The isolates showing antisporulant activity in the dual culture
tests were evaluated for their efficacy to inhibit the growth of A.
tubingensis on detached berries (Fig. 2). Results presented in
Table 3 show that 28 out of 33 isolates were effective (P = 0.05)
in reducing the growth of A. tubingensis. Biocontrol activity of the
various isolates in reducing A. tubingensis growth ranged between
13% and 96% compared to fungal growth on control berries
(Table 3). In particular, 25 A. pullulans isolates exhibited a high
degree of inhibition of the fungal growth on grape berries ranging
between 17% and 96% compared to the control treatment. None of
the C. zeylanoides isolates was able to reduce fungal growth
whereas one C. sake isolate exhibited a low degree of fungal inhibition
(13%). The two C. magnus isolates showed a moderate inhibition
effect (38% and 62%) on fungal growth.