The effect of cyanobacteria, nostoc muscorum as biofertilizer on growth and n-yield of wheat (triticum aestivum l.)‎ under different doses of n-fertilizer

الملخص EN

In pot experiments, the potential of Nostoc muscorum as biofertilizer to promote growth of wheat with different levels of N-fertilizer (ammonium sulphate) was studied.

Biofertilization by N.

muscorum significantly increased shoot length, leaf area and spike weight of wheat either alone or in combination with N-fertilizer at 50 and 100 Kg N / ha.

Combination of biofertilization and N-fertilization, specially at 100 Kg N / ha had more effect on growth of wheat than biofertilization alone.

N-fertilization by ammonium sulphate stimulated cyanobacterial abundance in soil after 120 days from cultivation of wheat compared to biofertilization alone and N-fertilization alone.

It also stimulated nitrogenase activity In situ, specially at 100 Kg N / ha.

Inoculation of wheat with N.

muscorum increased total N-yield of shoot system compared with control (non-inoculated plants).

However, combination of biofertilization and N-fertilization at 50 and 100 Kg N / ha had more stimulation to N-yield than biofertilization alone or N-fertilization alone.

The percentage of nitrogen derived from air induced by combination of biofertilization and N-fertilization at 50 Kg N / ha (36.2 %) in shoot corresponding to 46.3 mg N / pot fixed nitrogen was more than in case of biofertilization alone or N-fertilization, The study recommends the use of N.

muscorum as biofertilizer with N-fertilizer at a level of 100 Kg N / ha for wheat production.