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      • Open Access Article

        1 - Effect of Plant Growth Promoting Rhizobacteria (PGPR) on Phenological Traits, Grain Yield and Yield Components of Three Maize (Zea mays L.) Cultivars
        عباس Soleimani Fard H. Naseri Rad R. Naseri E. Piri
        To evaluate the effect of bio-fertilize on yield and its components in maize cultivars, an split plot experiment based on randomized complete bock design with three replications in was conducted in Payam-noor University of Ilam, Iran, in 2009-2010. Treatments were culti More
        To evaluate the effect of bio-fertilize on yield and its components in maize cultivars, an split plot experiment based on randomized complete bock design with three replications in was conducted in Payam-noor University of Ilam, Iran, in 2009-2010. Treatments were cultivar (SC604, SC704 and SC807) assigned to main plots and bio-fertilizer (non- inoculation, inoculation with Azetobacter, Azospirillum and dual inoculation ofAzotobacterand Azospirillum) to subplots. The effect of cultivar on days to maturity, plant height, dry matter, ear length, stem diameter, number of grain per ear row, 1000-grain weight, grain yield, biological yield and protein content was significant cultivar. SC 704 had the highest dry matter (259.5 g.m-2), plant height (201.1 cm), number of grain per ear row (42.8 grain), grain yield (10850 kg.m-2), and biological yield (22040 kg.m-2). The effect of plant growth promoting rhizobacteria on all traits expect harvest index was significant. Dual inoculation ofAzotobacterand Azospirillum had the longest days to ear initiation (71.2 days), days to maturity (115.4 day), number of leaves above ear (5.6 ear), dry matter (240.4 g.m-2), ear length (24.3 cm), plant height (212.4 cm), seed number of rows per ear (14.5 row), number of grains per row (44.2 grain), grain yield (10190 kg.m-2), biological yield (21320 kg.m-2) and protein content (10.7%). Interaction effect of cultivar× plant growth promoting rhizobacteria on grain yield was significant. The highest and lowest grain yield was obtained from SC 704 and application of dual inoculation ofAzotobacterand Azospirillum (12320 kg.ha-1) and lowest from SC 604 when inoculation treatments were not used 7570 kg.ha-1 respectively.  Manuscript profile
      • Open Access Article

        2 - Effects of Plant Growth Promoting Bacteria and Irrigation Levels on Physiological Traits and Yield of Flax (Linum usitatissimum L.)
        Sanaz Rajabi Khamseh Abdolrazagh Danesh-Shahraki Mohammad Rafieiolhossaini Keramatollah Saeedi Mahdi Ghobadinia
        To evaluate the effects of plant growth promoting bacteria and irrigation levels on some physiological traits and yield of flax, a split-plot experiment was conducted based on randomized complete block design with three replications at the research farm of Agricultural More
        To evaluate the effects of plant growth promoting bacteria and irrigation levels on some physiological traits and yield of flax, a split-plot experiment was conducted based on randomized complete block design with three replications at the research farm of Agricultural Faculty of Shahrekord University in 2015. The main factor was three irrigation levels (100 % of full irrigation as control, 75 and 50 % of full irrigation) and the sub-factor was seven levels of plant growth promoting bacteria (no inoculation as control and inoculation with Bacillus SP. strain1, Bacillus SP. strain2, Bacillus amyloliquefaciens, Azotobacter Chroococcum, Pseudomonas putida and Azospirillium lipoferum). The interaction effect of irrigation and bacterial inoculation on relative water content, cell membrane stability, chlorophyll a, b and carotenoid content, chlorophyll a/b ratio, water use efficiency, number of capsules per plant, 1000 grain weight and seed yield were significant but non significant on seed number per capsule. The highest amounts of measured traits in each irrigation level were related to the bacterial treatments. The highest seed yield (with 62% increase) was obtained from Bacillus sp. strain1 in treatment and 100% of full irrigation as compared to that of control. According to the results of main effect of irrigation on number of seeds per capsule, full irrigation treatment resulted in highest number of grain per capsule as compared to the other levels. Among bacterial treatments, B. Amyloliquefaciens had the highest significant number of seeds per capsule, as compared with no inoculation treatment. The effects of treatments of Bacillus SP. strain1, B. amyloliquefaciens and A. Chroococcum treatments were more pronounced as compared to other bacterial treatments traits studied under normal and stress conditions. According to the results of this research, flax seed treatment with plant growth promoting bacteria is recommended flax seed production under water deficit conditions. Manuscript profile
      • Open Access Article

