Extension training is intended to increase the efficiency and performance of the human resource that acts responsibly in a society based on a communication interaction with knowledge sources. The main objective of this study was to assess the effect of training farmers on banana production value addition among smallholder farmers in Meru and Tharaka–Nithi Counties. The study adopted a pragmatic paradigm and a cross-sectional survey design and sampled 370 and 30 farmers proportionately obtained from 269,499 and 19,303 smallholder banana farmers in Meru and Tharaka-Nithi Counties, respectively. Structured and semi-structured questionnaires were used to collect primary data from the respondents. Secondary data were obtained from official extension and production records in the two Counties as well as related literature. Data were analysed using descriptive statistics to determine frequencies, percentages and means. Regression analysis was conducted to examine relationships between the study variables

Keywords: Extension Training, Banana Value Addition, Small Holder Farmers.