Mean % frequency of occurrence ± SD    
  Iyanomo Akwete Iyanomo Akwete
  (May) (June) (September) (October)
Fungi        
A . niger 75.8 ± 11.4 44.3 ± 3.7 47.5 ± 12.4 17.9 ± 3.3
Trichoderma spp. 18.9 ± 12.8 51.1±  5.2 30.0 ± 15.3 57.6 ± 10.1
Penicillium spp. 0.0 2.2 ± 1.6 12.9 ± 11.3 7.2 ± 3.4
B. theobromae 0.8 ± 2.6 0.9 ± 0.1 1.6 ± 4.5 13.1 ± 10.7
Mucor sp. 4.5 ± 6.2 1.5 ± 3.1 8.0 ± 9.7 4.2 ± 3.2
Bacteria        
Bacillus sp. 18.4 ± 8.6 0.0 ND ND
B. cereus var mycoides 17.4 ± 8.2 0.0 ND ND
Staphylococcus sp. 64.2 ± 11.1 100.0 ND ND
ND = Not Determined
Table 2: Mean percentage frequency of occurrence of fungi and bacteria on the Rhizoplane of rubber plant at Iyanomo and Akwete plantations.