The effect of N-fertilization management on yield and nitrogen use efficiencyin wheat cultivated under saline condition
2012
Dehghany, Farhad | Alaee Yazdi, Fatema
Large property of soil and water resources in world and Iran are affected by salinity that we have to use and manage it. Fertilizer management with regards to soil salinity level and other management practice in this situation (like different leaching fraction) Can increase fertilizer use efficiency and decrease salinity hazard. In this experiment different sources and nitrogen fertilizer managements were examined in two water salinity levels (6 and 9 dS/m) in wheat farmer fields in YAZD province. Results show that: use of high water for leaching by farmer (like our study) were a common salinity management and in this situation high split treatment of nitrogen fertilizers and use of slow release nitrogen fertilizers like SCU show better results and higher yield. Fertilizer source has less effect on yield because other limiting factors (like soil salinity) have more effect on yield. In our study because of light texture of soil and high leaching fraction in irrigation ammonium sulfate show better effect and act like slow release fertilizers.
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