and prominence values (P. V %) were calculated for each nematode genus. The M. P. D %, M. F. O % and P. V % of H. columbus (lance nematode), B. longicaudatus (sting nematode), M. incognita (root-knot nematode) and Heli. dihystera (spiral nematode) were higher than those of other nematodes. The occurrence of these nematodes in relatively high population suggests their potential role in reducing banana production.
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