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

October 27, 2014: Kenya 2014 Rust Surveys- High Level of stem rust; Yellow rust and Leaf rust at low levels

Rust surveys were carried out in all the four key wheat growing regions of Kenya: South Rift, Mount Kenya region, Central Rift and North Rift. The surveys were conducted by experts from the Kenyan Agricultural Research Institution (KARI). A total … Continue reading

Oct 10, 2013: Survey summary, Kenya 2013 – Stem rust predominates, but resistant cultivar “Kenya Robin” gaining popularity

During 2013 (Jan-Sept.) staff from KARI, Njoro, led by Ruth Wanyera, carried out extensive annual rust surveys throughout the Kenyan wheat growing areas. A total of 333 fields were surveyed for rusts. stem rust continues to be the predominant disease … Continue reading

Kenya Yellow Rust Risk Map

These maps were created using all years of survey data (2007-2011). They illustrate hot-spots of disease severity. The following two approaches were taken to create the maps: Map 1. Geo-statistical Hot-spots:The Getis-Ord Gi* statistic was calculated on the survey data … Continue reading

July 2, 2012: Several new rust resistant varieties released in Ethiopia and Kenya

Breeding for rust resistance in East Africa is moving forward at a rapid pace. National research programs in both Ethiopia and Kenya have recently announced the formal release of several new rust resistant varieties in both countries. The Ethiopian Institute … Continue reading

Kenya Virulence Graph

The Virulence by Country tool, developed by the University of Aarhus Denmark, displays the frequency of virulence to specific combinations of Sr genes in analysed samples over time for a selected country. Selection of any Ug99 lineage race or specific … Continue reading

Kenya Stem Rust Pathotypes

Predominant Pathotype(s): TTKST, PTKST – Both Ug99 lineage races, combined virulence to Sr31 and Sr24 Effective Sr Genes: Sr2, 13, 14, 22, 25, 26, 27, 28, 29, 32, 33, 35, 37, 39, 40, 44, 1A.1R, Tmp … Continue reading