Abstract :
In order to investigate the effect of nitrogen and phosphorus fertilizer on growth and yield in rice cultivar Tarom Hashemi, an experimental design in north of Iran in 2011 cropping season. Nitrogen fertilizer at 50,100 and 150 kg/ha was main plot and phosphorus fertilizer at 4 level 0 (control), 30, 60 and 90kg/ha as sub plot. Using randomized complete block design (RCBD) with 3 replication. The results showed that tiller number, fertile tiller, total grain, 1000-grain weight and yield increased significantly with nitrogen and phosphorus fertilizer. Interesting in comparison to 50 and 100 kg/ha level application of higher N-fertilizer 150 kg/ha showed a positive respond to application of high nitrogen for Taroom Hashemi cultivar. Effect of different application of P-fertilizer was significantly on this parameter, increase application of phosphorus increase parameter above. Study of interaction effect of N and P- fertilizer was significant in fertile tiller and 1000-grain weight.
