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Intensive agricultural practices coupled with better input services has resulted in exponential growth in crop production in India, particularly in northern region states of the country like Haryana. Though self-sufficiency has been achieved, it was accompanied by negative environmental effects such as serious non-target agricultural pollution. Implementation of eco-friendly smart agricultural practices can effectively overcome such pollution. However, the major constraints in assent and adoption of these practices are not limited only to associate risks and potential benefits, but farmers' attitudes towards knowledge of scientifically validated practices too came into picture. In the presented study, opinions of 180 respondents were explored in personal interviews using a three-point continuum scale for the major constraints (very serious, serious and not so serious) and scores were given as 3, 2 and 1, respectively. Weighted mean score (WMS), rank orders, standard deviation, correlation and regression were computed for the better understanding. Results concluded that major constraints for smart agricultural practices in their assent were non-familiarization with improved practices (WMS = 2.46), procedure of registration for weather forecasting (2.37), conservation agriculture is more labour intensive (2.24), lack of training to access e-information (2.39), Climate change effects the seasonal temperature and rainfall (2.76), Slow result of eco- friendly practices (2.54), high initial cost of protected structure (2.52), and lack of proper training for agro-processing and value addition practices (2.42). The results also indicated that 11 independent variables which were included in the study jointly contributed 37.00% variations in the constraints faced by the farmers in adoption of smart agricultural practices.