The communication behavior of farmers significantly influences their adoption of agricultural innovations and sustainable practices. This study explores the communication channels and behavioral dynamics of rapeseed-mustard growers in Dhemaji district, Assam, where productivity disparities persist despite the crop's economic significance. A purposive sampling method selected 120 respondents across three blocks, utilizing a pretested interview schedule for data collection. Findings reveal that informal and local community sources, such as progressive farmers (60% regular use) and input dealers (54.17% regular use), are the most preferred channels due to their accessibility, trustworthiness, and practical advice. Government and institutional sources, including extension officers (40% regular use), are valued for their credibility but face challenges like limited reach and awareness. Extension programs such as Kisan Melas (38.34% regular use) and field demonstrations (37.5% regular use) attract moderate participation, emphasizing their role in hands-on learning. Mass media sources like television (41.68% regular use) and social media platforms (46.68% regular use) provide accessible and timely information but are hindered by digital literacy barriers, particularly for emerging channels like mobile apps (21.67% regular use) and the internet (26.67% regular use). The study underscores the need to enhance farmer-extension linkages, improve awareness of digital tools, and customize mass media content to ensure relevance. These insights can inform farmer-centric agricultural policies and communication strategies.