Rice yields in Kenya remain very low due to several constraints with rice yellow mottle disease (RYMD) caused by Rice Yellow Mottle Virus (RYMV) being the greatest challenge. However, the distribution pattern and diversity of the virus still remain largely unknown and hence hindrance in designing appropriate interventions. A study was conducted to determine the occurrence and distribution of RYMV in rice growing areas of western Kenya. A survey was conducted in rice growing schemes and farms in Kakamega, Busia, Siaya, Homa Bay and Kisumu Counties in July 2015 and June 2016. Leaf samples were collected from symptomatic and asymptomatic plants. Visual RYMD incidence ranged between 2-100%. Sero
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