Phomopsis on the sunflower crops in the Krasnodar region

The article presents the results of study of the Phomopsis prevalence on sunflower crops as a result of the conducted route inspections during the periods of 2005-2009 and 2011-2012 in the northern, central and southern-piedmont agroclimatic zones of the Krasnodar region. The received data show that the epiphytoty of Phomopsis, which began in 1991, is currently depressed. It is indicated by the sharp decrease of the spreading and prevalence of disease. It was determined that, of the three surveyed agroclimatic zones, the sunflower fields were affected by Phompsis most intensively in the southern-piedmont zone.