An economic study, intended to know the impact of NHM on temporal changes in area, production of horticultural crops, performances of different components under NHM and constraints faced by sample beneficiaries, study was conducted in Karnataka state using primary and secondary data during the year 2013-14. Major findings of the study reveals that, significant increase in area, production and yield of horticultural crops achieved after implementation of the NHM, components such as area coverage and IPM have incurred highest expenditure over the years, but full potential could not be tapped due to severe constraints in infrastructural bottlenecks, marketing facilities and post-harvest management etc. So efforts are needed to improve the conditions of infrastructural facilities by spending higher expenditure on those items.