M. Mostafa et al., SEARCH FOR BIOLOGICAL-CONTROL OF BARLEY N ET BLOTCH BY THE PREVENTIVEUSE OF A WEAKLY AGGRESSIVE STRAIN OF DRECHSLERA-TERES, Cryptogamie. Mycologie, 14(3), 1993, pp. 229-238
The preventive use of a weakly aggressive strain against D. teres. the
causal agent of barley net blotch, showed that the application of the
mycelial suspension or of crude filtrate on the leaf lamina subsequen
tly induced decreased attack by agressive strain, is reflected by the
decreased number of infection sites and by the decreased size of necro
ses. Barley lamina mesophyll in the presence of the toxic filtrat of t
he hypoagressive strain, which was followed by inoculation with an agg
ressive strain, was little allowed with respect to that of the control
plants.