Abstarct: In order to evaluation of seed priming an experiment was carried out as factorial booed on random completely block design (RCBD) with four Replication in Agricultural Research Station of Shahrood university of Technology, During 2010-2011, The treatments included organic manure levels (vermicompost, trap manure, non- Fertilization ) and seed priming (Prime and non-prime) and corn cultivars (SC260, DC370). The result showed that seed yield, biological yield, harvest index, Number of row per ear, Number of seed per row, 1000- seed weight, ear length, ear diameter, leaf numerous, height plant, leaf area index, crop growth rate and net assimilation rate for primed SC260 cultivar was most. organic manure levels affect yield and yield component significantly. And vermicompost produced must yield. The interaction between organic manure and cultivar, organic manure and priming was significant for all of traits but interaction between cultivar and seed priming was affected significantly except for 1000-seed weight, length and diameter of ear. Also, interaction between cultivar and organic manure was yield components of cultivars and SC260 was better than DC370.