Rice Phosphorus Use Efficiency Affected By Different Nitrogen and Phosphorus Fertilization

In order to investigate phosphorus use efficiency at different nitrogen and phosphorus fertilization management, a field experiment was carried out in Rice Research Institute-Deputy of Mazandaran Iran (Amol) from 2014 to 2015. The experiment wasdesign and laid out in factorial in basis of RCBD with three replications. Factors were nitrogen amount (80, 120, 160 kg N ha-1 and control) and phosphorus amount (50, 70, 90, 110 kg P ha-1).Phosphorus harvest index (PHI), Agronomic P use efficiency (APUE), Physiological P use efficiency (PPUE), above ground organs nitrogen, grain nitrogen and grain yield were measured. Results showed that allof measured traits were affected significantly by different nitrogen and phosphorus fertilization. Also except phosphorus harvest index, all of traits affected by different nitrogen and phosphorus amount. Applying120 kg N ha-1 in use of 90 kg P ha-1 for the best attributes for this variety were recommended.

کلیدواژه ها:

Phenology ، Agronomic Traits ، PHI ، APUE ، PPUE