In 2005, disease severity was higher than in 2004, reaching
higher values of affected leaf surface (3% versus 0.3%, respectively)
in controls (Fig. 2), with higher disease severity and an earlier
detection of symptoms, according to higher values of AUDPC. In
these conditions, each strain individually protected rice against
rice blast, but to a lower extent than in 2004, when disease severity
was low (50% of protection in 2004 versus 15% in 2005). However,
the combination of both strains protected to the same extent in