Karnal is the 54th largest Hindi speaking city of India with a total population of 0.28 million. Major employment in Karnal district is in Medicine, Government, Agriculture and in Dairy industry. Karnal has 50% industry and other workers, 47% Agriculture workers and 3% Household workers. Karnal is a good agricultural belt because it is a part of the Ganga Sindus (Indo - Gangetic) plains. Major River in Karnal district is Yamuna. Karnal district is known all over the world for production of Rice, Wheat and Milk. Important agricultural research Institutions like National Dairy Research Institute (NDRI), Central Soil Salinity Research Institute (CSSRI), and Wheat Research Directorate, National Bureau of Animal Genetics Resources, Sugarcane Breeding Institute etc. are the main features of Karnal district. The city of Karnal said to have been found by King Karna of Mahabharata epic. In the year 1739 battle between Nadir Shah and Muhammad shah took place in Karnal. Karnal district was one of the districts of Punjab state. It later became one of the seven districts of Haryana state at the time of its inception on 1 November 1966.