Survey updates – East Africa Kenya: stem rust incidence and severity is very high in Kenya. Recent surveys (June 2010) by KARI,Njoro staff in the Narok region recorded stem rust in 80% of the 109 fields surveyed. Stem rust severity … Continue reading
Tag Archives: stem rust
Surveys were undertaken in Azerbaijan (May/June 2010 – 38 fields), Lebanon (May 2010 – 16 fields) and Uzbekistan (May 2010 – 56 fields). In each country, isolated occurrences of stem rust were detected in farmer’s fields. In Lebanon, occurrence of … Continue reading
Extensive wheat rust surveys were undertaken throughout the wheat growing regions of Iraq during April to June 2010. A total of 218 sites were surveyed using standard BGRI survey methodology. Conditions in 2010 were extremely suitable for rust development. Yellow … Continue reading
Confirmed results from race analysis completed in the 2009/10 season are now available. The confirmed spread of Ug99 variants carrying combined Sr31 + Sr24 virulence in Africa continues, along with the continued predominance of these variants in Kenya. The absence … Continue reading
A stem rust sample collected from near Greytown, KwaZulu-Natal, South Africa in Nov. 2009 has been confirmed to be Ug99 lineage race PTKST. Samples from another site – Cedara, KwaZulu-Natal, collected in Dec. 2009 showed similar virulence profiles. The confirmed … Continue reading
Field surveys undertaken in the main wheat growing governorates in Iraq during March-April 2010 did not detect any stem rust. A total of 18 farmer field sites distributed throughout the country were surveyed. Stem rust was not recorded at any … Continue reading
Extensive field surveys undertaken in Sudan (Feb 2010) and Egypt (Feb-Apr 2010) revealed a very low incidence of stem rust in farmers fields. Stem rust was not observed on-farm in Sudan and only trace amounts were recorded at three locations … Continue reading
stem rust samples collected near Harare in Sept 2009 have been confirmed as race TTKSF, the presumed progenitor of Ug99. Analysis undertaken by the University of the Free State, South Africa and the USDA-ARS, Cereals Disease Lab, Minnesota, USA confirmed … Continue reading
Ethiopia: Results of the field surveys undertaken in Sep-Dec 2009 were received. Very comprehensive surveys were undertaken covering virtually all the main wheat growing areas. A total of 877 locations were surveyed. Thirty-five percent of the locations were infected by … Continue reading
Additional reports of wheat stem rust were received from several African countries. In August, wheat stem rust was reported to be widespread in Tanzania. Wheat growing areas in Northern provinces and the Southern highlands both reported the presence of wheat … Continue reading