Assessment of multi-strain PGPRs biofertilization as compared to sole-strain or mineral n-fertilization on wheat plants grown in clayey soil in Egypt

Mekhemar, G.A.A.; Badawi, F. Sh. F.; Radwan, Tharwat; Hassona, B A

doi:10.4314/ejbiot.v25i1.40274

Cited by 5 publications

(10 citation statements)

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“…In general, increasing N-level from zero to 100 kg N/fed led to gradual increase in N-content accumulated in their tissues. Such increases in the N-content mainly attributed to the increases in both root and shoot dry weights as well as the increases in the percentage of N. These results are in accordance with those of Mahmoud et al (2006) and Mekhemar et al (2007) who found that increasing the application rate of N-fertilizer from zero to 120 kg N/fed increased NPK uptake of wheat plants. They added that increasing N levels had positive effect on root growth and the absorption sites which enhance absorption of nutrients.…”

Section: ) Nitrogen Accumulation In Plant Tissuessupporting

confidence: 91%

“…Generally, these results imply that wheat plants supplied with 50 kg N/fed and inoculated with mixed inoculum exerted prominent superiority for increasing seed yield, straw yield and its crude protein percent indicating to extending their promotive effect to comprise the productivity and quality of wheat yield. Many workers confirmed that inoculation of wheat with efficient N 2fixing inoculants could satisfy 50% of their nitrogen requirements (Abou El-Soud et al, 2007;Mekhemar et al, 2007 andMekhemar, 2008).…”

Section: Effect Of Inoculation With Diazotrophs On Wheat Yield and Itmentioning

confidence: 98%

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Effect of Inoculation with Diazotrophs on Wheat Productivity under Different N-Fertilizer Levels in Sandy Soils

Desoky¹,

El-Sayed²

2016

Journal of Agricultural Chemistry and Biotechnology

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Two field experiments were carried out on a sandy soil at Ismailia Agricultural Research Station located at 30º 35´ 41.901˝ N for Latitude and 32º 16´ 45.834˝ E for Longitude, Egypt, during two winter seasons of 2013/14 and 2014/15, to study the effect of inoculation with diazotrophs (Herbaspirillum sp., Azorhizobium caulinodans and Azospirillum brasilense) applied as a single treatment and\or as a mixture treatments under different levels of nitrogen, i.e., zero, 25, 50, 75 and 100 kg N/fed on the growth, yield and some yield components of wheat crop. Obtained results showed that there were significant increases in all wheat vegetative growth characters, yield and some yield components due to inoculation with any tested diaztotrophs. However, using mixture strains followed by Azospirillum brasilense surpassed other inoculated treatments or uninoculated one. Generally, all the inoculated treatments were the superior to in enhancing all wheat growth parameters, wheat yield and its components in the order of mixture> Azospirillum brasilense> Herbaspirillum sp.> Azorhizobium caulinodans> uninoculated.All wheat growth characters yield and its components increased significantly along with increasing N-fertilizer level. Due to the interaction between inoculation and N-fertilizer levels, the splendid results of wheat growth parameters, yield and its components were for wheat plants inoculated with the bacterial mixture inoculum followed by Azospirillum brasilense in combination with 50 kg N/fed, which showed significantly a positive response and gave values nearly similar to or higher than those given by the use of full N-fertilizer level (100 kg N/fed). It is of worth to note that inoculation with diazotrophs having excellent potential to be used with non-legumes not only because of their N 2 -fixing proficiency but also to their ability to acts as PGPR. The triple diazotrophs treatment may be acting as a good practice for sustaining wheat grain yield and reduce the reliance on chemical fertilizers in agriculture, to minimize the environmental pollution and to have safe healthy food.

