Herath Mudiyanselage Sunil Jayarathne is a Statistical Officer and rice subject expert at the Hector Kobbekaduwa Agrarian Research and Training Institute (HARTI), Sri Lanka. He works on paddy production and marketing systems, rice value chains, smallholder rice farmer livelihoods and climate-smart irrigated agriculture. Over more than 20 years of field-based research, he has led farmer surveys, field data collection and analysis for national and international projects, including the Climate Smart Irrigated Agriculture Project and the Seed System Analysis of Sri Lanka. He supports evidence-based recommendations to improve rice productivity, market access and farmers’ livelihoods in Sri Lanka.