The tolerance of 20 winter cereals, to the dryland root rot complex (Fusarium pseudograminearum, F. culmorum and Bipolaris sorokinana) was investigated for 3 consecutive years through inoculated field trials in Cumra, Turkey. The data clearly indicate significant yield loss is caused by root pathogens with an average across years and varieties of 26%, but also a very high degree of variation between years, with losses of 15, 35 and 27% for the 3 years of the trial. Average and annual % yield losses (yr1, yr2, and yr3) for the different cereal groups were 24 (14, 32, 23) for the 12 bread wheats, 42 (28, 47, 49) for the 5 durum wheats, 12 (0, 31, 3) for the 2 barleys and 18 (17, 14, 23) for the 1 triticale. The degree of intolerance is greatest with durum wheat > bread wheat > triticale > barley. Similarly the Root Rot Severity score for the pathogen complex was found to relate to the level of intolerance. This study clearly demonstrates the importance of conducting yield loss studies over several years and demonstrates that dryland root rot is causing significant yield losses in Turkey. Options for control of these pathogens should be investigated.

Global Wheat Program

Text in English

0503|AL-Wheat Program

INT2410