At harvest time, the percentages of peanuts infected by A. flavus
and A. parasiticus ranged from 2 to 18% and were not significantly
different (p>0.05) between treated and control plots (Table 1).
This result indicates that the rate of inoculum applied to soil had
no effect on subsequent infection of peanut kernels. Similar results
were obtained by Dorner and Cole (2002) and Dorner et al. (2003)
when they used nontoxigenic A. flavus/A. parasiticus inoculum in
peanut fields in USA. Among the Aspergillus section Flavi species
identified, A. flavus was themost frequently recovered from peanuts,
with isolation frequencies of 90 and 98% in control and treated plots,
respectively. This result agrees with Horn et al. (1994) and Dorner
and Horn (2007) who found that A. flavus was by far the predominant
colonizer of peanuts, even in peanuts grown in soil treated
with high levels of nontoxigenic A. parasiticus. This indicated that A.
flavus was the more aggressive species and was responsible for