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Figure 1. Rust contaminated machinery early in the growing season, September 2017, Los Cisnes, La Carlota, Cordoba province, Argentina. Photo: Ing. Agr. Juan Pablo Ioele. Click on the photo to enlarge.

09.02.2018 |

Severe epidemics of wheat yellow rust in Argentina

In 2017, Argentina faced the worst epidemics of yellow rust since the 1930s. Based on samples collected at 22 epidemic sites in September, the Global Rust Reference Center (GRRC) has identified at least three distinct yellow rust genotypes. Two of these were identical to genotypes first detected in Europe and North Africa in 2015-16.

Photo: Cecilia Lerenius, Jordbruksverket, Sweden. Race Triticale2015 (PstS13) epidemic on triticale in Sweden 2015, variety ‘Remiko’ grown under organic conditions. PstS13 was prevalent in the 2017-epidemics in Argentina. Click on photo to enlarge.

09.02.2018 |

GRRC annual report on wheat yellow rust 2017 released

Unusual and severe epidemics of yellow rust were observed on several continents in 2017. In a number of cases, epidemic sites at different continents were inter-related by prevalence of genetically identical yellow rust genotypes and races.