Biological control of late blight (Phytophthora infestans (Mont.) de Bary) in tomatoes with mycoextracts from Fusarium culmorum and Fusarium graminearum
Cărăbet, A.F.; Grozea, I.; Chirita, R.; Badea, A.M.
Communications in Agricultural and Applied Biological Sciences 73(2): 257-262
2008
ISSN/ISBN: 1379-1176 PMID: 19226762 Document Number: 627509
Following a screening completed over several species of fungus for establishing the efficiency of the extracts produced from them, against agent causing the late blight--Phytophthora infestans--two species of fungus were selected--Fusarium graminearum and Fusarium culmorum--in order to employ them and their strains with different virulence in the pathosystem fungi/Lycopersicumm esculentum. The utilized extracts are based on ethanol and obtained from mycelium and culture filtrate. Extract was applied 2 and respectively 7 days before the artificial inoculation, realized on the detached tomato's leaves and maintained at 17 degrees C and air relative humidity of 100%. The evaluation was done 6 days after the inoculation. The results show that for the treatment applied 2 days before inoculation the intensity of the attack was reduced by aprox. 60% compared with the control but for the inoculation at 7 days after the treatment, the intensity was not diminished.