Effects of irrigation and nitrogen fertilizer on soybean (Glycine max) agronomic traits

ABSTRACT: In order to effect management of irrigation and nitrogen fertilizer on yield of soybean cultivars Chernika pilot in crop year 2011 in the Guilan province and the city Langrood with latitude 36 degrees and 54 minutes, and longitude 40 degrees and 50 minutes, and the average height of 4 m above sea level, was performed. This experiment was split plot randomized complete block design with 3 replicates were performed on earth. Each experimental unit with dimensions of 3×3 m and was planted with seven rows. The main factors include the management of no irrigated (dryland) and irrigation with Intervals 0, 6, 12 and 18 days, and nitrogen fertilizer treatments containing 0, 30, 60, 90 and 120 were considered as minor. Management of irrigation and nitrogen fertilizer and its effect on grain yield, pods and biological significant at the 5% level. The highest yield of irrigation management 12 days to the 5125.6 kg ha, respectively. Fertilizer value of the zero level to higher levels, grain yield increases 5228 kg per hectare was achieved. At the end of the season traits such as number of pods per plant, seed weight and pod length were measured.