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Potato (Solanum tuberosum L.) popularly known as ‘The king of vegetables’, has emerged as fourth most important food crop in India after rice, wheat and maize. In the year 2002- 2003, the production was 25 million tonnes while it was 5 million tonnes during 1970. India ranks 4th in area and it is the 3rd largest country in world in production of potato after China and Russian Federation. | Effect of nitrogen growth and yield of potato (Solanum tuberosum L.)