Characterization ofAzotobacter spp. and effect of Azotobacter and Azospirillum as inoculant on the yield and N-uptake of wheat crop

N., S.; Gaur, Anshu

doi:10.1007/bf02197592

Cited by 25 publications

(8 citation statements)

References 7 publications

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“…Similar increases in grain yield of wheat through Azospirillum spp. inoculation have been reported in previous studies (Rai and Gaur, 1988;Rodriguez et al, 1996). Mean crude protein concentrations for control, Bacillus sp.…”

Section: Discussionsupporting

confidence: 54%

“…Significant effects of A. brasilense Sp246 inoculation on grain yields of wheat and barley were obtained at 0 and 40 kg N ha ±1 fertilization, but not with 80 kg N ha 1 fertilization. In previous inoculation experiments with wheat using Azospirillum spp., the highest yield increases were obtained at intermediate levels of N fertilizer application (Kapulnik et al, 1983;Rai and Gaur, 1988). The possible reason for lower yield responses to inoculation at high levels of N might be associated with a lower nitrogenase activity of Azospirillum.…”

Section: Discussionmentioning

confidence: 89%

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Yield response of wheat and barley to inoculation of plant growth promoting rhizobacteria at various levels of nitrogen fertilization

Öztürk

Çağlar

Şahın

2003

Z. Pflanzenernähr. Bodenk.

122

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SummaryThe yield response of a wheat (Kirik) and a barley (Tokak 157/37) cultivar to inoculation with Azospirillum brasilense Sp246 and Bacillus sp. OSU-142 was studied in relation to three levels of N fertilization (0, 40, and 80 kg ha ±1 ) under field conditions in Erzurum, Turkey, in 1999 and 2000. Seed inoculation with A. brasilense Sp246 significantly affected yield and yield components, both in wheat and barley. On average of years and N doses, inoculation with A. brasilense Sp246 increased spike number per m 2 , grain number per spike, grain yield, and crude protein content by 7.2, 5.9, 14.7, and 4.1 % in wheat and by 6.6, 8.1, 17.5, and 5.1 % in barley, respectively, as compared to control. Inoculation with Bacillus sp. OSU-142 significantly increased kernel number per spike in wheat, but no significant effect was determined in the other characteristics. Grain yields and yield components were also higher at all levels of nitrogen fertilizer in the inoculated plots as compared to the control. However, these increases diminished at high fertilizer levels. These results suggest that application of the growth promoting bacteria A. brasilense Sp246 may have the potential to be used as a biofertilizer for spring wheat and barley cultivation in organic and low-N input agriculture.

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Section: Discussionsupporting

confidence: 54%

Section: Discussionmentioning

confidence: 89%

Yield response of wheat and barley to inoculation of plant growth promoting rhizobacteria at various levels of nitrogen fertilization

Öztürk

Çağlar

Şahın

2003

Z. Pflanzenernähr. Bodenk.

122

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“…The potential use of Azospirillum as a biofertilizer has been reported by many authors (Rai and Gaur, 1988;Zimmer et al, 1988). Our results suggest that Azospirillum inoculation may affect plant growth not only by fixing nitrogen and excretion of phytohormones such as auxins and gibberellins, but also by the production of vitamins that stimulate plant development.…”

Section: Discussionsupporting

confidence: 49%

Production of vitamins by Azospirillum brasilense in chemically-defined media

et al. 1993

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The production of vitamins by Azospirillum brasilense was studied in chemically-defined media amended with malate, gluconate and fructose. The liberation of vitamins was significantly affected by the presence of different carbon sources and the age of the culture. Thiamine, niacin and pantothenic acid were produced in large amounts. Thiamine and riboflavin were produced only in culture containing malate or fructose. Biotin was not detected in the supernatants of the culture media.

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“…or Klebsiella sp. increased number of root hairs, tillering ratio, dry matter concentration, N-uptake or yields of wheat (Haahtela et al, 1988;Ishac et al, 1986;Rai and Gaur, 1988).…”

Section: Introductionmentioning

confidence: 97%

Effect of Inoculation with Non-indigenous and Indigenous Rhizobacteria of Erzurum (Turkey) Origin on Growth and Yield of Spring Barley

et al. 2005

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Two experiments were performed to examine the effects of inoculation of barley cv. Tokak 157/37 with indigenous and non-indigenous bacterial strains. A greenhouse experiment was carried out with 75 strains isolated from Erzurum Plain and Pasinler Plain soils of Turkey, and the 6 non-indigenous strains. The 41 strains had significant positive effects on tiller number per plant, 8 strains on plant height, one strain on dry matter yield, and 24 strains on plant protein concentration. In the second experiment,

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Characterization ofAzotobacter spp. and effect of Azotobacter and Azospirillum as inoculant on the yield and N-uptake of wheat crop

Cited by 25 publications

References 7 publications

Yield response of wheat and barley to inoculation of plant growth promoting rhizobacteria at various levels of nitrogen fertilization

Yield response of wheat and barley to inoculation of plant growth promoting rhizobacteria at various levels of nitrogen fertilization

Production of vitamins by Azospirillum brasilense in chemically-defined media

Effect of Inoculation with Non-indigenous and Indigenous Rhizobacteria of Erzurum (Turkey) Origin on Growth and Yield of Spring Barley

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