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A field experiment was conducted at Indian Institute of Rice Research farm, Rajendranagar, during the rainy (kharif) seasons of 2012 and 2014 to evaluate the association between leaf traits of top three leaves with grain yield. Among the top three leaves the length of 3rd leaf is more compared to 2nd and 1st leaf, whereas the width and the rate of photosynthesis was more in case of flag leaf compared...