The Effect of Nitrogen Biofertilizers on Yield and Yield Components of Two Wheat Cultivars (Chamran and Shiroodi)

Document Type : Research Paper


1 Assistant Professor,Soil and Water Department, Fars Agricultural and Natural Resources Research and Education Center, AREEO,Shiraz, Iran.

2 Former student of Islamic Azad University, Fars Science and Research Branch,ِDepartment of Agronomy, and expert in agriculture affairs of Jihad-e-Agriculture Organization of Fars Province,shiraz,Iran.

3 Research instructor،Soil and Water Department, Fars Agricultural and Natural Resources Research and Education Center, AREEO,Shiraz, Iran.

4 Research instructor, Seed and Plant Improvement Department, Fars Agricultural and Natural Resources Research and Education Center, AREEO,Darab, Iran.


A field experiment was carried out in order to investigate the effect of several types of nitrogen biofertilizer on yield and yield components of two wheat cultivars (Chamran and Shiroudi) as split plots based on randomized complete block design with three replications in Darab city. Wheat cultivars (spring type Chamran and Shiroudi) were considered as main plots and biological fertilizers (General Nitragin (A1) – Nitragin special Cereal (A2) –Nitrokara (A3) –Nitroxin (A4) – Nitrogy (A5) – Nitrogen biofarm (A6) – 100% pure Nitrogen (A7= 400 kg ha-1 as urea) – without Nitrogen application (A8)) as subplots. The measured indices included plant height, number of spikes per square meter, number of seeds per spike, 1000 grain weight and yield per unit area. According to the results, there was a significant difference between wheat cultivars (P ≤0.05) and fertilizers (P ≤ 0.01).  The treatment A4 (nitroxin + 60% pure nitrogen from urea source) obtained the highest values for the measured indices. The A2, A1, A3, A6 and A5 treatments were arranged in the next step, respectively. A7 treatment, which was exclusively urea, was arranged in the next step. Generally, the biofertilizers applied in this study containing nitrogen fixation bacteria (NFB) from Azotobacter and Azospirilum genuse, if accompanied with nitrogen fertilizer like Urea, could be a suitable and safe alternative for supplying a part of nitrogen chemical Fertilizers.


Main Subjects

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