Azza A. M. Abd El-All, Elham M. Aref and Reda M. El- Shahat( 2011). Influence Of Cyanobacteria And Azolla On Wheat Crop Cultivated In A Saline SoilN. Egypt. J. Microbiol. Vol. 30, September
Abstract: Two field experiments using Azolla pinnata and a mixture of cyanobacteria (Nostoc muscorum and Anabaena oryzae) to evaluate their role on growth and yield of wheat grown in saline soil at South El- Hossinia Research Farm Station, El- Sharkia Governorate, Agric. Res. Center, (ARC). Egypt, during two successive winter seasons 2009/2010 and 2010/2011 were designed. Influence of Azolla (fresh and dry) and cyanobacteria suspension as seed soaking ,filtrate for spray treatments and urea (75kg-N) as nitrogen fertilizer on growth, yield and yield components of wheat (Triticum aestivum cv.sakha 69) as well as their effect on some chemical properties and biological activities was studied. Results revealed that high organic matter was due to the use 25kg-N-urea +25kgN dry Azolla+17L cyanobacteria (T11) was recovered. All the tested biofertilizer treatments decreased both EC and pH compared to the control treatment. Results also exhibited a favorite influence of foliar application for both Azolla and cyanobacteria (T11), since it gave significantly higher wheat yield, yield components and N P K contents of both grains and straw compared to the other treatments and control . The treatment (T11) of 25kg-urea+25kg N- Azolla+17L cyano. which applied as foliar spray gave also the high values of soil biological activity parameters. The obtained results revealed beneficial aim to use cyanobacteria and Azolla (dry or fresh) applied as foliar +25kgN-urea to wheat plants exhibited an economical view that it can save about 50% of the mineral nitrogen amounts and could be used as a good tool to promote wheat productivity and yield quality as it provides an eco-friendly biological approach under saline soil conditions.
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