Correlation Coefficient between Agronomic Traits in Soybean under different levels of Nitrogen Fertilizer and Irrigation

To evaluate the effect of irrigation and nitrogen management on yield of soybean cultivars Chernika Agricultural Experiment Station, 2011 in the city of Guilan province in latitude 36 degrees 54 minutes Langeroud, And longitude 40 degrees 50 minutes, with an average height of 4 meters above sea level, was performed. In this paper, a split plot randomized complete block design with 3 replications was conducted in the field. The main factor of rainfed dryland and irrigation intervals 0, 6, 12 and 18 days of treatment and nitrogen containing 0, 30, 60, 90 and 120 were considered as sub. Management of irrigation, nitrogen and their interactions on yield and biological pod was significant at the 5% level. The yield on the 12 day irrigation management 5125.6 kg/ha, respectively the amount of fertilizer consumption from zero to higher levels, yield increases. In other words, in the absence of fertilizer lowest yield was obtained with the 3888.1 kg/ha but with increasing amounts of fertilizer, seed yield, d ramatically increased in that the maximum yield of 90 kg N.ha -1 was 4228.1 kg/ha obtained. The highest pod yield of 12-day irrigation management with the 5312.3 kg/ha was obtained. The highest pod yields of 90 kg N.ha -1 nitrogen per hectare was and increase the amount of nitrogen from 90 to 120 kg to 4804 kg/ha resulted in decreased performance in sheath of 5438.3. The biological function of the amount of irrigation management was 12 and 18 days and increasing irrigation interval was of 6 to 12 days resulte d in a decrease in yield.