A Study and Comparison of Control Methods of Anthracnose Disease in Walnut Trees of Roodbar Region

Walnut anthracnose is among the major diseases of walnut trees in qazvin province which is scattered as an epidemic disease in the recent years. this research is designed to study and comparison of control methods of anthracnose disease in walnut trees of roodbar region. after selecting the infected garden and implementing winter and spring spraying treatments, winter spraying treatment and control treatment (which was only gathering of infected leaves and fruits), we counted the infected leaves and fruits in four geographical directions and calculated the percentage of infection; and finally the results were attained after statistical analysis. winter spraying treatment with bordeaux solution and spring spraying treatment with copper-containing compounds showed the maximum effects and minimum infection of leaves and fruits. meanwhile, northward branches showed the maximum infection among all geographical directions