powdery mildew is one of the most important disease concerns of tomato production in different regions of the world, which is caused by different species of erysiphales. the most important causal agents of which are leveillula taurica and oidium neolycopersici. in the present study tomato farms in qazvin province were surveyed and tomato leaves with powdery mildew symptoms were collected. after...

the distribution of phytophthora parsiana a high-temperature tolerant newly described species was studied in southern iran and examined its host range in woody perennial plant species in greenhouse condition under high inoculum potential. among different plant species examined, almonds were highly susceptible by different isolates. from 24 woody plants inoculated, the disease severity in descen...