Maharashtra is a traditional state of tasar silk production. The productivity of the state shows that the cocoons yield is hovering around 25-30 cocoons per dfls which might be due to lack of skills and training about the recommended package of practices. Thus, the investigation of impact of training on knowledge, adoption and rearing performance was undertaken with a random sample of 120 tasar silkworm rearers of Maharashtra. The study found that there was a significant impact on knowledge gain and adoption level (p<0.05) post training with the average difference of 34.30 per cent and 27.40 per cent, respectively. As far as the rearing performance was concerned, the hatching percentage and effective rate of rearing showed an improvement of 17.32 per cent and 36.66 per cent, respectively; whereas cocoon yield was improved by 1179 cocoons per 100 dfls. Similarly the annual income of tasar silkworm rearers was improved by Rs.2358/-per 100 dfls. The 't' test of significance showed that there was significant improvement in the hatching percentage, effective rate of rearing, cocoon yield per 100 dfls and annual income per 100 dfls (p<0.05) post training. Thus, study recommend that the frequent training programs about the improved tasar rearing technologies should be organized to achieve the human resource development objective of the state which in turn will help in expanding the Tasar silk industry in state of Maharashtra and in India as a whole.