        3 - Effect of different sources of biological and chemical fertilizers morphological and functional traits of Triticum aestivum L.
        hadi jahanshahi Hossein Ajam Noruzi MOHAMMAD REZA DADASHI mohammad ali Rezaii hedieh mosanaiey
        Excessive use of chemical fertilizers has degraded agricultural ecosystems. One of the sustainable agricultural programs is to reduce the use of fertilizers and increase their efficiency. In this study, an experiment was conducted to evaluate the effect of different lev More
        Excessive use of chemical fertilizers has degraded agricultural ecosystems. One of the sustainable agricultural programs is to reduce the use of fertilizers and increase their efficiency. In this study, an experiment was conducted to evaluate the effect of different levels of nitrogen and phosphorus sources on some morphological and functional properties of wheat pearl. A factorial experiment was conducted in a randomized complete block design with three replications in Nokandeh and Gorgan in Golestan province. Experimental factors included nitrogen supply sources at four levels of Azotobacter (12g/100 kg seed), Azospirillum (12g/100 kg seed), urea (200 kg/ha) and an equal combination of three sources and sources of phosphorus at the surface. There were three levels of triple superphosphate (100 kg ha-1), fertile phosphate 2 (12 g / 100 kg seed) and an equal combination of two sources with control. Morphological and functional traits such as plant height, leaf area index, spike number, grain number per spike, spike length, 1000-grain weight, biological yield, grain yield, nitrogen use efficiency, protein flowering stage, ripe, grain and chlorophyll pigments were measured. The results showed that the effect of different levels of nitrogen and phosphorous sources on the studied traits was significant. The highest plant height, leaf area index, spike number, spike length, biological yield and grain yield were obtained in equal treatment of three nitrogen sources (33% Azotobacter + 33% Azospirillum + 33% Urea) and highest Nitrogen use efficiency. Seed inoculation with Azotobacter biofertilizer was observed. Application of appropriate biofertilizers can be effective in increasing yield, improving wheat growth characteristics and reducing fertilizer. Manuscript profile
      • Open Access Article

        4 - Study of root structure and leaf of lentils (Lens culinaris Medic) under light stress and Azospirillium bacteria
        Fershteh Darabi Ali Hatami Mohammad Javad Zarea Rahim Naseri
        in order to study the effects of different light intensities and bio-priming an experiment was conducted in two lentils cultivars to introduce the best cultivar. Experiment was evaluated using factorial arrangement based on randomized complete block design with three re More
        in order to study the effects of different light intensities and bio-priming an experiment was conducted in two lentils cultivars to introduce the best cultivar. Experiment was evaluated using factorial arrangement based on randomized complete block design with three replications at the Agricultural Research Station of Ilam University during 2012-2013 cropping season. The treatments consisted of different levels of shading (no shading, 25, 50, 75 and 100% shading), Bio-priming (inoculation with Azospirillium brasilense and without inoculation) and lentil cultivars (Ziba and ILL4400), respectively. The results indicated that shading reduced leaf specific leaf, Water saturate deficit, total number of active nodes, root fresh weight, root dry weight, root volume, main root length and grain yield, but increased leaf area index, total water content, specific leaf area, respectively. But Azospirillium leaded to reduced losses caused by shading and increased plant growth and yield of lentil. Two lentil cultivars along with inoculation with Azospirillum had the more amount of grain yield. The Ziba cultivar compared to ILL4400 cultivar had the more grain yield in the higher levels of shading. interaction effect of shading× bio-priming × cultivar showed that the lack of shading (control treatment) and selection of the Ziba cultivar and inoculation with Azospirillum may achieve the acceptable grain yield, but in the conditions of intercropping and agroforestry systems that light is a limiting factor, grown Ziba cultivar along with inoculation with Azospirillum will be more successful than the ILL4400. Manuscript profile