Abstract: Detailed soil survey of Mycorrhiza fungi distribution of 6 soil types of southwestern Nigeria was carried out at the valley bottom of Faculty of Agriculture and Forestry, University of Ibadan to investigate the relationship between different soil types and how it affect Mycorrhizal distribution. Sampling points were determined using a rigid grid survey method. Transect were cut at every 20 m interval across the field, while samples were collected at every 10 m at both topsoil (0-15 cm) and subsoil (15-30 cm). The whole landscape was classified into 6 series namely: Apomu (series I), Jago (series II), Matako (series III), Ikire (series IV), Oshun (series V) and Adio (series VI). A total of 186 samples were collected for chemical, physical and Mycorrhiza extraction, identification and count at the laboratory. Mycorrhiza distribution was found to be highest at topsoil in all the soil series than at the subsoil, except on soil series I where the subsoil population was higher. Soil series VI has the greatest population of Mycorrhiza in both the topsoil and subsoil. Thus, soil types do not significantly affect the population of Mycorrhiza fungi.
O.O. Olatunji , G.E. Akinbola , G.O. Oyediran , B.A. Lawal , W.B. Akanbi , J.C. Obi and F.M. Owoade , 2008. Mycorrhiza Fungi Distribution in Six Different Soil Types of Southwestern Nigeria. Research Journal of Agronomy, 2: 52-55.