The main objective of the study was to assess the need of training for the haor farmers on different aspects of Boro rice production practices. Twelve yield contributing production practices of rice were taken as the bases for training need assessment. A total of 80 Boro rice farmers of Tahirpur upazila (administrative unit) of Sunamganj district were randomly selected and data were collected from them before and after training imparted using well-structured interview schedule during July – September, 2015 and May – July, 2016. The result revealed that haor farmers had gaps in all the 12 practices but significant gaps were identified in respect of the application of gypsum (96%), TSP (39%) and MoP (32%) fertilizers in the main field and urea fertilizer in the seed bed (95%). However, all gaps were reduced to a significant level from 30.67% to 13.00% through offering training. Training increased not only the resources use efficiency of the farmers but also the yield of BRRI dhan28 and BRRI dhan29 with an average of 17%.