Empirical study conducted on extension professionals of 19 KVKs under administrative control of CCSHAU Hisar indicated that overall knowledge of extension scientists was found low to moderate which indicate that they were not completely abreast of implications of climate change in agriculture. Vast majority had good knowledge in relation to impact of temperature on crop growth and effect on physio-chemical system of plant. Majority was found well aware of the fact that rise in soil temperature increases rate of volatilization and denitrification, affects the soil microbial activities and soil temperature affects the soil biomass/organic carbon. Vast majority was found familiar with aspects such as water pollution affects physio-chemical activities in plant and also creates nutrient deficiency in plant and it leads to suppress the soil microbial activities. Knowledge of impact of climate change on biodiversity indicated that they had knowledge of extinction/ near extinction of certain plants/ fruits/trees/animals/birds species and emergence of new insect-pests/ diseases whereas only 56.00 percent of them had knowledge that climate change have resulted in suitability for growth of certain new crop plants/ fruits/trees/animals/birds species. Findings further revealed that extension management based upon technology to mitigate the effects of climate change included adoption of zero tillage technology, water conservation technology in changed climate, laser land leveling technology for smooth irrigation and water saving in area, adoption of poly house to grow vegetable production in adverse climate and weather based agro-advisory services. Agro-forestry to lower the effect of climate change followed by conservation of natural resources to lower the effect of climate change, rainwater harvesting for using it in adverse climate condition like drought, promote crop and livestock diversification and bio-agents to control insect/pest were the major recommended mitigation management practices for natural resources. While they recommended the mitigation management based on agronomic practices like adjustment of timings of farm operations to reduce the risk of crop damage, growing crop according to local climatic condition and adoption of crop rotation to increase the production in changed climate and among policy based mitigation management included motivating the farmers to attend krishi melas/ agro-exhibitions, provision of crop insurance and credit facility. Necessary efforts should be made to build the capacity of these extension professionals on impact of climate change especially in harnessing the increased CO2 level and C- sequestration processes and climate resilient species of plants and animal for promotion of remunerative agriculture and enabling them to disseminate the coping up mechanism to grass root by additional provision of government facilities as well as supportive policy .