Paper Details

Effect of seed bio-fertilization on yield and nitrogen use efficiency of a new released winter wheat cultivar: Alvand

Saber Shahim Germi, Bahram Mirshekari

DOI: https://dx.doi.org/10.12692/ijb/6.6.91-96

Int. J. Biosci. 6(6), 91-96. March, 2015. (PDF)

Abstract:

Nitrogen is required in large quantities for plants to grow, and is mainly provided in the form of synthetic chemical fertilizers. Such products pose a health hazard and microbial population problem in soil, besides making the production cost high. The aim of this experiment was evaluation of effects of bio-fertilizer and different levels of nitrogen fertilizer on yield and nitrogen use efficiency in winter wheat. A factorial experiment was conducted in Ahar, Iran. Seeds were inoculated with Nitragin bio-fertilizer under shade condition as 50 g bio-fertilizer per kilogram of seeds, and then sown immediately after inoculation. Nitrogen was applied at the rates of 0, 50, 75 and 100 kg ha-1 as urea form, which 50 % was applied basally and the rest at the booting stage. Bio-fertilization caused to 25 % increases in fertile tiller number in compare with non-inoculated one. Among studied treatments only N75 caused to 67 % increase in flag leaf area. In this experiment 1000 seed weight affected just by seed inoculation with bio-fertilizer resulted in 10 % increase in the attribute from 48.1 g to 52.7 g. Also, the yield increased 9 % in bio-fertilized seeds in comparison with non-primed check plots. The results showed that application of bio-fertilizer resulted in 4 % increase in harvest index and nitrogenous fertilizer application up to N75 caused to 8 % increase in harvest index in compare with N0. It is concluded from the results of this experiment, ANUE of wheat can be improve by bio-fertilization plus nitrogen application, as well as, nitrogen use can be economized by this way.