Effect of Priming and Sowing Date of Seed on Growth Indices of Plant and yield and Yield Components of seed of Maize Single Cross 260 (Fajr)

To evaluate the effect of planting date and seed priming in the field on growth, yield components and yield of maize single cross 260, Experiment split plot based on randomized complete blocks with three replications in research farm located in the region of Kurdistan in the years 2013 and 2014 Dehgolan Sarab came into force. Three planting dates (10th, 20th and 30th of May) in main plots and six priming includes priming with tap water, homeopathic priming with urea, priming with zinc sulfate, priming magnetic water, priming with Aminol-Forthe and untreated seeds were placed in sub plots. The results showed that priming treatments with tap water, urea homeopathy and zinc sulfate had the highest crop growth rate at the second planting date. Also the highest biological yield and grain yield were obtained in the second planting date (19660 and 10890kg/ha) respectively. Grain yield in these priming treatments was 18, 15 and 9% higher than control (without priming) respectively. From the results of this experiment it was concluded that seed priming treatments with tap water, urea homeopathy and zinc sulfate on the second planting date improved the growth indices and as a result of grain yield and biological yield. Also, the second planting date due to having the highest yield, the most suitable date for the cultivation of maize 260 in the region of Dehgolan was known,