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Section: ) Nitrogen Accumulation In Plant Tissuessupporting

confidence: 91%

Section: Effect Of Inoculation With Diazotrophs On Wheat Yield and Itmentioning

confidence: 98%

Effect of Inoculation with Diazotrophs on Wheat Productivity under Different N-Fertilizer Levels in Sandy Soils

Desoky¹,

El-Sayed²

2016

Journal of Agricultural Chemistry and Biotechnology

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“…It means that the previous treatment resulted in increases as percentages of 75, 43, 47, 86 and 101 % in plant height, stem diameter, root length, biomass fresh and dry weight over control, respectively. These results indicate that the PGPR exhibited positive effects on the growth parameters of the inoculated host plant as previously reported by (Zahir et al, 2004) and (Mekhamar et al, 2007). Means followed by the same letter (s) within the same column are not significantly different Many results are inconclusive, but encouraging enough to improve selection procedures and the production of quality inoculate for practical application.…”

Section: Resultssupporting

confidence: 83%

“…Several authers suggested that PGPR can stimulate plant growth by increasing solubilization via releasing siderophores or organic acids and facilitate the uptake of mineral nutrition such as (Chabot et al, 1996, Biswas et al, 2000 a and b, Hammad et al, 2011). These results are in agreement with the finding of several authors (Abo El-Soud et al, 2007) and (Mekhamar et al, 2007) who explained that improving effects arising from microbial inoculation are due to producing growth promoter substances such as auxins, gibberellins and cytokinins. Table (4) indicates that the inoculation with (PGPR) treatments with half dose of mineral nutrition significantly exceeded leaf total chlorophyll concentration to maximum values in the two seasons.…”

Section: Chemical Analysissupporting

confidence: 93%

Response of Azadirachta indica (Neem) seedlings to biofertilizer compared to mineral nutrition

2015

Annals of Agricultural Science, Moshtohor

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Growth of Azadirachta indica (Neem) transplants was stimulated by inoculation with Plant Growth Promoting Rhizobacteria (PGPR). Results showed that significant increases in the vegetative growth, biomass and chemical constituents per seedling were observed in the seedlings inoculated with mixture of Azospirillum brasilense, Azotobacter chrococcum and Bacillus polymixa (PGPR), and received half dose from mineral nutrients (NPK). This treatment gave higher parameters, the percentages of increases as a result of using PGPR with half dose from mineral nutrition as compared to full dose, were 25, 22, 44, 21and 40% for plant height, stem diameter, root length, fresh and dry weight per seedling over the seedling which received full doses of mineral nutrition. It can be also concluded that the previous treatment (PGPR and half mineral fertilizer) exceeded the growth parameters by 75, 43, 47, 86 and 101% respectively over control. Also, the above treatment gave the highest values of NPK up take, total carbohydrate and chlorophyll content. These results suggest that the growth promoting substances provided by PGPR may enhance the growth of Azadirachta indica seedlings and consequently produce healthy seedling in short time.

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“…The bio-organic compound which represented the major material in production of seedlings as well as production of bio-fertilizer Abdel- Wahab and Ahmed, (2003). The mechanism of the bacterization resulting in yield increase with decrease or no N concentration may be attributed to enhance N2-fixation or increase N assimilation by plant Mekhamar et al,( 2007).…”

Section: -2-2-nitrogen Percentagementioning

confidence: 99%

Impact of Bio-Composite on Growth and Chemical Composition of Three Pine Species Seedlings as Comparing With Some Growing Media

Hammad¹

2012

Journal of Plant Production

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The aim of this study was to investigate the effect of different growing media (sand, clay, mixture of clay and sand at the ratio of 1:1(V/V) and Bio-composite) on the growth and chemical composition of Pinus halepensis, Pinus brutia and Pinus pinea seedlings in the nursery. The recorded data indicated that the most effective growing medium was Bio-composite, which gave highest values for all recorded growth characteristics, particularly Pinus halepensis which reached to (63.7cm, 16.3g and 6.3g in plant height, Fresh weight and Dry weight respectively), whereas the least effective media were sand and clay (when each was used alone). The selection of a growing medium is one of the important decisions in most containers culture of nursery plants. The physical, chemical and biological characteristics of a growing medium affect not only seedling growth but also other aspects of nursery operations.

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Assessment of multi-strain PGPRs biofertilization as compared to sole-strain or mineral n-fertilization on wheat plants grown in clayey soil in Egypt

Cited by 5 publications

References 0 publications

Effect of Inoculation with Diazotrophs on Wheat Productivity under Different N-Fertilizer Levels in Sandy Soils

Effect of Inoculation with Diazotrophs on Wheat Productivity under Different N-Fertilizer Levels in Sandy Soils

Response of Azadirachta indica (Neem) seedlings to biofertilizer compared to mineral nutrition

Impact of Bio-Composite on Growth and Chemical Composition of Three Pine Species Seedlings as Comparing With Some Growing Media

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