CAUTION: February 2, 2017: Risk of wheat stem rust in Mediterranean Basin in the forthcoming 2017 crop season following outbreaks on Sicily in 2016

Results of extensive lab tests of samples of stem rust have shown that the 2016 stem rust epidemics in Sicily were caused by a new, highly virulent variant of race TTTTF. The samples were collected during serious and unusual outbreaks … Continue reading

Feb 1st, 2016: Latest version of Mehtaensis newsletter published by Indian Inst of Wheat and Barley Research, Flowerdale, Shimla: Comprehensive updated information on rusts in India and South Asia

The latest version of the Mehtaensis newsletter (a 6 monthly newsletter named after Prof. K.C. Mehta) has just been published by the IIWBR, Regional Station, Flowerdale, Shimla. Compiled and edited by Dr. S.C. Bhardwaj, O.P. Gangwar, Pramod Prasad and Hanif … Continue reading

Jan 12, 2016: Molecular diagnostics indicate presence of race TKTTF (“Digalu” race) in Kenya

Analysis of dead, single pustule stem rust pathogen samples (D-samples) using molecular diagnostic SNP assay at the USDA-ARS Cereals Disease Lab, Minnesota has detected a race TKTTF (“Digalu” race) genotype in Kenya for the first time. Five samples from 2014 … Continue reading

Dec 20, 2015: Five new variants of Ug99 confirmed from 2013/2014 samples in East Africa

Combined results from race analysis undertaken at several different labs indicate that five new variants in the Ug99 lineage were detected from samples collected in East Africa during 2013 or 2014. Probably most significant were the two new SrTmp variants … Continue reading

Sep 2, 2015: Emergence and spread of virulence to SrTmp in the Ug99 race group in Africa – note published in Plant Disease

Mehran Patpour (Global Rust Reference Center in Denmark) and co-authors have just published details of the emergence and spread of virulence to SrTmp in the Ug99 race group in Africa. The note is now available as a First Look in … Continue reading

9 April 2015: CAUTION – Increased vigilance needed in eastern Mediterranean countries following confirmation of Ug99 (race TTKSK) in Egypt

Following the confirmed detection of Ug99 (race TTKSK) in Egypt in 2014 (BGRI special newsletter report April 2015) increased vigilance is needed for stem rust in the eastern Mediterranean. Although no confirmed reports of race TTKSK have been obtained from … Continue reading

Alert – Jan 9, 2015: Summary of Ethiopia 2014/15 rust situation. Re-current, localized stem rust epidemics caused by race TKTTF (“Digalu” race) in Ethiopia. Extreme caution and vigilance needed in East Africa

Following the localized stem rust epidemics in Ethiopia on the cultivar “Digalu” in 2013/14 (see report 23rd Dec 2013); continued, severe stem rust outbreaks have been observed in the 2014/15 main season. Once again the popular cultivar “Digalu” has been … Continue reading