jurisdiction of Bihar Agricultural University, Sabour Bhagalpur. The KVK is working with ICAR mandates for scientific knowledge for agriculture and its allied sectors. It can be transmitted through effective extension means to the farmers. Rural women can use this knowledge to improve their livelihood. KVK’s are playing a major role across the rural economy especially for women empowerment. KVK’s role in this sector is crucial as it is ideally placed to disseminate field-tested proven technologies with appropriate modulations which addressed location specific problems and concerns on the prevailing natural and socio- economic conditions. In this study, extent of adoption of twelve selected scientific cultivation of oyster mushroom practices were measured. To measure the extent of adoption and to compare the impact of training on the extent of adoption, 75 number of respondents were selected from trained farm women and the same number of respondents were selected from surrounding area who had not been trained. Study was conducted in three different ways- firstly; all respondents were interviewed and categorized into three groups of high, medium and low category of farmers for adoption of scientific cultivation practices of oyster mushroom. Secondary, overall adoption for both categories of respondents was measured and lastly difference between the adoptions of both categories of respondents was measured in terms of adoption of different practices of mushroom cultivation. High level of adoption was seen in adopting knowledge of sanitation (80% in trained categories) and (44% in untrained categories), whereas minority of farmers were falling under medium adaptors. Majority of the respondents (45.33 % in trained category) found to be high level of adoption, while (40 % in un trained category) found to be low level of adoption for scientific cultivation of mushroom. T test found to be highly significant for all the cultivation practices, except purchase of spawn from other sources. Unavailability of fresh spawn had highly significant and positive correlation (0.324**) with overall constraints.

Keyword: Oyster mushroom; Adoption; Production; Cultivation;